{"id":65517,"date":"2024-04-20T21:24:09","date_gmt":"2024-04-20T14:24:09","guid":{"rendered":"https:\/\/itviec.com\/blog\/?p=65517"},"modified":"2025-10-11T23:34:19","modified_gmt":"2025-10-11T16:34:19","slug":"oracle-sql","status":"publish","type":"post","link":"https:\/\/itviec.com\/blog\/oracle-sql\/","title":{"rendered":"Oracle SQL l\u00e0 g\u00ec? 11 l\u1ec7nh Oracle SQL th\u00f4ng d\u1ee5ng"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung b\u00e0i vi\u1ebft<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/#Oracle_SQL_la_gi\" >Oracle SQL l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/#Cac_thanh_phan_chinh_cua_Oracle_SQL\" >C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a Oracle SQL&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/#11_lenh_Oracle_SQL_thong_dung\" >11 l\u1ec7nh Oracle SQL th\u00f4ng d\u1ee5ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/#Oracle_SQL_Developer_la_gi_Gom_nhung_tinh_nang_chinh_nao\" >Oracle SQL Developer l\u00e0 g\u00ec? G\u1ed3m nh\u1eefng t\u00ednh n\u0103ng ch\u00ednh n\u00e0o?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/#Huong_dan_su_dung_Oracle_SQL_Developer_chi_tiet\" >H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Oracle SQL Developer chi ti\u1ebft<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/#Cac_tinh_nang_bo_sung_cua_Oracle_SQL_Developer\" >C\u00e1c t\u00ednh n\u0103ng b\u1ed5 sung c\u1ee7a Oracle SQL Developer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/#Cac_cau_hoi_thuong_gap_ve_Oracle_SQL\" >C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Oracle SQL<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/#Tong_ket\" >T\u1ed5ng k\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n\n<p><em><strong>Oracle SQL v\u00e0 Oracle SQL Developer kh\u00f4ng ch\u1ec9 l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 quan tr\u1ecdng m\u00e0 c\u00f2n l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a n\u1ec1n t\u1ea3ng d\u1eef li\u1ec7u l\u1edbn Oracle Database. H\u00e3y c\u00f9ng ITviec kh\u00e1m ph\u00e1 t\u1ea5t t\u1ea7n t\u1eadt v\u1ec1 Oracle SQL ngay trong b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 ph\u00e1t tri\u1ec3n s\u1ef1 nghi\u1ec7p c\u1ee7a ch\u00ednh m\u00ecnh trong ng\u00e0nh c\u00f4ng ngh\u1ec7 th\u00f4ng tin!<\/strong><\/em><\/p>\n\n\n\n<p><i><span style=\"font-weight: 400;\">\u0110\u1ecdc b\u00e0i vi\u1ebft \u0111\u1ec3 hi\u1ec3u r\u00f5:<\/span><\/i><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">\u0110\u1ecbnh ngh\u0129a Oracle SQL<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a Oracle SQL<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">11 l\u1ec7nh Oracle SQL th\u00f4ng d\u1ee5ng<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">\u0110\u1ecbnh ngh\u0129a v\u00e0 nh\u1eefng t\u00ednh n\u0103ng c\u1ee7a Oracle SQL Developer<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Oracle SQL Developer<\/span><\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Xem th\u00eam: <a href=\"https:\/\/itviec.com\/viec-lam-it\/sql?utm_medium=anchor_text_high&amp;utm_source=blog&amp;utm_campaign=viec_lam_sql&amp;utm_content=oracle_sql\" target=\"_blank\" rel=\"noreferrer noopener\">Vi\u1ec7c l\u00e0m SQL<\/a> tr\u00ean ITviec<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-oracle-sql-la-gi\"><span class=\"ez-toc-section\" id=\"Oracle_SQL_la_gi\"><\/span><b>Oracle SQL l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-oracle-la-gi\"><strong>Oracle l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle l\u00e0 m\u1ed9t trong nh\u1eefng nh\u00e0 cung c\u1ea5p gi\u1ea3i ph\u00e1p v\u00e0 d\u1ecbch v\u1ee5 h\u00e0ng \u0111\u1ea7u th\u1ebf gi\u1edbi trong l\u0129nh v\u1ef1c c\u00f4ng ngh\u1ec7 th\u00f4ng tin, v\u1edbi lo\u1ea1t s\u1ea3n ph\u1ea9m \u0111a d\u1ea1ng ph\u1ee5c v\u1ee5 ch\u1ee7 y\u1ebfu nhu c\u1ea7u qu\u1ea3n tr\u1ecb doanh nghi\u1ec7p.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Trong s\u1ed1 \u0111\u00f3, s\u1ea3n ph\u1ea9m n\u1ed5i ti\u1ebfng nh\u1ea5t c\u1ee7a th\u01b0\u01a1ng hi\u1ec7u l\u00e0 Oracle Database, hay OracleDB, l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 (RDBMS).<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle Database \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f4ng ngh\u1ec7 th\u00f4ng tin doanh nghi\u1ec7p, h\u1ed7 tr\u1ee3 c\u00e1c ho\u1ea1t \u0111\u1ed9ng nh\u01b0 x\u1eed l\u00fd giao d\u1ecbch, qu\u1ea3n l\u00fd th\u00f4ng tin kinh doanh v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u.<\/span><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/itviec.com\/blog\/oracle-la-gi\/\" target=\"_blank\" rel=\"noopener\"><strong>Oracle l\u00e0 g\u00ec? 5 gi\u1ea3i ph\u00e1p ph\u1ea7n m\u1ec1m Oracle m\u00e0 developer c\u1ea7n bi\u1ebft<\/strong><\/a><\/em><\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-sql-la-gi\"><strong>SQL l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">SQL (Structured Query Language &#8211; Ng\u00f4n ng\u1eef truy v\u1ea5n c\u00f3 c\u1ea5u tr\u00fac) l\u00e0 m\u1ed9t ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u01b0u tr\u1eef v\u00e0 x\u1eed l\u00fd th\u00f4ng tin trong c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 th\u01b0\u1eddng l\u01b0u tr\u1eef th\u00f4ng tin d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng, v\u1edbi c\u00e1c h\u00e0ng v\u00e0 c\u1ed9t \u0111\u1ea1i di\u1ec7n cho c\u00e1c thu\u1ed9c t\u00ednh d\u1eef li\u1ec7u kh\u00e1c nhau v\u00e0 c\u00e1c m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c gi\u00e1 tr\u1ecb d\u1eef li\u1ec7u. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c c\u00e2u l\u1ec7nh SQL, l\u1eadp tr\u00ecnh vi\u00ean c\u00f3 th\u1ec3 l\u01b0u tr\u1eef, c\u1eadp nh\u1eadt, x\u00f3a, t\u00ecm ki\u1ebfm v\u00e0 truy xu\u1ea5t th\u00f4ng tin t\u1eeb c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Developer c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng SQL \u0111\u1ec3 duy tr\u00ec v\u00e0 t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-oracle-sql-la-gi-0\"><strong>Oracle SQL l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng l\u01b0u tr\u1eef v\u00e0 qu\u1ea3n l\u00fd d\u1eef li\u1ec7u theo kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Ng\u01b0\u1eddi d\u00f9ng t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u Oracle th\u00f4ng qua c\u00e1c l\u1ec7nh Ng\u00f4n ng\u1eef truy v\u1ea5n c\u00f3 c\u1ea5u tr\u00fac (SQL) \u0111\u1ec3 t\u1ea1o, s\u1eeda \u0111\u1ed5i v\u00e0 x\u00f3a b\u1ea3ng, c\u0169ng nh\u01b0 truy xu\u1ea5t d\u1eef li\u1ec7u. Oracle SQL cung c\u1ea5p m\u1ed9t b\u1ed9 c\u00f4ng c\u1ee5 to\u00e0n di\u1ec7n \u0111\u1ec3 qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u, bao g\u1ed3m c\u00e1c t\u00ednh n\u0103ng gi\u00fap qu\u1ea3n l\u00fd ng\u01b0\u1eddi d\u00f9ng, g\u00e1n quy\u1ec1n h\u1ea1n v\u00e0 t\u1ea1o sao l\u01b0u c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">H\u1ec7 th\u1ed1ng c\u0169ng bao g\u1ed3m c\u00e1c t\u00ednh n\u0103ng ti\u00ean ti\u1ebfn nh\u01b0 ph\u00e2n v\u00f9ng, nh\u00f3m v\u00e0 n\u00e9n \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a l\u01b0u tr\u1eef v\u00e0 truy xu\u1ea5t d\u1eef li\u1ec7u, c\u0169ng nh\u01b0 c\u00e1c c\u00f4ng c\u1ee5 \u0111\u1ec3 t\u1ea1o b\u00e1o c\u00e1o, bi\u1ec3u \u0111\u1ed3 v\u00e0 \u0111\u1ed3 th\u1ecb t\u00f9y ch\u1ec9nh.