{"id":60681,"date":"2024-10-13T04:55:14","date_gmt":"2024-10-12T20:55:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60681\/"},"modified":"2024-10-13T04:55:14","modified_gmt":"2024-10-12T20:55:14","slug":"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e5%bf%85%e9%a0%88%e6%8e%8c%e6%8f%a1%e7%9a%84%e5%b8%b8%e7%94%a8%e8%aa%9e%e5%8f%a5%ef%bc%88%e4%b8%80%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60681\/","title":{"rendered":"DB2\u6578\u64da\u5eab\u5fc5\u9808\u638c\u63e1\u7684\u5e38\u7528\u8a9e\u53e5\uff08\u4e00\uff09"},"content":{"rendered":"

DB2\u6578\u64da\u5eab\u5fc5\u9808\u638c\u63e1\u7684\u5e38\u7528\u8a9e\u53e5\uff08\u4e00\uff09<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002IBM\u7684DB2\u6578\u64da\u5eab\u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u4f01\u696d\u7d1a\u61c9\u7528\u4e2d\u3002\u638c\u63e1DB2\u7684\u5e38\u7528\u8a9e\u53e5\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u64cd\u4f5c\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e00\u4e9b\u57fa\u672c\u7684DB2\u8a9e\u53e5\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528\u9019\u4e00\u6578\u64da\u5eab\u7cfb\u7d71\u3002<\/p>\n

1. \u57fa\u672c\u67e5\u8a62\u8a9e\u53e5<\/h2>\n

\u67e5\u8a62\u6578\u64da\u662f\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u6700\u5e38\u898b\u7684\u4efb\u52d9\u4e4b\u4e00\u3002DB2\u4f7f\u7528SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u4f86\u57f7\u884c\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u67e5\u8a62\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n

SELECT * FROM \u8868\u540d;<\/code><\/pre>\n
\u9019\u689d\u8a9e\u53e5\u5c07\u5f9e\u6307\u5b9a\u7684\u8868\u4e2d\u9078\u64c7\u6240\u6709\u5217\u7684\u6240\u6709\u884c\u3002\u82e5\u53ea\u9700\u9078\u64c7\u7279\u5b9a\u7684\u5217\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
SELECT \u52171, \u52172 FROM \u8868\u540d;<\/code><\/pre>\n
1.1 \u4f7f\u7528\u689d\u4ef6\u67e5\u8a62<\/h3>\n
\u5728\u67e5\u8a62\u4e2d\u6dfb\u52a0\u689d\u4ef6\u53ef\u4ee5\u904e\u6ffe\u51fa\u6240\u9700\u7684\u6578\u64da\u3002\u4f7f\u7528WHERE\u5b50\u53e5\u4f86\u6307\u5b9a\u689d\u4ef6\uff1a<\/p>\n
SELECT * FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u67e5\u8a62\u5e74\u9f61\u5927\u65bc30\u7684\u7528\u6236\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
SELECT * FROM \u7528\u6236 WHERE \u5e74\u9f61 > 30;<\/code><\/pre>\n
2. \u6578\u64da\u63d2\u5165\u8a9e\u53e5<\/h2>\n
\u5728DB2\u4e2d\uff0c\u63d2\u5165\u6578\u64da\u4f7f\u7528INSERT INTO\u8a9e\u53e5\u3002\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
INSERT INTO \u8868\u540d (\u52171, \u52172) VALUES (\u503c1, \u503c2);<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u5411\u7528\u6236\u8868\u4e2d\u63d2\u5165\u4e00\u689d\u65b0\u8a18\u9304\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
INSERT INTO \u7528\u6236 (\u59d3\u540d, \u5e74\u9f61) VALUES ('\u5f35\u4e09', 28);<\/code><\/pre>\n
3. \u6578\u64da\u66f4\u65b0\u8a9e\u53e5<\/h2>\n
\u66f4\u65b0\u73fe\u6709\u6578\u64da\u4f7f\u7528UPDATE\u8a9e\u53e5\u3002\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
UPDATE \u8868\u540d SET \u52171 = \u503c1 WHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u5c07\u7528\u6236\u7684\u5e74\u9f61\u66f4\u65b0\u70ba30\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
UPDATE \u7528\u6236 SET \u5e74\u9f61 = 30 WHERE \u59d3\u540d = '\u5f35\u4e09';<\/code><\/pre>\n
4. \u6578\u64da\u522a\u9664\u8a9e\u53e5<\/h2>\n
\u522a\u9664\u6578\u64da\u4f7f\u7528DELETE\u8a9e\u53e5\u3002\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n
DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664\u5e74\u9f61\u5c0f\u65bc20\u7684\u7528\u6236\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
DELETE FROM \u7528\u6236 WHERE \u5e74\u9f61 < 20;<\/code><\/pre>\n
5. \u6578\u64da\u5eab\u7d50\u69cb\u64cd\u4f5c\u8a9e\u53e5<\/h2>\n
\u9664\u4e86\u57fa\u672c\u7684\u6578\u64da\u64cd\u4f5c\uff0cDB2\u9084\u63d0\u4f9b\u4e86\u591a\u7a2e\u8a9e\u53e5\u4f86\u7ba1\u7406\u6578\u64da\u5eab\u7d50\u69cb\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u7d50\u69cb\u64cd\u4f5c\u8a9e\u53e5\uff1a<\/p>\n
5.1 \u5275\u5efa\u8868<\/h3>\n
CREATE TABLE \u8868\u540d (\u52171 \u6578\u64da\u985e\u578b, \u52172 \u6578\u64da\u985e\u578b);<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5275\u5efa\u4e00\u500b\u7528\u6236\u8868\uff1a<\/p>\n
CREATE TABLE \u7528\u6236 (ID INT PRIMARY KEY, \u59d3\u540d VARCHAR(100), \u5e74\u9f61 INT);<\/code><\/pre>\n
5.2 \u522a\u9664\u8868<\/h3>\n
DROP TABLE \u8868\u540d;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u522a\u9664\u7528\u6236\u8868\uff1a<\/p>\n
DROP TABLE \u7528\u6236;<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u638c\u63e1DB2\u6578\u64da\u5eab\u7684\u57fa\u672c\u8a9e\u53e5\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u64cd\u4f5c\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u4ecb\u7d39\u4e86\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u3001\u522a\u9664\u4ee5\u53ca\u6578\u64da\u5eab\u7d50\u69cb\u64cd\u4f5c\u7684\u57fa\u672c\u8a9e\u53e5\uff0c\u9019\u4e9b\u90fd\u662f\u65e5\u5e38\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u90e8\u5206\u3002\u96a8\u8457\u5c0dDB2\u7684\u6df1\u5165\u4e86\u89e3\uff0c\u60a8\u5c07\u80fd\u5920\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f \u4e91\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22DB2\u6578\u64da\u5eab\u7684\u5fc5\u5099\u5e38\u7528\u8a9e\u53e5\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u638c\u63e1\u57fa\u790e\u64cd\u4f5c\u6280\u5de7\uff0c\u52a9\u4f60\u8f15\u9b06\u61c9\u5c0d\u6578\u64da\u6311\u6230\u3002<\/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-60681","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60681","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=60681"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60681\/revisions"}],"predecessor-version":[{"id":60682,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60681\/revisions\/60682"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}