{"id":2851,"date":"2015-09-11T16:04:29","date_gmt":"2015-09-11T08:04:29","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=2851"},"modified":"2015-11-12T09:06:55","modified_gmt":"2015-11-12T01:06:55","slug":"qdb-qdb-%e6%96%b0%e5%a2%9e-tqsqlconverter-%e7%9a%84%e5%ad%90%e7%b1%bb%e6%9d%a5%e7%94%9f%e6%88%90%e6%9b%b4%e6%96%b0-sql-%e8%84%9a%e6%9c%ac","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=2851","title":{"rendered":"[QDB] QDB \u65b0\u589e TQSQLConverter \u7684\u5b50\u7c7b\u6765\u751f\u6210\u66f4\u65b0 SQL \u811a\u672c"},"content":{"rendered":"<p>\u3010\u6ce8\u3011 TQSQLConverter \u65b0\u589e\u4e86\u591a\u4e2a\u5c5e\u6027\uff0c\u5177\u4f53\u53c2\u8003\uff1a<a href=\"https:\/\/blog.qdac.cc\/?p=2912\">[QDB] \u66f4\u65b0-TQSQLConverter \u65b0\u589e\u591a\u4e2a\u5c5e\u6027<\/a><\/p>\n<p>\u53d7\u5236\u4e8e\u4e2a\u4eba\u7684\u65f6\u95f4\u548c\u7cbe\u529b\uff0cQDB \u7684\u76f4\u8fde\u7684 Provider \u76ee\u524d\u8fdb\u5c55\u5e76\u4e0d\u5982\u4eba\u610f\u3002\u90a3\u4e48\u5728\u6ca1\u6709 Provider \u7684\u60c5\u51b5\u4e0b\uff0c\u96be\u9053\u5c31\u6ca1\u6709\u529e\u6cd5\u7ed3\u5408 QDB \u548c\u73b0\u6709\u7684\u6570\u636e\u5e93\u7ec4\u4ef6\u6765\u4f7f\u7528\u4e86\u5417\uff1f\u5f53\u7136\u4e0d\u662f\uff0cQDB \u4e3a\u6b64\u5728 qconverter_sql \u5355\u5143\u589e\u52a0\u4e86\u4e00\u4e2a\u5bfc\u51fa\u8f6c\u6362\u5668\u7c7b TQSQLConverter \uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u5b83\u7684\u5b50\u7c7b\u6765\u5b8c\u6210\u5bf9 QDB \u672a\u63d0\u4f9b\u652f\u6301\u7684\u6570\u636e\u5e93\u7684\u652f\u6301\u3002<\/p>\n<p>TQSQLConverter \u00a0\u76ee\u524d\u7ee7\u627f\u5b9e\u73b0\u4e86\u4ee5\u4e0b\u4e09\u4e2a\u5b50\u7c7b\uff1a<\/p>\n<ul>\n<li>TQMSSQLConverter<br \/>\n\u7528\u4e8e\u751f\u6210 MSSQL \u7684\u66f4\u65b0\u811a\u672c<\/li>\n<li>TQPgSQLConverter<br \/>\n\u7528\u4e8e\u751f\u6210 PostgreSQL \u7684\u66f4\u65b0\u811a\u672c<\/li>\n<li>TQMySQLConverter<br \/>\n\u7528\u4e8e\u751f\u6210 MySQL \u7684\u66f4\u65b0\u811a\u672c<\/li>\n<\/ul>\n<p>\u4e0a\u9762\u5439\u5b8c\u4e86\uff0c\u54b1\u4eec\u4ee5TQDataSet + ADO \u6765\u5b8c\u6210\u5bf9 MSSQL \u7684\u652f\u6301\u7684\u6f14\u793a\u7a0b\u5e8f\u3002<\/p>\n<ol>\n<li>\u653e\u4e0a\u53bb\u4e00\u4e2a TADOConnection \u5bf9\u8c61\u5047\u8bbe\u540d\u4e3adc1\uff0c\u4e00\u4e2a TADODataSet \u5bf9\u8c61\u5047\u8bbe\u540d\u4e3ads1\uff0c\u7136\u540e\u5efa\u7acb\u4e24\u8005\u4e4b\u95f4\u7684\u5173\u8054\u5e76\u8fde\u63a5\u5230\u6570\u636e\u5e93\uff0c\u7136\u540e\u8ba9 ds1 \u53d6\u51fa\u9700\u8981\u7684\u8bb0\u5f55\uff08\u6b64\u5904\u7701\u7565\u5177\u4f53\u7684\u6b65\u9aa4\u8bbe\u5b9a\uff09\u3002<\/li>\n<li>\u653e\u4e00\u4e2a TQDataSet \u5bf9\u8c61\uff0c\u5047\u8bbe\u540d\u4e3aqds1\u3002\u6211\u4eec\u7f16\u5199\u5982\u4e0b\u4ee3\u7801\uff1a\n<pre class=\"lang:delphi decode:true\">qds1.CopyFrom(ds1);<\/pre>\n<\/li>\n<li>\u5728\u754c\u9762\u4e0a\u653e\u7f6e\u4e00\u4e2a\u6570\u636e\u611f\u77e5\u63a7\u4ef6\uff0c\u5982\u8868\u683c\u5565\u7684\uff0c\u7528\u6765\u5173\u8054\u5230 qds1 \u6765\u5173\u8054\u4fee\u6539\u6570\u636e\u3002<\/li>\n<li>\u4fee\u6539\u5b8c\u6210\u65f6\uff0c\u6211\u4eec\u8981\u63d0\u4ea4\u53d8\u66f4\u7684\u6570\u636e\u5185\u5bb9\u5230\u6570\u636e\u5e93\u65f6\uff0c\u6211\u4eec\u521b\u5efa\u4e00\u4e2a TQMSSQLConverter \u7684\u5b9e\u4f8b\uff0c\u5047\u8bbe\u4e3a msc\uff0c\u5219\u4f7f\u7528\u4e0b\u9762\u7684\u4ee3\u7801\u5173\u8054\u5230\u6570\u636e\u96c6\u5bf9\u8c61\uff1a\n<pre class=\"lang:delphi decode:true\">msc.DataSet:=qds1;\r\n<\/pre>\n<\/li>\n<li>\u6211\u4eec\u8c03\u7528\u8fde\u63a5\u5bf9\u8c61 dc \u7684 Execute \u65b9\u6cd5\u6765\u66f4\u65b0\u6570\u636e\u5230\u6570\u636e\u5e93\uff1a\n<pre class=\"lang:delphi decode:true\">dc.Execute(msc.SQL,AffectRows);<\/pre>\n<p>\u6ce8\u610f\uff0c\u5728\u66f4\u65b0\u4e4b\u524d\uff0c\u6709\u4e00\u9879\u5de5\u4f5c\u6211\u4eec\u9700\u8981\u505a\uff0c\u901a\u8fc7\u8bbe\u7f6e qds1 \u4e2d FieldDefs \u7684\u6bcf\u4e2a\u5b57\u6bb5\u7684\u539f\u59cb\u5b9a\u4e49\u4fe1\u606f\uff0c\u6765\u4fdd\u8bc1\u5176\u80fd\u591f\u6b63\u786e\u751f\u6210\u76f8\u5173\u7684 SQL \u811a\u672c\u3002<\/li>\n<li>\u5982\u679c\u4e0a\u9762\u6267\u884c\u6210\u529f\uff0c\u5219\u6570\u636e\u5c31\u4f1a\u5df2\u7ecf\u63d0\u4ea4\u5230\u6570\u636e\u5e93\u4e2d\uff0c\u6211\u4eec\u63a5\u4e0b\u6765\u8c03\u7528 qds1.ApplyChanges \u6765\u5e94\u7528\u672c\u5730\u66f4\u65b0\u3002\u5f53\u7136\uff0c\u5982\u679c\u6709\u5e26\u6709\u9ed8\u8ba4\u503c\u6216\u81ea\u589e\u7684\u5b57\u6bb5\uff0c\u5219\u9700\u8981\u91cd\u65b0\u6267\u884c\u7b2c 2 \u6b65\u6765\u5237\u65b0\u6570\u636e\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u6ce8\u3011 TQSQLConverter \u65b0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[69,8,9,66],"tags":[461,188],"class_list":["post-2851","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","category-qdac","category-qdb","tag-461","tag-188"],"views":5226,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2851","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2851"}],"version-history":[{"count":3,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2851\/revisions"}],"predecessor-version":[{"id":3064,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/2851\/revisions\/3064"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2851"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}