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-cac-thanh-ph\u1ea7n-chinh-c\u1ee7a-oracle-sql-nbsp\"><span class=\"ez-toc-section\" id=\"Cac_thanh_phan_chinh_cua_Oracle_SQL\"><\/span><strong>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a Oracle SQL&nbsp;<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">Nh\u1eefng y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n trong Oracle SQL l\u00e0 nh\u1eefng kh\u1ed1i h\u1ed9p c\u1ea5u th\u00e0nh n\u00ean n\u1ec1n t\u1ea3ng c\u1ee7a c\u00e1c c\u00e2u l\u1ec7nh SQL. Do \u0111\u00f3, tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng c\u00e1c c\u00e2u l\u1ec7nh SQL trong c\u01a1 s\u1edf d\u1eef li\u1ec7u Oracle, l\u1eadp tr\u00ecnh vi\u00ean n\u00ean l\u00e0m quen v\u1edbi c\u00e1c kh\u00e1i ni\u1ec7m sau \u0111\u00e2y:<\/span><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\"><strong>Ki\u1ec3u d\u1eef li\u1ec7u (Data Types):<\/strong> \u0110\u1ecbnh ngh\u0129a lo\u1ea1i d\u1eef li\u1ec7u c\u1ee7a m\u1ed7i c\u1ed9t trong b\u1ea3ng, bao g\u1ed3m s\u1ed1 nguy\u00ean, s\u1ed1 th\u1ef1c, k\u00fd t\u1ef1, ng\u00e0y th\u00e1ng, v\u00e0 c\u00e1c lo\u1ea1i d\u1eef li\u1ec7u \u0111\u1eb7c bi\u1ec7t kh\u00e1c.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\"><strong>Quy t\u1eafc so s\u00e1nh ki\u1ec3u d\u1eef li\u1ec7u (Data Type Comparison Rules)<\/strong>: Quy \u0111\u1ecbnh c\u00e1ch so s\u00e1nh c\u00e1c ki\u1ec3u d\u1eef li\u1ec7u kh\u00e1c nhau trong c\u00e2u l\u1ec7nh SQL.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\"><strong>H\u1eb1ng s\u1ed1 (Literals)<\/strong>: C\u00e1c gi\u00e1 tr\u1ecb c\u1ed1 \u0111\u1ecbnh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c c\u00e2u l\u1ec7nh SQL, nh\u01b0 chu\u1ed7i k\u00fd t\u1ef1, s\u1ed1 nguy\u00ean, s\u1ed1 th\u1ef1c, ng\u00e0y th\u00e1ng,&#8230;<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\"><strong>M\u00f4 h\u00ecnh \u0111\u1ecbnh d\u1ea1ng (Format Models)<\/strong>: X\u00e1c \u0111\u1ecbnh c\u00e1ch hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u khi truy v\u1ea5n t\u1eeb c\u01a1 s\u1edf d\u1eef li\u1ec7u, v\u00ed d\u1ee5 nh\u01b0 \u0111\u1ecbnh d\u1ea1ng ng\u00e0y th\u00e1ng ho\u1eb7c s\u1ed1 ti\u1ec1n.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\"><strong>Gi\u00e1 tr\u1ecb r\u1ed7ng (Nulls)<\/strong>: \u0110\u1ea1i di\u1ec7n cho gi\u00e1 tr\u1ecb kh\u00f4ng t\u1ed3n t\u1ea1i ho\u1eb7c kh\u00f4ng x\u00e1c \u0111\u1ecbnh trong c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\"><strong>Ch\u00fa th\u00edch (Comments)<\/strong>: Ghi ch\u00fa \u0111\u1ec3 gi\u1ea3i th\u00edch \u00fd ngh\u0129a c\u1ee7a c\u00e1c ph\u1ea7n trong c\u00e2u l\u1ec7nh SQL.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\"><strong>\u0110\u1ed1i t\u01b0\u1ee3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u (Database Objects)<\/strong>: Bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n nh\u01b0 b\u1ea3ng, ch\u1ec9 m\u1ee5c, kh\u00f3a ngo\u1ea1i, th\u1ee7 t\u1ee5c l\u01b0u tr\u1eef, h\u00e0m, trigger,&#8230;<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\"><strong>T\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 b\u1ed9 l\u1ecdc (Database Object Names and Qualifiers)<\/strong>: C\u00e1ch \u0111\u1ecbnh danh v\u00e0 ph\u00e2n lo\u1ea1i c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong c\u01a1 s\u1edf d\u1eef li\u1ec7u, bao g\u1ed3m c\u1ea3 t\u00ean b\u1ea3ng, t\u00ean c\u1ed9t, t\u00ean h\u00e0m,&#8230;<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\"><strong>C\u00fa ph\u00e1p cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng schema v\u00e0 c\u00e1c ph\u1ea7n trong c\u00e2u l\u1ec7nh SQL:<\/strong> Quy \u0111\u1ecbnh c\u00e1ch s\u1eed d\u1ee5ng c\u00fa ph\u00e1p \u0111\u1ec3 tham chi\u1ebfu v\u00e0 thao t\u00e1c tr\u00ean c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong c\u01a1 s\u1edf d\u1eef li\u1ec7u, \u0111\u1ed3ng th\u1eddi ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng gi\u1eefa c\u00e1c ph\u1ea7n c\u1ee7a c\u00e2u l\u1ec7nh SQL.<\/span><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-11-l\u1ec7nh-oracle-sql-thong-d\u1ee5ng\"><span class=\"ez-toc-section\" id=\"11_lenh_Oracle_SQL_thong_dung\"><\/span><b> 11 l\u1ec7nh Oracle SQL th\u00f4ng d\u1ee5ng<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u00fa ph\u00e1p c\u01a1 b\u1ea3n c\u1ee7a m\u1ed9t c\u00e2u l\u1ec7nh Oracle SQL bao g\u1ed3m c\u00e1c t\u1eeb kh\u00f3a, c\u00e1c \u0111\u1ecbnh danh, c\u00e1c h\u1eb1ng s\u1ed1 v\u00e0 c\u00e1c to\u00e1n t\u1eed.<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>T\u1eeb kh\u00f3a<\/strong><span style=\"font-weight: 400;\"> l\u00e0 c\u00e1c t\u1eeb \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc c\u00f3 \u00fd ngh\u0129a \u0111\u1eb7c bi\u1ec7t trong Oracle SQL, nh\u01b0 SELECT, INSERT, ho\u1eb7c UPDATE.<\/span><\/li>\n\n\n\n<li><strong>\u0110\u1ecbnh danh<\/strong><span style=\"font-weight: 400;\"> l\u00e0 c\u00e1c t\u00ean do ng\u01b0\u1eddi d\u00f9ng t\u1ef1 x\u00e1c \u0111\u1ecbnh cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u nh\u01b0 b\u1ea3ng v\u00e0 c\u1ed9t.<\/span><\/li>\n\n\n\n<li><strong>H\u1eb1ng s\u1ed1<\/strong><span style=\"font-weight: 400;\"> \u0111\u1ea1i di\u1ec7n cho c\u00e1c gi\u00e1 tr\u1ecb h\u1eb1ng s\u1ed1.<\/span><\/li>\n\n\n\n<li><strong>To\u00e1n t\u1eed<\/strong><span style=\"font-weight: 400;\"> l\u00e0 c\u00e1c k\u00fd hi\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p to\u00e1n tr\u00ean d\u1eef li\u1ec7u.<\/span><\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">3 ph\u00e2n lo\u1ea1i v\u00e0 11 l\u1ec7nh Oracle SQL th\u00f4ng d\u1ee5ng m\u00e0 l\u1eadp tr\u00ecnh vi\u00ean c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng ngay bao g\u1ed3m:<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-data-definition-language-ddl-ngon-ng\u1eef-d\u1ecbnh-nghia-d\u1eef-li\u1ec7u\"><b>Data Definition Language (DDL) &#8211; Ng\u00f4n ng\u1eef \u0111\u1ecbnh ngh\u0129a d\u1eef li\u1ec7u<\/b><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-l\u1ec7nh-create-table-ddl\"><span style=\"font-weight: 400;\"><strong>L\u1ec7nh<\/strong> <\/span><b>CREATE TABLE (DDL)<\/b><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u00e2u l\u1ec7nh <\/span><b>CREATE TABLE<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o m\u1ed9t b\u1ea3ng m\u1edbi trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. C\u00fa ph\u00e1p \u0111\u1ec3 t\u1ea1o b\u1ea3ng nh\u01b0 sau:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">CREATE<\/span> <span style=\"font-weight: 400;\">TABLE table_name (\n<\/span> <span style=\"font-weight: 400;\">\u00a0 \u00a0 column1_name datatype constraint,\n<\/span> <span style=\"font-weight: 400;\">\u00a0 \u00a0 column2_name datatype constraint,\n<\/span> <span style=\"font-weight: 400;\">  \u00a0 ...