{"id":172579,"date":"2024-11-07T14:18:16","date_gmt":"2024-11-07T06:18:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/172579\/"},"modified":"2024-11-07T14:18:18","modified_gmt":"2024-11-07T06:18:18","slug":"%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8bdb2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%ad%97%e6%ae%b5%e7%9a%84ddl%ef%bc%9f-db2%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%97%e6%ae%b5ddl","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/172579\/","title":{"rendered":"\u5982\u4f55\u67e5\u770bDb2\u6578\u64da\u5eab\u4e2d\u5b57\u6bb5\u7684DDL\uff1f (Db2\u67e5\u770b\u6578\u64da\u5eab\u5b57\u6bb5ddl)"},"content":{"rendered":"

\u5982\u4f55\u67e5\u770bDb2\u6578\u64da\u5eab\u4e2d\u5b57\u6bb5\u7684DDL\uff1f (Db2\u67e5\u770b\u6578\u64da\u5eab\u5b57\u6bb5ddl)<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u4e86\u89e3\u6578\u64da\u8868\u7684\u7d50\u69cb\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5c0d\u65bc\u4f7f\u7528IBM Db2\u6578\u64da\u5eab\u7684\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u4f86\u8aaa\uff0c\u67e5\u770b\u5b57\u6bb5\u7684DDL\uff08\u6578\u64da\u5b9a\u7fa9\u8a9e\u8a00\uff09\u662f\u7372\u53d6\u8868\u7d50\u69cb\u4fe1\u606f\u7684\u6709\u6548\u65b9\u6cd5\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728Db2\u4e2d\u67e5\u770b\u6578\u64da\u5eab\u5b57\u6bb5\u7684DDL\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u6b65\u9a5f\u3002<\/p>\n

\u4ec0\u9ebc\u662fDDL\uff1f<\/h2>\n

DDL\uff08Data Definition Language\uff09\u662f\u7528\u65bc\u5b9a\u7fa9\u6578\u64da\u5eab\u7d50\u69cb\u7684\u8a9e\u8a00\uff0c\u5305\u62ec\u5275\u5efa\u3001\u4fee\u6539\u548c\u522a\u9664\u6578\u64da\u8868\u3001\u7d22\u5f15\u548c\u5176\u4ed6\u6578\u64da\u5eab\u5c0d\u8c61\u7684\u8a9e\u53e5\u3002\u5728Db2\u4e2d\uff0cDDL\u8a9e\u53e5\u901a\u5e38\u5305\u62ecCREATE\u3001ALTER\u548cDROP\u7b49\u547d\u4ee4\u3002\u901a\u904e\u67e5\u770bDDL\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4e86\u89e3\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u3001\u7d04\u675f\u689d\u4ef6\u53ca\u5176\u4ed6\u5c6c\u6027\u3002<\/p>\n

\u67e5\u770bDb2\u6578\u64da\u5eab\u5b57\u6bb5\u7684DDL<\/h2>\n

\u5728Db2\u4e2d\uff0c\u6709\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u67e5\u770b\u6578\u64da\u5eab\u4e2d\u5b57\u6bb5\u7684DDL\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528DESCRIBE\u547d\u4ee4<\/h3>\n

DESCRIBE\u547d\u4ee4\u53ef\u4ee5\u7528\u4f86\u67e5\u770b\u8868\u7684\u7d50\u69cb\uff0c\u5305\u62ec\u5b57\u6bb5\u7684\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u548c\u7d04\u675f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528DESCRIBE\u547d\u4ee4\u7684\u793a\u4f8b\uff1a<\/p>\n

DESCRIBE TABLE \u8868\u540d;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5982\u679c\u8981\u67e5\u770b\u540d\u70ba\u201cEMPLOYEE\u201d\u7684\u8868\u7684\u7d50\u69cb\uff0c\u53ef\u4ee5\u57f7\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
DESCRIBE TABLE EMPLOYEE;<\/code><\/pre>\n
2. \u4f7f\u7528SYSCAT.COLUMNS\u7cfb\u7d71\u76ee\u9304<\/h3>\n
Db2\u63d0\u4f9b\u4e86\u4e00\u500b\u7cfb\u7d71\u76ee\u9304\uff0c\u540d\u70baSYSCAT.COLUMNS\uff0c\u8a72\u76ee\u9304\u5305\u542b\u4e86\u6240\u6709\u8868\u7684\u5b57\u6bb5\u4fe1\u606f\u3002\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u9019\u500b\u76ee\u9304\u4f86\u7372\u53d6\u5b57\u6bb5\u7684DDL\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62SYSCAT.COLUMNS\u7684\u793a\u4f8b\uff1a<\/p>\n
SELECT COLNAME, TYPENAME, LENGTH, NULLS\nFROM SYSCAT.COLUMNS\nWHERE TABNAME = 'EMPLOYEE';<\/code><\/pre>\n
\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u201cEMPLOYEE\u201d\u8868\u4e2d\u6240\u6709\u5b57\u6bb5\u7684\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u3001\u9577\u5ea6\u548c\u662f\u5426\u5141\u8a31NULL\u503c\u7684\u4fe1\u606f\u3002<\/p>\n
3. \u4f7f\u7528GENERATE DDL\u547d\u4ee4<\/h3>\n
Db2\u9084\u63d0\u4f9b\u4e86\u4e00\u500b\u5f37\u5927\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u751f\u6210\u6574\u500b\u8868\u7684DDL\u8a9e\u53e5\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4f7f\u7528GENERATE DDL\u547d\u4ee4\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u751f\u6210\u201cEMPLOYEE\u201d\u8868DDL\u7684\u793a\u4f8b\uff1a<\/p>\n
CALL SYSPROC.ADMIN_GET_DDL('TABLE', 'EMPLOYEE');<\/code><\/pre>\n
\u9019\u500b\u547d\u4ee4\u5c07\u8fd4\u56de\u201cEMPLOYEE\u201d\u8868\u7684\u5b8c\u6574DDL\u8a9e\u53e5\uff0c\u5305\u62ec\u6240\u6709\u5b57\u6bb5\u7684\u5b9a\u7fa9\u548c\u7d04\u675f\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728Db2\u4e2d\u67e5\u770b\u6578\u64da\u5eab\u5b57\u6bb5\u7684DDL\u662f\u4e00\u500b\u91cd\u8981\u7684\u6280\u80fd\uff0c\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u7d50\u69cb\u3002\u901a\u904e\u4f7f\u7528DESCRIBE\u547d\u4ee4\u3001\u67e5\u8a62SYSCAT.COLUMNS\u7cfb\u7d71\u76ee\u9304\u6216\u4f7f\u7528GENERATE DDL\u547d\u4ee4\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u5de5\u4f5c\u6548\u7387\uff0c\u9084\u80fd\u5e6b\u52a9\u60a8\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u7dad\u8b77\u904e\u7a0b\u4e2d\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728Db2\u6578\u64da\u5eab\u4e2d\u67e5\u770b\u5b57\u6bb5\u7684DDL\uff0c\u638c\u63e1\u67e5\u8a62\u8a9e\u6cd5\u548c\u5de5\u5177\uff0c\u8f15\u9b06\u7372\u53d6\u7d50\u69cb\u4fe1\u606f\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-172579","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172579","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=172579"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172579\/revisions"}],"predecessor-version":[{"id":172580,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/172579\/revisions\/172580"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=172579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=172579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=172579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}