{"id":5695,"date":"2024-11-14T08:25:28","date_gmt":"2024-11-14T00:25:28","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5695\/"},"modified":"2024-11-14T08:25:28","modified_gmt":"2024-11-14T00:25:28","slug":"sql%e8%a7%a6%e5%8f%91%e5%99%a8%e6%80%8e%e4%b9%88%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5695\/","title":{"rendered":"sql\u89e6\u53d1\u5668\u600e\u4e48\u7528"},"content":{"rendered":"<blockquote><p>\n  sql \u89e6\u53d1\u5668\u662f\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u7528\u4e8e\u5728\u7279\u5b9a\u4e8b\u4ef6\uff08\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u53d1\u751f\u65f6\u6267\u884c\u4e00\u7cfb\u5217\u52a8\u4f5c\u3002\u5176\u7528\u9014\u5305\u62ec\uff1a\u5f3a\u5236\u6267\u884c\u4e1a\u52a1\u89c4\u5219\u81ea\u52a8\u6267\u884c\u4efb\u52a1\u5b9e\u73b0\u7ea7\u8054\u66f4\u65b0\u6216\u5220\u9664\u5ba1\u8ba1\u6570\u636e\u66f4\u6539\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/30\/2024053020513770476.jpg\" class=\"aligncenter\" title=\"sql\u89e6\u53d1\u5668\u600e\u4e48\u7528\u63d2\u56fe\" alt=\"sql\u89e6\u53d1\u5668\u600e\u4e48\u7528\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u89e6\u53d1\u5668\u7684\u7528\u9014<\/strong><\/p>\n<p>SQL \u89e6\u53d1\u5668\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5f53\u6570\u636e\u5e93\u4e2d\u7684\u7279\u5b9a\u8868\uff08\u6216\u89c6\u56fe\uff09\u53d1\u751f\u7279\u5b9a\u4e8b\u4ef6\uff08\u5982\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\uff09\u65f6\u6267\u884c\u4e00\u7cfb\u5217\u52a8\u4f5c\u3002\u89e6\u53d1\u5668\u4e3b\u8981\u7528\u4e8e\uff1a<\/p>\n<ul>\n<li> <strong>\u5f3a\u5236\u6267\u884c\u4e1a\u52a1\u89c4\u5219\uff1a<\/strong>\u786e\u4fdd\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u6ee1\u8db3\u67d0\u4e9b\u6761\u4ef6\uff0c\u4f8b\u5982\u552f\u4e00\u6027\u6216\u5b8c\u6574\u6027\u7ea6\u675f\u3002<\/li>\n<li> <strong>\u81ea\u52a8\u6267\u884c\u4efb\u52a1\uff1a<\/strong>\u81ea\u52a8\u5316\u4e0e\u6570\u636e\u64cd\u4f5c\u76f8\u5173\u7684\u4e00\u7cfb\u5217\u4efb\u52a1\uff0c\u4f8b\u5982\u521b\u5efa\u6216\u66f4\u65b0\u76f8\u5173\u8868\u4e2d\u7684\u8bb0\u5f55\u3002<\/li>\n<li> <strong>\u5b9e\u73b0\u7ea7\u8054\u66f4\u65b0\u6216\u5220\u9664\uff1a<\/strong>\u5f53\u4e3b\u8868\u4e2d\u7684\u8bb0\u5f55\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u81ea\u52a8\u66f4\u65b0\u6216\u5220\u9664\u76f8\u5173\u5b50\u8868\u4e2d\u7684\u8bb0\u5f55\u3002<\/li>\n<li> <strong>\u5ba1\u8ba1\u6570\u636e\u66f4\u6539\uff1a<\/strong>\u8bb0\u5f55\u5bf9\u6570\u636e\u5e93\u4e2d\u7279\u5b9a\u8868\u7684\u66f4\u6539\uff0c\u4fbf\u4e8e\u8ddf\u8e2a\u548c\u5206\u6790\u6570\u636e\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p><strong>\u89e6\u53d1\u5668\u7684\u7ed3\u6784<\/strong><\/p>\n<p>\u4e00\u4e2a SQL \u89e6\u53d1\u5668\u901a\u5e38\u5305\u542b\u4ee5\u4e0b\u90e8\u5206\uff1a<\/p>\n<ul>\n<li> <strong>\u89e6\u53d1\u5668\u540d\u79f0\uff1a<\/strong>\u4e3a\u89e6\u53d1\u5668\u6307\u5b9a\u7684\u552f\u4e00\u540d\u79f0\u3002<\/li>\n<li> <strong>\u4e8b\u4ef6\u7c7b\u578b\uff1a<\/strong>\u89e6\u53d1\u5668\u6267\u884c\u7684\u4e8b\u4ef6\u7c7b\u578b\uff08\u4f8b\u5982 AFTER INSERT\uff09\u3002<\/li>\n<li> <strong>\u89e6\u53d1\u5668\u8868\uff1a<\/strong>\u89e6\u53d1\u5668\u6240\u9644\u52a0\u7684\u8868\u3002<\/li>\n<li> <strong>\u6761\u4ef6\uff1a<\/strong>\u89e6\u53d1\u5668\u53ea\u5728\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\u6267\u884c\u7684\u53ef\u9009\u6761\u4ef6\u3002<\/li>\n<li> <strong>\u52a8\u4f5c\uff1a<\/strong>\u89e6\u53d1\u5668\u6267\u884c\u7684\u4e00\u7cfb\u5217 SQL \u8bed\u53e5\u3002<\/li>\n<\/ul>\n<p><strong>\u89e6\u53d1\u5668\u7684\u4f7f\u7528\u793a\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u89e6\u53d1\u5668\uff0c\u7528\u4e8e\u5728\u8868 Customers \u4e2d\u63d2\u5165\u65b0\u8bb0\u5f55\u65f6\u81ea\u52a8\u521b\u5efa\u4e00\u4e2a\u8d26\u6237\uff1a<\/p>\n<pre>CREATE TRIGGER Account_AutoCreation\nAFTER INSERT ON Customers\nAS\nBEGIN\n  INSERT INTO Accounts (customer_id, balance)\n  VALUES (new.id, 0);\nEND;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5f53\u8868 Customers \u4e2d\u63d2\u5165\u4e00\u6761\u65b0\u8bb0\u5f55\u65f6\uff0c\u6b64\u89e6\u53d1\u5668\u5c06\u81ea\u52a8\u5728\u8868 Accounts \u4e2d\u521b\u5efa\u4e00\u6761\u65b0\u7684\u8d26\u6237\u8bb0\u5f55\uff0c\u5176 customer_id \u4e0e\u63d2\u5165\u7684\u5ba2\u6237\u8bb0\u5f55\u7684 id \u76f8\u540c\uff0c\u8d26\u6237\u4f59\u989d\u4e3a 0\u3002<\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>\u89e6\u53d1\u5668\u4f1a\u5f71\u54cd\u8868\u7684\u6027\u80fd\uff0c\u56e0\u6b64\u5e94\u8c28\u614e\u4f7f\u7528\u3002<\/li>\n<li>\u907f\u514d\u5728\u89e6\u53d1\u5668\u4e2d\u6267\u884c\u590d\u6742\u6216\u8017\u65f6\u7684\u64cd\u4f5c\u3002<\/li>\n<li>\u521b\u5efa\u89e6\u53d1\u5668\u540e\u8981\u5bf9\u5176\u8fdb\u884c\u6d4b\u8bd5\uff0c\u4ee5\u786e\u4fdd\u5176\u6309\u9884\u671f\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u89e6\u53d1\u5668\u600e\u4e48\u7528\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>sql \u89e6\u53d1\u5668\u662f\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u7528\u4e8e\u5728\u7279\u5b9a\u4e8b\u4ef6\uff08\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u53d1\u751f\u65f6\u6267\u884c\u4e00\u7cfb\u5217\u52a8\u4f5c\u3002\u5176\u7528\u9014\u5305\u62ec\uff1a\u5f3a\u5236\u6267\u884c\u4e1a\u52a1\u89c4\u5219\u81ea\u52a8\u6267\u884c\u4efb\u52a1\u5b9e\u73b0\u7ea7\u8054\u66f4\u65b0\u6216\u5220\u9664\u5ba1\u8ba1\u6570\u636e\u66f4\u6539 SQL \u89e6\u53d1\u5668\u7684\u7528\u9014 SQL \u89e6\u53d1\u5668\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5f53\u6570\u636e\u5e93\u4e2d\u7684\u7279\u5b9a\u8868\uff08\u6216\u89c6\u56fe\uff09\u53d1\u751f\u7279\u5b9a\u4e8b\u4ef6\uff08\u5982\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\uff09\u65f6\u6267\u884c\u4e00\u7cfb\u5217\u52a8\u4f5c\u3002\u89e6\u53d1\u5668\u4e3b\u8981\u7528\u4e8e\uff1a \u5f3a\u5236\u6267\u884c\u4e1a\u52a1\u89c4\u5219\uff1a\u786e\u4fdd\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u6ee1\u8db3\u67d0\u4e9b\u6761\u4ef6\uff0c\u4f8b\u5982\u552f\u4e00\u6027\u6216\u5b8c\u6574\u6027\u7ea6\u675f\u3002 \u81ea\u52a8\u6267\u884c\u4efb\u52a1\uff1a\u81ea\u52a8\u5316\u4e0e\u6570\u636e\u64cd\u4f5c\u76f8\u5173\u7684\u4e00\u7cfb\u5217\u4efb\u52a1\uff0c\u4f8b\u5982\u521b\u5efa\u6216\u66f4\u65b0\u76f8\u5173\u8868\u4e2d\u7684\u8bb0\u5f55\u3002 \u5b9e\u73b0\u7ea7\u8054\u66f4\u65b0\u6216\u5220\u9664\uff1a\u5f53\u4e3b\u8868\u4e2d\u7684\u8bb0\u5f55\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u81ea\u52a8\u66f4\u65b0\u6216\u5220\u9664\u76f8\u5173\u5b50\u8868\u4e2d\u7684\u8bb0\u5f55\u3002 \u5ba1\u8ba1\u6570\u636e\u66f4\u6539\uff1a\u8bb0\u5f55\u5bf9\u6570\u636e\u5e93\u4e2d\u7279\u5b9a\u8868\u7684\u66f4\u6539\uff0c\u4fbf\u4e8e\u8ddf\u8e2a\u548c\u5206\u6790\u6570\u636e\u64cd\u4f5c\u3002 \u89e6\u53d1\u5668\u7684\u7ed3\u6784 \u4e00\u4e2a SQL \u89e6\u53d1\u5668\u901a\u5e38\u5305\u542b\u4ee5\u4e0b\u90e8\u5206\uff1a \u89e6\u53d1\u5668\u540d\u79f0\uff1a\u4e3a\u89e6\u53d1\u5668\u6307\u5b9a\u7684\u552f\u4e00\u540d\u79f0\u3002 \u4e8b\u4ef6\u7c7b\u578b\uff1a\u89e6\u53d1\u5668\u6267\u884c\u7684\u4e8b\u4ef6\u7c7b\u578b\uff08\u4f8b\u5982 AFTER INSERT\uff09\u3002 \u89e6\u53d1\u5668\u8868\uff1a\u89e6\u53d1\u5668\u6240\u9644\u52a0\u7684\u8868\u3002 \u6761\u4ef6\uff1a\u89e6\u53d1\u5668\u53ea\u5728\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u65f6\u6267\u884c\u7684\u53ef\u9009\u6761\u4ef6\u3002 \u52a8\u4f5c\uff1a\u89e6\u53d1\u5668\u6267\u884c\u7684\u4e00\u7cfb\u5217 SQL \u8bed\u53e5\u3002 \u89e6\u53d1\u5668\u7684\u4f7f\u7528\u793a\u4f8b \u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u89e6\u53d1\u5668\uff0c\u7528\u4e8e\u5728\u8868 Customers \u4e2d\u63d2\u5165\u65b0\u8bb0\u5f55\u65f6\u81ea\u52a8\u521b\u5efa\u4e00\u4e2a\u8d26\u6237\uff1a CREATE TRIGGER Account_AutoCreation AFTER INSERT ON Customers AS BEGIN INSERT INTO Accounts (customer_id, balance) VALUES (new.id, 0); END; \u767b\u5f55\u540e\u590d\u5236 \u5f53\u8868 Customers \u4e2d\u63d2\u5165\u4e00\u6761\u65b0\u8bb0\u5f55\u65f6\uff0c\u6b64\u89e6\u53d1\u5668\u5c06\u81ea\u52a8\u5728\u8868 Accounts \u4e2d\u521b\u5efa\u4e00\u6761\u65b0\u7684\u8d26\u6237\u8bb0\u5f55\uff0c\u5176 customer_id \u4e0e\u63d2\u5165\u7684\u5ba2\u6237\u8bb0\u5f55\u7684 id \u76f8\u540c\uff0c\u8d26\u6237\u4f59\u989d\u4e3a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5695","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5695"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5695\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5695"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}