<\/span>\n<span style=\"font-weight: 400;\">);<\/span><\/code><\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 v\u00ed d\u1ee5 v\u1ec1 c\u00e1ch t\u1ea1o m\u1ed9t b\u1ea3ng nh\u00e2n vi\u00ean \u0111\u01a1n gi\u1ea3n:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">CREATE<\/span> <span style=\"font-weight: 400;\">TABLE<\/span><span style=\"font-weight: 400;\"> employees (\n<\/span> <span style=\"font-weight: 400;\">&nbsp; &nbsp; <\/span><span style=\"font-weight: 400;\">id<\/span> <span style=\"font-weight: 400;\">NUMBER<\/span><span style=\"font-weight: 400;\"> PRIMARY <\/span><span style=\"font-weight: 400;\">KEY<\/span><span style=\"font-weight: 400;\">,\n<\/span> <span style=\"font-weight: 400;\">&nbsp; &nbsp; first_name VARCHAR2(<\/span><span style=\"font-weight: 400;\">50<\/span><span style=\"font-weight: 400;\">),\n<\/span> <span style=\"font-weight: 400;\">&nbsp; &nbsp; last_name VARCHAR2(<\/span><span style=\"font-weight: 400;\">50<\/span><span style=\"font-weight: 400;\">),\n<\/span> <span style=\"font-weight: 400;\">&nbsp; &nbsp; salary <\/span><span style=\"font-weight: 400;\">NUMBER<\/span> \n<span style=\"font-weight: 400;\">);<\/span><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-l\u1ec7nh-alter-table-ddl\"><strong>L\u1ec7nh <\/strong><b>ALTER TABLE (DDL)<\/b><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u00e2u l\u1ec7nh <\/span><b>ALTER TABLE<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1eeda \u0111\u1ed5i m\u1ed9t b\u1ea3ng hi\u1ec7n c\u00f3, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00eam, s\u1eeda ho\u1eb7c x\u00f3a c\u00e1c c\u1ed9t. C\u00fa ph\u00e1p \u0111\u1ec3 thay \u0111\u1ed5i b\u1ea3ng nh\u01b0 sau:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">ALTER<\/span> <span style=\"font-weight: 400;\">TABLE<\/span><span style=\"font-weight: 400;\"> table_name\n<\/span> <span style=\"font-weight: 400;\">&nbsp; &nbsp; <\/span><span style=\"font-weight: 400;\">action<\/span><span style=\"font-weight: 400;\"> column_name datatype <\/span><span style=\"font-weight: 400;\">constraint<\/span><span style=\"font-weight: 400;\">;<\/span><\/code><\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: \u0111\u1ec3 th\u00eam m\u1ed9t c\u1ed9t m\u1edbi c\u00f3 t\u00ean l\u00e0 \u2018b\u1ed9 ph\u1eadn\u2019 v\u00e0o b\u1ea3ng nh\u00e2n vi\u00ean:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">ALTER<\/span> <span style=\"font-weight: 400;\">TABLE<\/span><span style=\"font-weight: 400;\"> employees\n<\/span> <span style=\"font-weight: 400;\">&nbsp; &nbsp; <\/span><span style=\"font-weight: 400;\">ADD<\/span><span style=\"font-weight: 400;\"> department VARCHAR2(<\/span><span style=\"font-weight: 400;\">50<\/span><span style=\"font-weight: 400;\">);<\/span><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-l\u1ec7nh-drop-table-ddl\"><strong>L\u1ec7nh <\/strong><b>DROP TABLE (DDL)<\/b><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u00e2u l\u1ec7nh <\/span><b>DROP TABLE<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00f3a m\u1ed9t b\u1ea3ng hi\u1ec7n c\u00f3 v\u00e0 t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u c\u1ee7a b\u1ea3ng \u0111\u00f3. C\u00fa ph\u00e1p x\u00f3a b\u1ea3ng nh\u01b0 sau:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">DROP<\/span> <span style=\"font-weight: 400;\">TABLE<\/span><span style=\"font-weight: 400;\"> table_name;<\/span><\/code><\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: \u0111\u1ec3 x\u00f3a b\u1ea3ng nh\u00e2n vi\u00ean:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">DROP<\/span> <span style=\"font-weight: 400;\">TABLE<\/span><span style=\"font-weight: 400;\"> employees;<\/span><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-data-manipulation-language-dml-ngon-ng\u1eef-thao-tac-d\u1eef-li\u1ec7u\"><b>Data Manipulation Language (DML) &#8211; Ng\u00f4n ng\u1eef thao t\u00e1c d\u1eef li\u1ec7u<\/b><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-l\u1ec7nh-insert-into-dml\"><strong>L\u1ec7nh <\/strong><b>INSERT INTO (DML)<\/b><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u00e2u l\u1ec7nh <\/span><b>INSERT INTO<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u00e8n th\u00eam c\u00e1c h\u00e0ng trong m\u1ed9t b\u1ea3ng. C\u00fa ph\u00e1p ch\u00e8n d\u1eef li\u1ec7u nh\u01b0 sau:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">INSERT<\/span><span style=\"font-weight: 400;\"> INTO table_name (column1, column2, ...)\n<\/span><span style=\"font-weight: 400;\">VALUES<\/span><span style=\"font-weight: 400;\"> (value1, value2, ...);<\/span><\/code><\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5, \u0111\u1ec3 ch\u00e8n m\u1ed9t th\u00f4ng tin nh\u00e2n vi\u00ean m\u1edbi v\u00e0o b\u1ea3ng nh\u00e2n vi\u00ean:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">INSERT<\/span> <span style=\"font-weight: 400;\">INTO<\/span><span style=\"font-weight: 400;\"> employees (<\/span><span style=\"font-weight: 400;\">id<\/span><span style=\"font-weight: 400;\">, first_name, last_name, salary, department)<\/span>\n<span style=\"font-weight: 400;\">VALUES<\/span><span style=\"font-weight: 400;\"> (<\/span><span style=\"font-weight: 400;\">1<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">'Anh'<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">'Nguyen'<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">50000000<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">'IT'<\/span><span style=\"font-weight: 400;\">);<\/span><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-l\u1ec7nh-update-dml\"><strong>L\u1ec7nh <\/strong><b>UPDATE (DML)<\/b><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u00e2u l\u1ec7nh <\/span><b>UPDATE<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 c\u1eadp nh\u1eadt c\u00e1c h\u00e0ng hi\u1ec7n c\u00f3 trong b\u1ea3ng. C\u00e2u l\u1ec7nh \u0111\u1ec3 c\u1eadp nh\u1eadt d\u1eef li\u1ec7u nh\u01b0 sau:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">UPDATE table_name\n<\/span><span style=\"font-weight: 400;\">SET<\/span><span style=\"font-weight: 400;\"> column1 <\/span><span style=\"font-weight: 400;\">= value1, column2 = value2, ...\n<\/span><span style=\"font-weight: 400;\">WHERE <\/span><span style=\"font-weight: 400;\">condition<\/span><span style=\"font-weight: 400;\">;<\/span><\/code><\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: \u0111\u1ec3 c\u1eadp nh\u1eadt m\u1ee9c l\u01b0\u01a1ng c\u1ee7a nh\u00e2n vi\u00ean c\u00f3 id b\u1eb1ng 1:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">UPDATE<\/span><span style=\"font-weight: 400;\"> employees\n<\/span><span style=\"font-weight: 400;\">SET<\/span><span style=\"font-weight: 400;\"> salary = <\/span><span style=\"font-weight: 400;\">55000\n<\/span><span style=\"font-weight: 400;\">WHERE<\/span> <span style=\"font-weight: 400;\">id<\/span><span style=\"font-weight: 400;\"> = <\/span><span style=\"font-weight: 400;\">1<\/span><span style=\"font-weight: 400;\">;<\/span><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-l\u1ec7nh-delete-dml\"><strong>L\u1ec7nh <\/strong><b>DELETE (DML)<\/b><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u00e2u l\u1ec7nh <\/span><b>DELETE<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00f3a c\u00e1c h\u00e0ng kh\u1ecfi b\u1ea3ng. C\u00fa ph\u00e1p x\u00f3a d\u1eef li\u1ec7u nh\u01b0 sau:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">DELETE<\/span> <span style=\"font-weight: 400;\">FROM<\/span><span style=\"font-weight: 400;\"> table_name<\/span>\n<span style=\"font-weight: 400;\">WHERE<\/span><span style=\"font-weight: 400;\"> condition;<\/span><\/code><\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: \u0111\u1ec3 x\u00f3a th\u00f4ng tin m\u1ed9t nh\u00e2n vi\u00ean c\u00f3 id b\u1eb1ng 1:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">DELETE<\/span> <span style=\"font-weight: 400;\">FROM<\/span><span style=\"font-weight: 400;\"> employees\n<\/span><span style=\"font-weight: 400;\">WHERE<\/span> <span style=\"font-weight: 400;\">id<\/span><span style=\"font-weight: 400;\"> = <\/span><span style=\"font-weight: 400;\">1<\/span><span style=\"font-weight: 400;\">;<\/span><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-data-query-language-dql-ngon-ng\u1eef-truy-v\u1ea5n-d\u1eef-li\u1ec7u\"><b>Data Query Language (DQL) &#8211; Ng\u00f4n ng\u1eef truy v\u1ea5n d\u1eef li\u1ec7u<\/b><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-l\u1ec7nh-select-nbsp\"><span style=\"font-weight: 400;\"><strong>L\u1ec7nh <\/strong><\/span><b>SELECT&nbsp;<\/b><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">C\u00e2u l\u1ec7nh <\/span><b>SELECT<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u1ea5y d\u1eef li\u1ec7u t\u1eeb m\u1ed9t ho\u1eb7c nhi\u1ec1u b\u1ea3ng. C\u00fa ph\u00e1p c\u01a1 b\u1ea3n \u0111\u1ec3 ch\u1ecdn d\u1eef li\u1ec7u nh\u01b0 sau:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">SELECT<\/span><span style=\"font-weight: 400;\"> column1, column2, ...