<\/b> <\/p>\n\u6bd4\u8f83Oracle\u548cDB2\u6570\u636e\u5e93\u7684SQL\u64cd\u4f5c<\/h1>\n<\/p>\n
Oracle\u548cDB2\u662f\u4e24\u79cd\u5e38\u89c1\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5b83\u4eec\u90fd\u652f\u6301SQL\uff08Structured Query Language\uff09\u7528\u4e8e\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u548c\u7ba1\u7406\u3002\u5c3d\u7ba1\u5b83\u4eec\u90fd\u9075\u5faaSQL\u6807\u51c6\uff0c\u4f46\u5728\u67d0\u4e9b\u65b9\u9762\u4ecd\u6709\u4e00\u4e9b\u4e0d\u540c\u4e4b\u5904\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecdOracle\u548cDB2\u5728SQL\u64cd\u4f5c\u4e0a\u7684\u5f02\u540c\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u4ee5\u4fbf\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u3002<\/p>\n
\u4e00\u3001\u521b\u5efa\u8868\u683c\uff1a<\/p>\n
\u5728Oracle\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201cemployee\u201d\u7684\u8868\u683c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
CREATE TABLE employee (\n emp_id NUMBER PRIMARY KEY,\n emp_name VARCHAR2(50),\n emp_salary NUMBER\n);<\/pre>\n\u800c\u5728DB2\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201cemployee\u201d\u7684\u8868\u683c\u7684SQL\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n
CREATE TABLE employee (\n emp_id INTEGER PRIMARY KEY,\n emp_name VARCHAR(50),\n emp_salary DECIMAL(10,2)\n);<\/pre>\n\u53ef\u4ee5\u770b\u5230\uff0cOracle\u4e2d\u6570\u636e\u7c7b\u578b\u4f7f\u7528\u7684\u662f\u201cNUMBER\u201d\u548c\u201cVARCHAR2\u201d\uff0c\u800cDB2\u4e2d\u5219\u5206\u522b\u662f\u201cINTEGER\u201d\u3001\u201cVARCHAR\u201d\u548c\u201cDECIMAL\u201d\u3002<\/p>\n
\u4e8c\u3001\u63d2\u5165\u6570\u636e\uff1a<\/p>\n
\u5728Oracle\u4e2d\u63d2\u5165\u6570\u636e\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
INSERT INTO employee(emp_id, emp_name, emp_salary) VALUES (101, 'Alice', 5000);<\/pre>\n\u800c\u5728DB2\u4e2d\uff0c\u76f8\u540c\u64cd\u4f5c\u7684SQL\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n
INSERT INTO employee(emp_id, emp_name, emp_salary) VALUES (101, 'Alice', 5000.00);<\/pre>\n\u5728DB2\u4e2d\u9700\u8981\u6ce8\u610f\u5c0f\u6570\u7684\u7cbe\u5ea6\uff0c\u9700\u8981\u5728DECIMAL\u540e\u6307\u5b9a\u603b\u957f\u5ea6\u548c\u5c0f\u6570\u70b9\u4f4d\u6570\u3002<\/p>\n
\u4e09\u3001\u67e5\u8be2\u6570\u636e\uff1a<\/p>\n
\u5728Oracle\u4e2d\u67e5\u8be2\u6570\u636e\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
SELECT * FROM employee WHERE emp_salary > 3000;<\/pre>\n\u800c\u5728DB2\u4e2d\uff0c\u76f8\u540c\u67e5\u8be2\u7684SQL\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n
SELECT * FROM employee WHERE emp_salary > 3000.00;<\/pre>\n\u540c\u6837\u9700\u8981\u6ce8\u610f\u5c0f\u6570\u7684\u7cbe\u5ea6\u3002<\/p>\n
\u56db\u3001\u66f4\u65b0\u6570\u636e\uff1a<\/p>\n
\u5728Oracle\u4e2d\u66f4\u65b0\u6570\u636e\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n
UPDATE employee SET emp_salary = 6000 WHERE emp_id = 101;<\/pre>\n\u800c\u5728DB2\u4e2d\uff0c\u76f8\u540c\u64cd\u4f5c\u7684SQL\u8bed\u53e5\u5982\u4e0b\uff1a<\/p>\n
UPDATE employee SET emp_salary = 6000.00 WHERE emp_id = 101;<\/pre>\n\u9700\u8981\u540c\u6837\u6ce8\u610f\u5c0f\u6570\u7684\u7cbe\u5ea6\u3002<\/p>\n
\u7efc\u4e0a\u6240\u8ff0\uff0c\u5c3d\u7ba1Oracle\u548cDB2\u90fd\u662f\u6d41\u884c\u7684\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u4f46\u5728SQL\u64cd\u4f5c\u4e0a\u8fd8\u662f\u5b58\u5728\u4e00\u4e9b\u5fae\u5c0f\u7684\u5dee\u5f02\u3002\u901a\u8fc7\u672c\u6587\u7684\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\uff0c\u8bfb\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u4e86\u89e3Oracle\u548cDB2\u5728SQL\u64cd\u4f5c\u65b9\u9762\u7684\u5f02\u540c\uff0c\u4e3a\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u66f4\u52a0\u7075\u6d3b\u548c\u51c6\u786e\u5730\u64cd\u4f5c\u6570\u636e\u5e93\u63d0\u4f9b\u5e2e\u52a9\u3002<\/p>\n
\u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u6bd4\u8f83Oracle\u548cDB2\u6570\u636e\u5e93\u7684SQL\u64cd\u4f5c\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6570\u636e\u5e93\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n
\u6bd4\u8f83Oracle\u548cDB2\u6570\u636e\u5e93\u7684...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199996","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199996","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199996"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199996\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}