{"id":6452,"date":"2021-06-21T10:26:34","date_gmt":"2021-06-21T02:26:34","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=6452"},"modified":"2021-06-21T10:55:15","modified_gmt":"2021-06-21T02:55:15","slug":"gbase-8a%e5%87%bd%e6%95%b0find_in_set%e4%bd%bf%e7%94%a8%e6%a0%b7%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/6452","title":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a\u51fd\u6570find_in_set\u4f7f\u7528\u6837\u4f8b"},"content":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdGBase 8a\u5185\u7f6e\u51fd\u6570find_in_set\u7684\u4f7f\u7528\u65b9\u6cd5\u5e76\u63d0\u4f9b\u6837\u4f8b\u3002\u8be5\u51fd\u6570\u7528\u4e8e\u5728\u4e00\u4e2a\u9017\u53f7\u5206\u5272\u7684\u96c6\u5408\u4e2d\uff0c\u67e5\u627e\u6307\u5b9a\u7684\u503c\u662f\u5426\u5b58\u5728\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Directory Navigation<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2aea85a2f3f\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2aea85a2f3f\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.gbase8.cn\/en\/6452\/#%E5%8F%82%E8%80%83\" >\u53c2\u8003<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbase8.cn\/en\/6452\/#%E8%AF%AD%E6%B3%95\" >\u8bed\u6cd5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.gbase8.cn\/en\/6452\/#%E8%AF%B4%E6%98%8E\" >\u8bf4\u660e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.gbase8.cn\/en\/6452\/#%E6%A0%B7%E4%BE%8B\" >\u6837\u4f8b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.gbase8.cn\/en\/6452\/#%E6%99%AE%E9%80%9A%E6%9F%A5%E6%89%BE\" >\u666e\u901a\u67e5\u627e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.gbase8.cn\/en\/6452\/#%E6%9F%A5%E7%9C%8B%E9%80%97%E5%8F%B7\" >\u67e5\u770b\u9017\u53f7<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.gbase8.cn\/en\/6452\/#%E6%9F%A5%E6%89%BE%E4%B8%8D%E5%AD%98%E5%9C%A8%E7%9A%84\" >\u67e5\u627e\u4e0d\u5b58\u5728\u7684<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83\"><\/span>\u53c2\u8003<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><a href=\"https:\/\/www.gbase8.cn\/en\/2672\/\">GBase 8a\u5b57\u7b26\u4e32\u548c\u65e5\u671f\u51fd\u6570\u5217\u8868\u7d22\u5f15<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%AF%AD%E6%B3%95\"><\/span>\u8bed\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>FIND_IN_SET(str,strlist)<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%AF%B4%E6%98%8E\"><\/span>\u8bf4\u660e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u8fd4\u56de\u5b57\u7b26\u4e32 str \u5728 strlist \u4e2d\u5bf9\u5e94\u7684\u4f4d\u7f6e\uff0c\u4ee5\u9017\u53f7\u95f4\u7684\u5b57\u7b26\u4e32\u4e3a\u4e00\u4e2a\u5355\u5143\u3002\u8bf7\u6ce8\u610f\u533a\u5206\u8be5\u51fd\u6570\u548cinstr\u51fd\u6570\u7684\u533a\u522b\uff0cinstr\u662f\u4ee5\u5b57\u7b26\u4e3a\u5355\u4f4d\u7684\uff0c\u8fd9\u4e2a\u662f\u4ee5\u9017\u53f7\u95f4\u7684\u5185\u5bb9\u4e3a\u5355\u4f4d\u7684\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u53c2\u6570 strlist \u7531\u5b57\u7b26\u201c,\u201d\u5206\u9694\u7684\u591a\u4e2a\u5b50\u4e32\u7ec4\u6210\uff1b<\/li><li>\u5982\u679c\u5b57\u7b26\u4e32 str \u5728 strlist \u4e2d\uff0c\u5219\u8fd4\u56de\u5339\u914d\u7684\u4f4d\u7f6e\uff0c\u4ece 1 \u5f00\u59cb\uff1b<\/li><li>\u5982\u679c\u5b57\u7b26\u4e32 str\u4e0d\u5728 strlist \u4e2d\u6216\u8005 strlist \u662f\u4e00\u4e2a\u7a7a\u4e32\uff0c\u8fd4\u56de\u503c\u4e3a 0\uff1b<\/li><li>\u5982\u679c str \u4e3a