<\/span>\n<span style=\"font-weight: 400;\">FROM<\/span><span style=\"font-weight: 400;\"> table_name<\/span>\n<span style=\"font-weight: 400;\">WHERE<\/span><span style=\"font-weight: 400;\"> condition;<\/span><\/code><\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: \u0111\u1ec3 l\u1ea5y t\u1ea5t c\u1ea3 c\u00e1c c\u1ed9t t\u1eeb b\u1ea3ng nh\u00e2n vi\u00ean:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">SELECT<\/span><span style=\"font-weight: 400;\"> * <\/span><span style=\"font-weight: 400;\">FROM<\/span><span style=\"font-weight: 400;\"> employees;<\/span><\/code><\/pre>\n\n\n\n<p><span style=\"font-weight: 400;\"><strong>M\u1ec7nh \u0111\u1ec1<\/strong> <\/span><b>SELECT DISTINCT (DQL)<\/b><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 truy xu\u1ea5t c\u00e1c gi\u00e1 tr\u1ecb duy nh\u1ea5t t\u1eeb m\u1ed9t c\u1ed9t c\u1ee5 th\u1ec3, h\u00e3y s\u1eed d\u1ee5ng m\u1ec7nh \u0111\u1ec1 <\/span><b>SELECT DISTINCT<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">SELECT<\/span> <span style=\"font-weight: 400;\">DISTINCT<\/span><span style=\"font-weight: 400;\"> department <\/span><span style=\"font-weight: 400;\">FROM<\/span><span style=\"font-weight: 400;\"> employees;<\/span><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-m\u1ec7nh-d\u1ec1-where-va-and-or-dql\"><strong>M\u1ec7nh \u0111\u1ec1 WHERE v\u00e0 AND\/OR (DQL)<\/strong><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">M\u1ec7nh \u0111\u1ec1 <\/span><b>WHERE<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u1ecdc d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 b\u1edfi c\u00e2u l\u1ec7nh <\/span><b>SELECT<\/b><span style=\"font-weight: 400;\">. B\u1ea1n c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n b\u1eb1ng to\u00e1n t\u1eed <\/span><b>AND<\/b><span style=\"font-weight: 400;\"> v\u00e0 <\/span><b>OR<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">SELECT<\/span><span style=\"font-weight: 400;\"> * <\/span><span style=\"font-weight: 400;\">FROM<\/span><span style=\"font-weight: 400;\"> employees\n<\/span><span style=\"font-weight: 400;\">WHERE<\/span><span style=\"font-weight: 400;\"> department = <\/span><span style=\"font-weight: 400;\">'IT'<\/span> <span style=\"font-weight: 400;\">AND<\/span><span style=\"font-weight: 400;\"> salary &gt; <\/span><span style=\"font-weight: 400;\">50000000<\/span><span style=\"font-weight: 400;\">;<\/span><\/code><\/pre>\n\n\n\n<p><strong>M\u1ec7nh \u0111\u1ec1 ORDER BY (DQL)<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">M\u1ec7nh \u0111\u1ec1 <\/span><b>ORDER BY<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 s\u1eafp x\u1ebfp d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 b\u1edfi c\u00e2u l\u1ec7nh <\/span><b>SELECT<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">SELECT<\/span><span style=\"font-weight: 400;\"> * <\/span><span style=\"font-weight: 400;\">FROM<\/span><span style=\"font-weight: 400;\"> employees\n<\/span><span style=\"font-weight: 400;\">ORDER<\/span> <span style=\"font-weight: 400;\">BY<\/span><span style=\"font-weight: 400;\"> last_name <\/span><span style=\"font-weight: 400;\">ASC<\/span><span style=\"font-weight: 400;\">, salary <\/span><span style=\"font-weight: 400;\">DESC<\/span><span style=\"font-weight: 400;\">;<\/span><\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-m\u1ec7nh-d\u1ec1-group-by-va-having\"><strong>M\u1ec7nh \u0111\u1ec1 GROUP BY v\u00e0 HAVING<\/strong><\/h4>\n\n\n\n<p><span style=\"font-weight: 400;\">M\u1ec7nh \u0111\u1ec1 <\/span><b>GROUP BY<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 nh\u00f3m c\u00e1c h\u00e0ng c\u00f3 c\u00f9ng gi\u00e1 tr\u1ecb trong c\u00e1c c\u1ed9t \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. M\u1ec7nh \u0111\u1ec1 <\/span><b>HAVING<\/b><span style=\"font-weight: 400;\"> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u1ecdc k\u1ebft qu\u1ea3 c\u1ee7a <\/span><b>GROUP BY<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"font-weight: 400;\">SELECT<\/span><span style=\"font-weight: 400;\"> department, <\/span><span style=\"font-weight: 400;\">COUNT<\/span><span style=\"font-weight: 400;\">(*) <\/span><span style=\"font-weight: 400;\">AS<\/span><span style=\"font-weight: 400;\"> num_employees, <\/span><span style=\"font-weight: 400;\">AVG<\/span><span style=\"font-weight: 400;\">(salary) <\/span><span style=\"font-weight: 400;\">AS<\/span><span style=\"font-weight: 400;\"> avg_salary\n<\/span><span style=\"font-weight: 400;\">FROM<\/span><span style=\"font-weight: 400;\"> employees\n<\/span><span style=\"font-weight: 400;\">GROUP<\/span> <span style=\"font-weight: 400;\">BY<\/span><span style=\"font-weight: 400;\"> department\n<\/span><span style=\"font-weight: 400;\">HAVING<\/span> <span style=\"font-weight: 400;\">COUNT<\/span><span style=\"font-weight: 400;\">(*) &gt; <\/span><span style=\"font-weight: 400;\">1\n<\/span><span style=\"font-weight: 400;\">ORDER<\/span> <span style=\"font-weight: 400;\">BY<\/span><span style=\"font-weight: 400;\"> avg_salary <\/span><span style=\"font-weight: 400;\">DESC<\/span><span style=\"font-weight: 400;\">;<\/span><\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-oracle-sql-developer-la-gi-g\u1ed3m-nh\u1eefng-tinh-nang-chinh-nao\"><span class=\"ez-toc-section\" id=\"Oracle_SQL_Developer_la_gi_Gom_nhung_tinh_nang_chinh_nao\"><\/span><b>Oracle SQL Developer l\u00e0 g\u00ec? G\u1ed3m nh\u1eefng t\u00ednh n\u0103ng ch\u00ednh n\u00e0o?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-oracle-sql-developer-la-gi\"><strong>Oracle SQL Developer l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 x\u00e2y d\u1ef1ng gi\u1ea3i ph\u00e1p Oracle, gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u Oracle trong c\u1ea3 c\u00e1ch tri\u1ec3n khai truy\u1ec1n th\u1ed1ng tr\u00ean m\u00e1y ch\u1ee7 v\u00e0 c\u00e1ch tri\u1ec3n khai tr\u00ean n\u1ec1n t\u1ea3ng \u0111\u00e1m m\u00e2y.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer cho ph\u00e9p l\u1eadp tr\u00ecnh vi\u00ean ph\u00e1t tri\u1ec3n c\u00e1c \u1ee9ng d\u1ee5ng PL\/SQL to\u00e0n di\u1ec7n t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i, v\u1edbi c\u00e1c t\u00ednh n\u0103ng nh\u01b0 b\u1ea3ng t\u00ednh \u0111\u1ec3 ch\u1ea1y c\u00e1c truy v\u1ea5n v\u00e0 t\u1eadp l\u1ec7nh, b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n DBA \u0111\u1ec3 qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u, giao di\u1ec7n b\u00e1o c\u00e1o, m\u1ed9t gi\u1ea3i ph\u00e1p thi\u1ebft k\u1ebf d\u1eef li\u1ec7u ho\u00e0n ch\u1ec9nh v\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng di d\u1eddi d\u00e0nh cho vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u00ean th\u1ee9 ba sang c\u01a1 s\u1edf d\u1eef li\u1ec7u Oracle.