{"id":3145,"date":"2021-01-08T09:07:11","date_gmt":"2021-01-08T01:07:11","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=3145"},"modified":"2021-01-08T09:07:12","modified_gmt":"2021-01-08T01:07:12","slug":"gbase-8a%e5%8a%a8%e6%80%81%e6%89%a7%e8%a1%8csql%e9%87%8c%e7%9a%84%e6%95%b0%e6%8d%ae%e5%a6%82%e4%bd%95%e8%bf%94%e5%9b%9e%e8%b0%83%e7%94%a8%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/3145","title":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a\u52a8\u6001\u6267\u884cSQL\u91cc\u7684\u6570\u636e\u5982\u4f55\u8fd4\u56de\u8c03\u7528\u65b9"},"content":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdGBase 8a\u7684\u5b9e\u73b0\u4ece\u52a8\u6001\u6267\u884c\u7684SQL\u91cc\uff0c\u7528session\u53d8\u91cf\u6765\u8fd4\u56de\u6570\u636e\u7684\u65b9\u6cd5\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-6a2aadb4a1e2d\" 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 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id=\"session%E5%8F%98%E9%87%8F\"><\/span>session\u53d8\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u7528@\u5f00\u5934\u7684\u53d8\u91cf\uff0c\u662fsession\u7ea7\u7684\u53d8\u91cf\uff0c\u53ea\u6709\u5f53\u524dsession\u53ef\u89c1\u3002\u53ef\u4ee5\u89c4\u907f\u5e76\u53d1\u51b2\u7a81\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8A%A8%E6%80%81SQL%E4%BB%A3%E7%A0%81\"><\/span>\u52a8\u6001SQL\u4ee3\u7801<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5982\u4e0bSQL\u662f\u6837\u4f8b\uff0c\u4e00\u822c\u90fd\u662fconcat\u62fc\u88c5\u7684,\u6240\u4ee5\u53ea\u80fd\u52a8\u6001\u6267\u884c\uff0c\u5176\u4e2d\u9700\u8981\u8fd4\u56de\u7684\u6570\u636e\u901a\u8fc7@out_str\u8fd4\u56de\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@str=concat('select now() into @out_str from ',v_table_name,' limit 1');<\/code><\/pre>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%AD%98%E5%82%A8%E8%BF%87%E7%A8%8B%E6%A0%B7%E4%BE%8B\"><\/span>\u5b58\u50a8\u8fc7\u7a0b\u6837\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>drop procedure if exists p_test;\r\ndelimiter \/\/\r\ncreate procedure p_test()\r\nbegin\r\n    DECLARE v_sql_string varchar(1000);\r\n    set v_sql_string =  'select now() into @out_str';\r\n\r\n    set @sql_str_exec = v_sql_string;\r\n    prepare stmt_exesql from @sql_str_exec;\r\n    execute stmt_exesql;\r\n    select @out_str;\r\nend\/\/\r\ndelimiter ;\r\ncall p_test();\r\nselect @out_str;<\/code><\/pre>","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdGBase 8a\u7684\u5b9e\u73b0\u4ece\u52a8\u6001\u6267\u884c\u7684SQL\u91cc\uff0c\u7528session\u53d8\u91cf\u6765\u8fd4\u56de\u6570\u636e\u7684\u65b9\u6cd5<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-3145","post","type-post","status-publish","format-standard","hentry","category-gbase8a"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3145","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=3145"}],"version-history":[{"count":2,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3145\/revisions"}],"predecessor-version":[{"id":3147,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3145\/revisions\/3147"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=3145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=3145"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=3145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}