NULL\uff0c\u8fd4\u56de\u503c\u4e3aNULL\uff0c\u4e0d\u80fd\u540c\u4efb\u4f55\u503c\u8fdb\u884c\u540c\u7b49\u6bd4\u8f83\uff1b<\/li><li>\u5982\u679cstr\u4e3a\u5206\u9694\u7b26\u9017\u53f7\uff0c\u540c\u6837\u8fd4\u56de0<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%B7%E4%BE%8B\"><\/span>\u6837\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%99%AE%E9%80%9A%E6%9F%A5%E6%89%BE\"><\/span>\u666e\u901a\u67e5\u627e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u8fd4\u56de\u7684\u662f\u5b57\u7b26\u4e32\u5728\u96c6\u5408\u4e2d\u51fa\u73b0\u7684\u7b2c\u51e0\u4e2a\uff0c\u6ce8\u610f\u4e0d\u662f\u5b57\u7b26\u4f4d\u7f6e\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; select find_in_set('b','a,b,c,d,e,f,g');\n+----------------------------------+\n| find_in_set('b','a,b,c,d,e,f,g') |\n+----------------------------------+\n|                                2 |\n+----------------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n\ngbase&gt; select find_in_set('a','a,b,c,d,e,f,g');\n+----------------------------------+\n| find_in_set('a','a,b,c,d,e,f,g') |\n+----------------------------------+\n|                                1 |\n+----------------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n\ngbase&gt; select find_in_set('f','a,b,c,d,e,f,g');\n+----------------------------------+\n| find_in_set('f','a,b,c,d,e,f,g') |\n+----------------------------------+\n|                                6 |\n+----------------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%9F%A5%E7%9C%8B%E9%80%97%E5%8F%B7\"><\/span>\u67e5\u770b\u9017\u53f7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; select find_in_set(',','a,b,c,d,e,f,g');\n+----------------------------------+\n| find_in_set(',','a,b,c,d,e,f,g') |\n+----------------------------------+\n|                                0 |\n+----------------------------------+\n1 row in set (Elapsed: 00:00:00.01)\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%9F%A5%E6%89%BE%E4%B8%8D%E5%AD%98%E5%9C%A8%E7%9A%84\"><\/span>\u67e5\u627e\u4e0d\u5b58\u5728\u7684<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u5982\u4e0b\u5728abc\u91cc\u67e5\u627eb, \u5982\u679c\u662finstr\u80af\u5b9a\u7b26\u5408\uff0c\u4f46find_in_set\u662f\u4ee5\u9017\u53f7\u95f4\u7684\u6240\u6709\u5b57\u7b26\u4e3a\u5355\u4f4d\uff0c\u6240\u4ee5\u6ca1\u627e\u5230\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; select find_in_set('b','abc');\n+------------------------+\n| find_in_set('b','abc') |\n+------------------------+\n|                      0 |\n+------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n<\/code><\/pre>","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdGBase 8a\u5185\u7f6e\u51fd\u6570find_in_set\u7684\u4f7f\u7528\u65b9\u6cd5\u5e76\u63d0\u4f9b\u6837\u4f8b\u3002\u8be5\u51fd\u6570\u7528\u4e8e\u5728\u4e00\u4e2a\u9017\u53f7\u5206\u5272\u7684\u96c6\u5408\u4e2d\uff0c\u67e5\u627e\u6307\u5b9a\u7684\u503c\u662f\u5426\u5b58\u5728<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[36],"class_list":["post-6452","post","type-post","status-publish","format-standard","hentry","category-gbase8a","tag-36"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/6452","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=6452"}],"version-history":[{"count":4,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/6452\/revisions"}],"predecessor-version":[{"id":6478,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/6452\/revisions\/6478"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=6452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=6452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=6452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}