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-nh\u1eefng-tinh-nang-chinh-c\u1ee7a-oracle-sql-developer\"><strong>Nh\u1eefng t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a Oracle SQL Developer<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng quan tr\u1ecdng c\u1ee7a Oracle SQL Developer gi\u00fap l\u1eadp tr\u00ecnh vi\u00ean qu\u1ea3n l\u00fd v\u00e0 ph\u00e1t tri\u1ec3n c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3:<\/span><\/p>\n\n\n\n<p><strong>Truy xu\u1ea5t c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy xu\u1ea5t n\u1ed9i dung c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u00f4ng qua h\u00ecnh th\u1ee9c c\u00e2y k\u1ebft n\u1ed1i. Khi \u0111i\u1ec1u ch\u1ec9nh n\u00fat b\u1ea3ng, ph\u1ea7n m\u1ec1m hi\u1ec3n th\u1ecb c\u00e1c b\u1ea3ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111ang k\u1ebft n\u1ed1i.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">H\u1ec7 th\u1ed1ng h\u1ed7 tr\u1ee3 c\u00e1c lo\u1ea1i \u0111\u1ed1i t\u01b0\u1ee3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u nh\u01b0 Ch\u1ebf \u0111\u1ed9 xem, B\u1ea3ng, Ch\u1ec9 m\u1ee5c, Th\u1ee7 t\u1ee5c, H\u00e0ng \u0111\u1ee3i, Ch\u1ee9c n\u0103ng, B\u1ea3ng h\u00e0ng \u0111\u1ee3i, Lo\u1ea1i, Trigger, Trigger ch\u00e9o phi\u00ean, v\u00e0 nhi\u1ec1u h\u01a1n n\u1eefa.<\/span><\/p>\n\n\n\n<p><strong>T\u00ednh n\u0103ng di d\u1eddi d\u1eef li\u1ec7u<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer cung c\u1ea5p nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p di d\u1eddi d\u1eef li\u1ec7u t\u1eeb CSDL kh\u00e1c ho\u1eb7c \u0111\u1ebfn CSDL kh\u00e1c t\u1ed1i \u01b0u cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p kinh doanh. C\u00e1c chuy\u00ean gia ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng c\u1ea7n xem x\u00e9t t\u00ednh ch\u1ea5t v\u00e0 nhu c\u1ea7u ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec3 quy\u1ebft \u0111\u1ecbnh c\u00e1ch th\u1ee9c chuy\u1ec3n \u0111\u1ed5i ph\u00f9 h\u1ee3p.<\/span><\/p>\n\n\n\n<p><strong>Hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng t\u00ednh<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Ph\u1ea7n m\u1ec1m hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng b\u1ea3ng t\u00ednh v\u00e0 s\u1eed d\u1ee5ng h\u00ecnh th\u1ee9c n\u00e0y \u0111\u1ec3 th\u1ef1c thi k\u1ebft qu\u1ea3 truy v\u1ea5n v\u00e0 hi\u1ec3n th\u1ecb n\u1ed9i dung c\u1ee7a c\u00e1c b\u1ea3ng. M\u1ed9t s\u1ed1 \u0111\u1ecbnh d\u1ea1ng bao g\u1ed3m V\u0103n b\u1ea3n, Excel, HTML, Delimited, v\u00e0 c\u00e1c c\u00e2u l\u1ec7nh Ch\u00e8n.<\/span><\/p>\n\n\n\n<p><strong>M\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n t\u00edch h\u1ee3p (IDE) cho ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh PL\/SQL<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">M\u00f4i tr\u01b0\u1eddng n\u00e0y cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng th\u1ef1c thi, bi\u00ean d\u1ecbch v\u00e0 t\u00e1i c\u1ea5u tr\u00fac ch\u1ee9c n\u0103ng, lo\u1ea1i d\u1eef li\u1ec7u, procedure (th\u1ee7 t\u1ee5c trong SQL), g\u00f3i v\u00e0 trigger PL\/SQL. Ph\u1ea7n m\u1ec1m h\u1ed7 tr\u1ee3 bi\u00ean d\u1ecbch, g\u1ee1 l\u1ed7i, Hierarchical Profiling (nh\u1eadn di\u1ec7n ph\u00e2n c\u1ea5p), Code v\u00e0 t\u00e0i li\u1ec7u.<\/span><\/p>\n\n\n\n<p><strong>B\u00e1o c\u00e1o \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc v\u00e0 b\u00e1o c\u00e1o t\u00f9y ch\u1ec9nh<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 ch\u1ea1y c\u00e1c b\u00e1o c\u00e1o \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 ho\u1ea1t \u0111\u1ed9ng, c\u1ea5u h\u00ecnh v\u00e0 n\u1ed9i dung c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh. Ng\u01b0\u1eddi d\u00f9ng c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o v\u00e0 chia s\u1ebb c\u00e1c b\u00e1o c\u00e1o t\u00f9y ch\u1ec9nh.<\/span><\/p>\n\n\n\n<p><strong>Ki\u1ec3m th\u1eed \u0111\u01a1n v\u1ecb cho m\u00e3 PL\/SQL<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng t\u1ea1o c\u00e1c l\u1ec7nh ki\u1ec3m th\u1eed \u0111\u1ec3 xem ch\u01b0\u01a1ng tr\u00ecnh c\u1ee7a m\u00ecnh c\u00f3 \u0111ang ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh hay kh\u00f4ng. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 ch\u1ea1y c\u00e1c l\u1ec7nh ki\u1ec3m th\u1eed n\u00e0y tr\u1ef1c ti\u1ebfp t\u1eeb giao di\u1ec7n SQL Developer ho\u1eb7c s\u1eed d\u1ee5ng l\u1ec7nh SQL Developer tr\u00ean m\u00f4i tr\u01b0\u1eddng x\u00e2y d\u1ef1ng t\u1ef1 \u0111\u1ed9ng.<\/span><\/p>\n\n\n\n<p><strong>M\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer cung c\u1ea5p c\u00e1c ti\u1ec7n \u00edch m\u00f4 h\u00ecnh h\u00f3a d\u1eef li\u1ec7u c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u1ed9c l\u1eadp. M\u1ed9t s\u1ed1 c\u0169ng gi\u00fap ng\u01b0\u1eddi d\u00f9ng c\u1ea5u h\u00ecnh, qu\u1ea3n l\u00fd v\u00e0 ki\u1ec3m th\u1eed m\u1ed9t s\u1ed1 ch\u01b0\u01a1ng tr\u00ecnh SQL.<\/span><\/p>\n\n\n\n<p><strong>N\u1ec1n t\u1ea3ng di d\u1eddi hi\u1ec7u qu\u1ea3 cho c\u01a1 s\u1edf d\u1eef li\u1ec7u Oracle Database<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u1ec5 d\u00e0ng, t\u00ednh b\u1ea3o m\u1eadt ch\u1eb7t ch\u1ebd gi\u00fap \u0111\u1ea3m b\u1ea3o t\u0103ng tr\u01b0\u1edfng hi\u1ec7u su\u1ea5t.<\/span><\/p>\n\n\n\n<p><strong>T\u01b0\u01a1ng t\u00e1c v\u1edbi d\u1eef li\u1ec7u ngu\u1ed3n<\/strong><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer t\u1ef1 \u0111\u1ed9ng n\u1eafm b\u1eaft d\u1eef li\u1ec7u t\u1eeb c\u01a1 s\u1edf d\u1eef li\u1ec7u ngu\u1ed3n v\u00e0 hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng m\u1ed9t m\u00f4 h\u00ecnh \u0111\u1ea1i di\u1ec7n cho c\u01a1 s\u1edf d\u1eef li\u1ec7u ngu\u1ed3n trong Oracle. Sau \u0111\u00f3, h\u1ec7 th\u1ed1ng l\u01b0u m\u00f4 h\u00ecnh n\u00e0y trong m\u1ed9t kho l\u01b0u tr\u1eef. T\u1ea1i \u0111\u00e2y, m\u00f4 h\u00ecnh \u0111\u00e3 l\u01b0u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra m\u1ed9t m\u00f4 h\u00ecnh \u0111\u00e3 chuy\u1ec3n \u0111\u1ed5i v\u1edbi c\u1ea5u tr\u00fac c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u00edch.<\/span><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u1ee8ng tuy\u1ec3n <a href=\"https:\/\/itviec.com\/viec-lam-it\/sql?utm_medium=anchor_text_mid&amp;utm_source=blog&amp;utm_campaign=viec_lam_sql&amp;utm_content=oracle_sql\" target=\"_blank\" rel=\"noreferrer noopener\">vi\u1ec7c l\u00e0m SQL<\/a> ngay tr\u00ean ITviec<\/strong><\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-h\u01b0\u1edbng-d\u1eabn-s\u1eed-d\u1ee5ng-oracle-sql-developer-chi-ti\u1ebft\"><span class=\"ez-toc-section\" id=\"Huong_dan_su_dung_Oracle_SQL_Developer_chi_tiet\"><\/span><b>H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Oracle SQL Developer chi ti\u1ebft<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng Oracle SQL Developer, l\u1eadp tr\u00ecnh vi\u00ean c\u1ea7n th\u1ef1c hi\u1ec7n nh\u1eefng thao t\u00e1c sau \u0111\u00e2y:<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-cai-d\u1eb7t-oracle-sql-developer\"><strong>C\u00e0i \u0111\u1eb7t Oracle SQL Developer:<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">T\u1ea3i g\u00f3i c\u00e0i \u0111\u1eb7t t\u1eeb <\/span><a href=\"https:\/\/www.oracle.com\/database\/sqldeveloper\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">trang web ch\u00ednh th\u1ee9c c\u1ee7a Oracle<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Gi\u1ea3i n\u00e9n t\u1eadp tin \u0111\u00e3 t\u1ea3i xu\u1ed1ng v\u00e0o th\u01b0 m\u1ee5c b\u1ea1n ch\u1ecdn.