{"id":2655,"date":"2020-12-30T16:08:28","date_gmt":"2020-12-30T08:08:28","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=2655"},"modified":"2020-12-30T16:08:29","modified_gmt":"2020-12-30T08:08:29","slug":"gbase-8a%e6%94%af%e6%8c%81%e5%85%a8%e8%a7%92%e5%ad%97%e7%ac%a6%e8%bd%ac%e5%8d%8a%e8%a7%92%e7%9a%84to_single_byte%e5%87%bd%e6%95%b0%e4%bd%bf%e7%94%a8%e4%be%8b%e5%ad%90","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/2655","title":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a\u652f\u6301\u5168\u89d2\u5b57\u7b26\u8f6c\u534a\u89d2\u7684to_single_byte\u51fd\u6570\u4f7f\u7528\u4f8b\u5b50"},"content":{"rendered":"\n<p>\u4e2d\u6587\u5bf9\u5404\u79cd\u5b57\u7b26\u548c\u5b57\u6bcd\uff0c\u6570\u5b57\u7b49\u90fd\u6709\u5168\u89d2\u6a21\u5f0f\uff0cGBase 8a\u6570\u636e\u5e93\u96c6\u7fa4\u63d0\u4f9b\u4e86to_single_byte\u51fd\u6570\uff0c\u5c06\u5168\u89d2\u5b57\u7b26\u8f6c\u5316\u4e3a\u534a\u89d2\u5b57\u7b26\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\">\u76ee\u5f55\u5bfc\u822a<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2aea67a309e\" 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-6a2aea67a309e\"  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\/2655\/#%E5%87%BD%E6%95%B0\" >\u51fd\u6570<\/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\/2655\/#%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-3\" href=\"https:\/\/www.gbase8.cn\/en\/2655\/#%E6%A0%B7%E4%BE%8B\" >\u6837\u4f8b<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%87%BD%E6%95%B0\"><\/span>\u51fd\u6570<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>TO_SINGLE_BYTE(arg)<\/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>\u5c06\u4f20\u5165\u7684 arg \u4ece\u5168\u89d2\u5b57\u7b26\u8f6c\u534a\u89d2\u5b57\u7b26\u3002arg \u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b\u7684\u503c\u548c\u5217\uff0c\u5982\u679c arg \u4e3a\u5b57\u7b26\u4e32\uff0c\u5e76\u4e14\u5b57\u7b26\u4e32\u91cc\u9762\u542b\u6709\u5168\u89d2\u7684\u8bdd\uff0c\u5728\u8f93\u51fa\u7ed3\u679c\u4e2d\u5c31\u4f1a\u5c06\u5168\u89d2\u5b57\u7b26\u8f6c\u4e3a\u534a\u89d2\u5b57\u7b26\uff0c\u5176\u4ed6\u5b57\u7b26\u4fdd\u6301\u4e0d\u53d8\u3002<br>\u8be5\u51fd\u6570\u4ec5\u5728 UTF8 \u5b57\u7b26\u96c6\u548c GBK \u5b57\u7b26\u96c6\u4e0b\u6709\u6548\u3002<\/p>\n\n\n\n<p>\u5f53\u524d\u4ec5 95 \u4e2a\u5b57\u7b26\u652f\u6301\u5168\u89d2\u8f6c\u534a\u89d2\u3002<\/p>\n\n\n\n<p>95 \u4e2a\u5b57\u7b26\u5982\u4e0b\uff1a <\/p>\n\n\n\n<p>\u7a7a\u683c \uff01 \" # $ % &amp; \u2018 \uff08 \uff09 * + \uff0c \uff0d \uff0e \/ \uff1a \uff1b &lt; = > \uff1f @ [ \\ ] ^ _ \u2018 { | } \uff5e A-Z a-z 0-9 <\/p>\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<pre class=\"wp-block-code\"><code>gbase> select to_single_byte('\uff5b\uff5d\uff3b\uff3d\uff08\uff09\uff0b\uff0d\uff0a\uff0f\uff41\uff42\uff43\uff44\uff45\uff46\uff47\uff21\uff22\uff23\uff24\uff25\uff26\uff27');\r\n+--------------------------------------------------------------------------------------------+\r\n| to_single_byte('\uff5b\uff5d\uff3b\uff3d\uff08\uff09\uff0b\uff0d\uff0a\uff0f\uff41\uff42\uff43\uff44\uff45\uff46\uff47\uff21\uff22\uff23\uff24\uff25\uff26\uff27')                         |\r\n+--------------------------------------------------------------------------------------------+\r\n| {}&#91;]()+-*\/abcdefgABCDEFG                                                                   |\r\n+--------------------------------------------------------------------------------------------+\r\n1 row in set (Elapsed: 00:00:00.00)\r\n<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e2d\u6587\u5bf9\u5404\u79cd\u5b57\u7b26\u548c\u5b57\u6bcd\uff0c\u6570\u5b57\u7b49\u90fd\u6709\u5168\u89d2\u6a21\u5f0f\uff0cGBase 8a\u6570\u636e\u5e93\u96c6\u7fa4\u63d0\u4f9b\u4e86to_single_byte\u51fd\u6570\uff0c\u5c06\u5168\u89d2\u5b57\u7b26\u8f6c\u5316\u4e3a\u534a\u89d2\u5b57\u7b26\u3002<\/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-2655","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\/2655","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=2655"}],"version-history":[{"count":1,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/2655\/revisions"}],"predecessor-version":[{"id":2656,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/2655\/revisions\/2656"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=2655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=2655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=2655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}