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">B\u1eaft \u0111\u1ea7u c\u00e0i \u0111\u1eb7t b\u1eb1ng c\u00e1ch ch\u1ea1y \u201csqldeveloper.exe\u201d ho\u1eb7c \u201csqldeveloper.sh\u201d.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">C\u1ea9n th\u1eadn l\u1ef1a ch\u1ecdn c\u00e1c t\u00f9y ch\u1ecdn ph\u00f9 h\u1ee3p v\u00e0 nh\u1eadp c\u00e1c th\u00f4ng tin nh\u01b0 t\u00ean ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u1eadt kh\u1ea9u.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Sau khi c\u00e0i \u0111\u1eb7t xong, nh\u1ea5p \u0111\u00fap v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng nh\u01b0 h\u00ecnh d\u01b0\u1edbi \u0111\u1ec3 kh\u1edfi ch\u1ea1y Oracle SQL Developer.<\/span><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"297\" height=\"337\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/3oracle-sql-vippro.png\" alt=\"oracle sql developer\" class=\"wp-image-65520\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/3oracle-sql-vippro.png 297w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/3oracle-sql-vippro-264x300.png 264w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/3oracle-sql-vippro-176x200.png 176w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/3oracle-sql-vippro-88x100.png 88w\" sizes=\"auto, (max-width: 297px) 100vw, 297px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Cung c\u1ea5p nh\u1eefng th\u00f4ng tin li\u00ean quan nh\u01b0 t\u00ean m\u00e1y ch\u1ee7, s\u1ed1 c\u1ed5ng v\u00e0 th\u00f4ng tin \u0111\u0103ng nh\u1eadp \u0111\u1ec3 c\u1ea5u h\u00ecnh k\u1ebft n\u1ed1i c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/span><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-lam-quen-va-thao-tac-v\u1edbi-giao-di\u1ec7n-oracle-sql-developer\"><strong>L\u00e0m quen v\u00e0 thao t\u00e1c v\u1edbi giao di\u1ec7n Oracle SQL Developer<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Giao di\u1ec7n c\u1ee7a Oracle SQL Developer c\u00f3 thi\u1ebft k\u1ebf th\u00e2n thi\u1ec7n v\u1edbi nhi\u1ec1u t\u00ednh n\u0103ng.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">C\u1eeda s\u1ed5 ch\u00ednh bao g\u1ed3m c\u00e1c \u00f4 kh\u00e1c nhau, m\u1ed7i \u00f4 ph\u1ee5c v\u1ee5 m\u1ed9t m\u1ee5c \u0111\u00edch kh\u00e1c nhau.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Giao di\u1ec7n c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 c\u00e1 nh\u00e2n h\u00f3a kh\u00f4ng gian l\u00e0m vi\u1ec7c c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch s\u1eafp x\u1ebfp l\u1ea1i c\u00e1c \u00f4, t\u1ed5 ch\u1ee9c c\u00e1c tab v\u00e0 t\u1ea1o ph\u00edm t\u1eaft.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Tr\u00ecnh so\u1ea1n th\u1ea3o t\u00edch h\u1ee3p gi\u00fap vi\u1ec7c ph\u00e1t tri\u1ec3n m\u00e3 code d\u1ec5 d\u00e0ng h\u01a1n v\u1edbi c\u00e1c t\u00ednh n\u0103ng nh\u01b0 ho\u00e0n th\u00e0nh m\u00e3, l\u00e0m n\u1ed5i b\u1eadt c\u00fa ph\u00e1p v\u00e0 t\u00edch h\u1ee3p ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n.<\/span><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"595\" height=\"507\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/4oracle-sql-vippro.jpg\" alt=\"oracle sql developer\" class=\"wp-image-65521\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/4oracle-sql-vippro.jpg 595w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/4oracle-sql-vippro-300x256.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/4oracle-sql-vippro-200x170.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/4oracle-sql-vippro-100x85.jpg 100w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/4oracle-sql-vippro-528x450.jpg 528w\" sizes=\"auto, (max-width: 595px) 100vw, 595px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-lien-k\u1ebft-oracle-sql-developer-v\u1edbi-m\u1ed9t-c\u01a1-s\u1edf-d\u1eef-li\u1ec7u\"><strong>Li\u00ean k\u1ebft Oracle SQL Developer v\u1edbi m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Kh\u1edfi \u0111\u1ed9ng Oracle SQL Developer tr\u00ean m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng d\u1ea5u c\u1ed9ng m\u00e0u xanh l\u00e1 c\u00e2y tr\u00ean thanh c\u00f4ng c\u1ee5, m\u1edf ra h\u1ed9p tho\u1ea1i &#8216;K\u1ebft n\u1ed1i C\u01a1 s\u1edf d\u1eef li\u1ec7u M\u1edbi \/ Ch\u1ecdn&#8217;.<\/span><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"470\" height=\"281\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/5oracle-sql-vippro.png\" alt=\"oracle sql developer\" class=\"wp-image-65522\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/5oracle-sql-vippro.png 470w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/5oracle-sql-vippro-300x179.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/5oracle-sql-vippro-200x120.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/5oracle-sql-vippro-100x60.png 100w\" sizes=\"auto, (max-width: 470px) 100vw, 470px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Nh\u1eadp t\u00ean k\u1ebft n\u1ed1i, t\u00ean ng\u01b0\u1eddi d\u00f9ng, m\u1eadt kh\u1ea9u, t\u00ean m\u00e1y ch\u1ee7 v\u00e0 s\u1ed1 c\u1ed5ng. Nh\u1ea5p v\u00e0o &#8216;Ki\u1ec3m tra&#8217; \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n \u0111\u00e3 k\u1ebft n\u1ed1i th\u00e0nh c\u00f4ng. Sau \u0111\u00f3 nh\u1ea5n &#8216;K\u1ebft n\u1ed1i&#8217;.<\/span><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"757\" height=\"419\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/1oracle-sql-vippro.png\" alt=\"oracle sql developer\" class=\"wp-image-65518\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/1oracle-sql-vippro.png 757w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/1oracle-sql-vippro-300x166.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/1oracle-sql-vippro-700x387.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/1oracle-sql-vippro-200x111.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/1oracle-sql-vippro-100x55.png 100w\" sizes=\"auto, (max-width: 757px) 100vw, 757px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">B\u1ea1n c\u0169ng c\u1ea7n ch\u1ecdn lo\u1ea1i tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n \u0111\u00fang trong ph\u1ea7n &#8216;Lo\u1ea1i K\u1ebft n\u1ed1i&#8217;, t\u00f9y thu\u1ed9c v\u00e0o nhu c\u1ea7u c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n.<\/span><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-s\u1eed-d\u1ee5ng-cong-c\u1ee5-sql-worksheet\"><strong>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 SQL Worksheet<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">M\u1edf c\u00f4ng c\u1ee5 SQL Worksheet: Kh\u1edfi ch\u1ea1y Oracle SQL Developer, sau \u0111\u00f3 nh\u1ea5p v\u00e0o \u201cSQL Worksheet\u201d d\u01b0\u1edbi menu \u201cXem\u201d.<\/span><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">K\u1ebft n\u1ed1i v\u1edbi C\u01a1 s\u1edf d\u1eef li\u1ec7u: Nh\u1ea5p v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng d\u1ea5u c\u1ed9ng m\u00e0u xanh l\u00e1 c\u00e2y trong \u00f4 K\u1ebft n\u1ed1i v\u00e0 nh\u1eadp c\u00e1c chi ti\u1ebft k\u1ebft n\u1ed1i c\u1ee7a b\u1ea1n.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">Th\u1ef1c thi c\u00e1c c\u00e2u l\u1ec7nh SQL: Nh\u1eadp c\u00e1c c\u00e2u l\u1ec7nh SQL v\u00e0o khu v\u1ef1c v\u0103n b\u1ea3n tr\u1ed1ng v\u00e0 nh\u1ea5n Ctrl + Enter ho\u1eb7c nh\u1ea5p v\u00e0o m\u0169i t\u00ean xanh \u0111\u1ec3 th\u1ef1c thi.<\/span><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"595\" height=\"507\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/7oracle-sql-vippro.jpg\" alt=\"oracle sql developer\" class=\"wp-image-65524\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/7oracle-sql-vippro.jpg 595w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/7oracle-sql-vippro-300x256.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/7oracle-sql-vippro-200x170.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/7oracle-sql-vippro-100x85.jpg 100w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/7oracle-sql-vippro-528x450.jpg 528w\" sizes=\"auto, (max-width: 595px) 100vw, 595px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">Xem k\u1ebft qu\u1ea3: Xem k\u1ebft qu\u1ea3 trong tab \u201cK\u1ebft qu\u1ea3\u201d \u1edf d\u01b0\u1edbi khu v\u1ef1c m\u00e3. Chuy\u1ec3n \u0111\u1ed5i tab ho\u1eb7c xem ch\u00fang c\u1ea1nh nhau.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">L\u01b0u, Xu\u1ea5t ho\u1eb7c In: Nh\u1ea5p chu\u1ed9t ph\u1ea3i v\u00e0o b\u1ea5t k\u1ef3 tab k\u1ebft qu\u1ea3 n\u00e0o v\u00e0 ch\u1ecdn t\u1eeb c\u00e1c t\u00f9y ch\u1ecdn c\u00f3 s\u1eb5n.<\/span><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-thao-tac-v\u1edbi-cac-v\u1eadt-th\u1ec3-trong-c\u01a1-s\u1edf-d\u1eef-li\u1ec7u-qua-oracle-sql-developer\"><strong>Thao t\u00e1c v\u1edbi c\u00e1c v\u1eadt th\u1ec3 trong c\u01a1 s\u1edf d\u1eef li\u1ec7u qua Oracle SQL Developer<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">B\u1eaft \u0111\u1ea7u l\u00e0m vi\u1ec7c v\u1edbi Oracle SQL Developer b\u1eb1ng c\u00e1ch k\u1ebft n\u1ed1i v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u1ea1n \u0111\u00e3 ch\u1ecdn.<\/span><\/li>\n\n\n\n<li><span style=\"font-weight: 400;\">B\u00ean tr\u00e1i c\u1ee7a c\u1eeda s\u1ed5, b\u1ea1n s\u1ebd th\u1ea5y Tr\u00ecnh duy\u1ec7t V\u1eadt th\u1ec3, hi\u1ec3n th\u1ecb t\u1ea5t c\u1ea3 c\u00e1c v\u1eadt th\u1ec3 c\u00f3 s\u1eb5n nh\u01b0 b\u1ea3ng, ch\u1ebf \u0111\u1ed9 xem v\u00e0 g\u00f3i.<\/span><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"714\" height=\"514\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/2oracle-sql-vippro.png\" alt=\"oracle sql developer\" class=\"wp-image-65519\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/2oracle-sql-vippro.png 714w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/2oracle-sql-vippro-300x216.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/2oracle-sql-vippro-640x461.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/2oracle-sql-vippro-200x144.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/2oracle-sql-vippro-100x72.png 100w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/03\/2oracle-sql-vippro-625x450.png 625w\" sizes=\"auto, (max-width: 714px) 100vw, 714px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-weight: 400;\">\u0110\u1ec3 t\u1ea1o m\u1ed9t b\u1ea3ng ho\u1eb7c ch\u1ebf \u0111\u1ed9 xem m\u1edbi, nh\u1ea5p chu\u1ed9t ph\u1ea3i v\u00e0o th\u01b0 m\u1ee5c t\u01b0\u01a1ng \u1ee9ng trong tr\u00ecnh duy\u1ec7t v\u00e0 ch\u1ecdn \u201cT\u1ea1o\u201d. Sau \u0111\u00f3, x\u00e1c \u0111\u1ecbnh c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a v\u1eadt th\u1ec3 c\u1ee7a b\u1ea1n.<\/span><\/li>\n<\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">V\u1edbi nh\u1eefng thao t\u00e1c tr\u00ean, b\u1ea1n \u0111\u00e3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Oracle SQL Developer m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 v\u00e0 linh ho\u1ea1t \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00e0 ph\u00e1t tri\u1ec3n c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-cac-tinh-nang-b\u1ed5-sung-c\u1ee7a-oracle-sql-developer\"><span class=\"ez-toc-section\" id=\"Cac_tinh_nang_bo_sung_cua_Oracle_SQL_Developer\"><\/span><b>C\u00e1c t\u00ednh n\u0103ng b\u1ed5 sung c\u1ee7a Oracle SQL Developer<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-t\u1ea1o-bao-cao-chi-ti\u1ebft-v\u1ec1-cac-d\u1ed1i-t\u01b0\u1ee3ng-c\u01a1-s\u1edf-d\u1eef-li\u1ec7u\"><strong>T\u1ea1o b\u00e1o c\u00e1o chi ti\u1ebft v\u1ec1 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer cho ph\u00e9p t\u1ea1o b\u00e1o c\u00e1o chi ti\u1ebft v\u1ec1 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong c\u01a1 s\u1edf d\u1eef li\u1ec7u, gi\u00fap ph\u00e2n t\u00edch c\u1ea5u tr\u00fac v\u00e0 s\u1ef1 ph\u1ee5 thu\u1ed9c c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u, h\u1ed7 tr\u1ee3 quy\u1ebft \u0111\u1ecbnh v\u1ec1 t\u1ed1i \u01b0u h\u00f3a v\u00e0 s\u1eeda l\u1ed7i. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng n\u00e0y \u0111\u1ec3 t\u1ea1o t\u00e0i li\u1ec7u cho c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh, gi\u00fap c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean kh\u00e1c hi\u1ec3u v\u00e0 l\u00e0m vi\u1ec7c v\u1edbi code d\u1ec5 d\u00e0ng h\u01a1n.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-sql-tuning-advisor\"><strong>SQL Tuning Advisor<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">T\u00ednh n\u0103ng n\u00e0y gi\u00fap t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t truy v\u1ea5n SQL. \u0110\u00e2y l\u00e0 t\u00ednh n\u0103ng gi\u00fap ph\u00e2n t\u00edch k\u1ebf ho\u1ea1ch th\u1ef1c thi c\u1ee7a truy v\u1ea5n v\u00e0 \u0111\u1ec1 xu\u1ea5t c\u1ea3i ti\u1ebfn d\u1ef1a tr\u00ean c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u00e0 k\u1ef9 thu\u1eadt tinh ch\u1ec9nh hi\u1ec7u su\u1ea5t t\u1ed1t nh\u1ea5t. Nh\u1eefng \u0111\u1ec1 xu\u1ea5t n\u00e0y c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c truy v\u1ea5n.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ch\u1ee9c-nang-g\u1ee1-l\u1ed7i-m\u1ea1nh-m\u1ebd\"><strong>Ch\u1ee9c n\u0103ng g\u1ee1 l\u1ed7i m\u1ea1nh m\u1ebd<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer c\u0169ng cung c\u1ea5p ch\u1ee9c n\u0103ng g\u1ee1 l\u1ed7i m\u1ea1nh m\u1ebd cho ng\u01b0\u1eddi d\u00f9ng, cho ph\u00e9p l\u1eadp tr\u00ecnh vi\u00ean \u0111i\u1ec1u tra m\u00e3 PL\/SQL c\u1ee7a m\u00ecnh theo t\u1eebng d\u00f2ng m\u1ed9t. T\u00ednh n\u0103ng n\u00e0y gi\u00fap ng\u01b0\u1eddi d\u00f9ng x\u00e1c \u0111\u1ecbnh v\u00e0 s\u1eeda l\u1ed7i nhanh ch\u00f3ng, ti\u1ebft ki\u1ec7m th\u1eddi gian. Chuy\u00ean vi\u00ean ph\u00e1t tri\u1ec3n c\u0169ng c\u00f3 th\u1ec3 \u0111\u1eb7t \u0111i\u1ec3m d\u1eebng, ki\u1ec3m tra bi\u1ebfn v\u00e0 theo d\u00f5i lu\u1ed3ng th\u1ef1c thi trong th\u1eddi gian th\u1ef1c.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-cac-cau-h\u1ecfi-th\u01b0\u1eddng-g\u1eb7p-v\u1ec1-oracle-sql\"><span class=\"ez-toc-section\" id=\"Cac_cau_hoi_thuong_gap_ve_Oracle_SQL\"><\/span><b>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Oracle SQL<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-vi-sao-oracle-sql-d\u01b0\u1ee3c-s\u1eed-d\u1ee5ng-ph\u1ed5-bi\u1ebfn\"><strong>V\u00ec sao Oracle SQL \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn?<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1edd v\u00e0o kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng d\u1ec5 d\u00e0ng v\u00e0 kh\u1ea3 n\u0103ng x\u1eed l\u00fd \u0111\u01b0\u1ee3c l\u01b0\u1ee3ng d\u1eef li\u1ec7u l\u1edbn, c\u00f9ng kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 giao d\u1ecbch \u0111\u1ed3ng th\u1eddi. H\u1ec7 th\u1ed1ng cung c\u1ea5p t\u00ednh linh ho\u1ea1t trong vi\u1ec7c t\u1ea1o ch\u1ec9 m\u1ee5c v\u00e0 h\u1ed7 tr\u1ee3 c\u01a1 s\u1edf d\u1eef li\u1ec7u ph\u00e2n t\u00e1n, ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a c\u00e1c t\u1ed5 ch\u1ee9c l\u1edbn ho\u1ea1t \u0111\u1ed9ng \u0111a qu\u1ed1c gia.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">\u0110\u1ed3ng th\u1eddi nh\u1edd s\u1eed d\u1ee5ng ng\u00f4n ng\u1eef PL\/SQL v\u00e0 s\u1edf h\u1eefu m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao, Oracle SQL tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho c\u00e1c doanh nghi\u1ec7p y\u00eau c\u1ea7u nh\u1eefng \u1ee9ng d\u1ee5ng c\u00f3 hi\u1ec7u su\u1ea5t cao v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ai-nen-h\u1ecdc-oracle-sql\"><strong>Ai n\u00ean h\u1ecdc Oracle SQL?<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Vi\u1ec7c h\u1ecdc h\u1ecfi ki\u1ebfn th\u1ee9c v\u00e0 k\u1ef9 n\u0103ng s\u1eed d\u1ee5ng Oracle SQL l\u00e0 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p d\u00e0nh cho b\u1ea5t k\u1ef3 ai mu\u1ed1n gia nh\u1eadp v\u00e0o l\u0129nh v\u1ef1c c\u00f4ng ngh\u1ec7 th\u00f4ng tin. C\u1ee5 th\u1ec3, nh\u1eefng l\u1ef1a ch\u1ecdn s\u1ef1 nghi\u1ec7p ti\u1ec1m n\u0103ng nh\u01b0 Software Developer, Database Developer, Data Analyst v\u00e0 Data Scientist \u0111\u1ec1u y\u00eau c\u1ea7u ki\u1ebfn th\u1ee9c v\u1eefng v\u1ec1 SQL.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Ngo\u00e0i ra, v\u1ecb tr\u00ed Quality Assurance (QA) Tester c\u0169ng c\u00f3 l\u1ee3i th\u1ebf c\u1ea1nh tranh khi n\u1eafm v\u1eefng k\u1ef9 n\u0103ng v\u1ec1 Oracle SQL \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c nhi\u1ec7m v\u1ee5 ki\u1ec3m th\u1eed v\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-oracle-sql-developer-co-mi\u1ec5n-phi-khong\"><strong>Oracle SQL Developer c\u00f3 mi\u1ec5n ph\u00ed kh\u00f4ng?<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Oracle SQL Developer l\u00e0 m\u1ed9t s\u1ea3n ph\u1ea9m mi\u1ec5n ph\u00ed m\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1ea3i xu\u1ed1ng t\u1eeb OTN (Oracle Technology Network). Tuy nhi\u00ean, tr\u01b0\u1edbc ti\u00ean ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i ch\u1ea5p nh\u1eadn th\u1ecfa thu\u1eadn c\u1ea5p ph\u00e9p c\u1ee7a OTN.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-oracle-sql-developer-co-ph\u1ea3i-la-m\u1ed9t-c\u01a1-s\u1edf-d\u1eef-li\u1ec7u-khong\"><strong>Oracle SQL Developer c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng?<\/strong><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Kh\u00f4ng, Oracle SQL Developer kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u. Th\u1ef1c t\u1ebf, \u0111\u00e2y l\u00e0 m\u1ed9t m\u00f4i tr\u01b0\u1eddng ph\u00e1t tri\u1ec3n t\u00edch h\u1ee3p (IDE) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n v\u00e0 qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u Oracle.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh Java v\u00e0 c\u00f3 s\u1eb5n tr\u00ean nhi\u1ec1u h\u1ec7 \u0111i\u1ec1u h\u00e0nh nh\u01b0 Windows, OS X v\u00e0 Linux. Oracle SQL Developer cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 \u0111\u1ec3 vi\u1ebft, th\u1ef1c thi v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u00e1c truy v\u1ea5n SQL, qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u, v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 kh\u00e1c li\u00ean quan \u0111\u1ebfn ph\u00e1t tri\u1ec3n \u1ee9ng d\u1ee5ng d\u1ef1a tr\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u Oracle.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-t\u1ed5ng-k\u1ebft\"><span class=\"ez-toc-section\" id=\"Tong_ket\"><\/span><strong>T\u1ed5ng k\u1ebft<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><span style=\"font-weight: 400;\">S\u1edf h\u1eefu nh\u1eefng t\u00ednh n\u0103ng m\u1ea1nh m\u1ebd v\u00e0 kh\u1ea3 n\u0103ng linh ho\u1ea1t v\u00f4 c\u00f9ng h\u1eefu \u00edch, Oracle SQL v\u00e0 Oracle SQL Developer l\u00e0 c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu \u0111\u1ed1i v\u1edbi m\u1ecdi chuy\u00ean gia IT.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">\u0110\u1eebng ng\u1ea7n ng\u1ea1i h\u1ecdc h\u1ecfi v\u1ec1 Oracle SQL ngay t\u1eeb h\u00f4m nay, v\u00e0 h\u00e3y c\u00f9ng ti\u1ebfp t\u1ee5c theo d\u00f5i ITviec \u0111\u1ec3 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt c\u00e1c ki\u1ebfn th\u1ee9c v\u00e0 xu h\u01b0\u1edbng c\u00f4ng ngh\u1ec7 th\u00f4ng tin m\u1edbi nh\u1ea5t!<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2.png\" alt=\"robby-2\" class=\"wp-image-5668\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2-200x200.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2-60x60.png 60w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><\/figure>\n<\/div>\n\n\n\n<p class=\"has-text-align-center has-text-align-center\" id=\"block-bdf220a1-3635-4794-9101-81d879939b92\"><strong>B\u1ea1n th\u1ea5y b\u00e0i vi\u1ebft hay v\u00e0 h\u1eefu \u00edch? \u0110\u1eebng ng\u1ea1i Share v\u1edbi b\u1ea1n b\u00e8 v\u00e0 \u0111\u1ed3ng nghi\u1ec7p nh\u00e9.<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center has-text-align-center\" id=\"block-a1315aab-406f-48df-97fc-6b9584e6e134\"><strong>V\u00e0 nhanh tay tham kh\u1ea3o&nbsp;<a href=\"http:\/\/itviec.com\/?utm_medium=anchor_text_low&amp;utm_source=blog&amp;utm_campaign=viec_lam_it&amp;utm_content=oracle_sql\" target=\"_blank\" rel=\"noreferrer noopener\">vi\u1ec7c l\u00e0m IT<\/a>&nbsp;\u201cch\u1ea5t\u201d tr\u00ean ITviec<\/strong>!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Oracle SQL v\u00e0 Oracle SQL Developer kh\u00f4ng ch\u1ec9 l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 quan tr\u1ecdng m\u00e0 c\u00f2n l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a n\u1ec1n t\u1ea3ng d\u1eef li\u1ec7u l\u1edbn Oracle Database. H\u00e3y c\u00f9ng ITviec kh\u00e1m ph\u00e1 t\u1ea5t t\u1ea7n t\u1eadt v\u1ec1 Oracle SQL ngay trong b\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec3 ph\u00e1t tri\u1ec3n s\u1ef1 nghi\u1ec7p c\u1ee7a ch\u00ednh m\u00ecnh trong ng\u00e0nh c\u00f4ng ngh\u1ec7 [&hellip;]<\/p>\n","protected":false},"author":211,"featured_media":65661,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[109],"tags":[],"class_list":["post-65517","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chuyen-mon-it"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Oracle SQL l\u00e0 g\u00ec? 11 l\u1ec7nh Oracle SQL th\u00f4ng d\u1ee5ng - ITviec Blog<\/title>\n<meta name=\"description\" content=\"T\u1ed5ng h\u1ee3p 11 c\u00e2u l\u1ec7nh Oracle SQL ph\u1ed5 bi\u1ebfn v\u00e0 H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m Oracle SQL Developer to\u00e0n di\u1ec7n t\u1eeb A \u0111\u1ebfn Z.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itviec.com\/blog\/oracle-sql\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle SQL l\u00e0 g\u00ec? 11 l\u1ec7nh Oracle SQL th\u00f4ng d\u1ee5ng\" \/>\n<meta property=\"og:description\" content=\"Oracle SQL v\u00e0 Oracle SQL Developer kh\u00f4ng ch\u1ec9 l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 quan tr\u1ecdng m\u00e0 c\u00f2n l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a n\u1ec1n t\u1ea3ng d\u1eef li\u1ec7u l\u1edbn Oracle Database. 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