{"id":2737,"date":"2021-01-04T18:05:03","date_gmt":"2021-01-04T10:05:03","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=2737"},"modified":"2021-01-04T18:09:23","modified_gmt":"2021-01-04T10:09:23","slug":"gbase-8a%e4%bb%8e%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%bd%ac%e6%95%b0%e5%ad%97%e7%9a%84%e5%87%bd%e6%95%b0to_number%e4%bb%8b%e7%bb%8d%e5%92%8c%e6%a0%b7%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/2737","title":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a\u4ece\u5b57\u7b26\u4e32\u8f6c\u6570\u5b57\u7684\u51fd\u6570to_number\u4ecb\u7ecd\u548c\u6837\u4f8b"},"content":{"rendered":"<p>GBase 8a\u6570\u636e\u5e93\u96c6\u7fa4\u63d0\u4f9b\u4e86to_number\u51fd\u6570\uff0c\u7528\u4e8e\u4ece\u5b57\u7b26\u4e32\u8f6c\u5316\u6210\u6570\u5b57\uff0c\u672c\u6587\u4ecb\u7ecd\u8be5\u51fd\u6570\u7684\u8bed\u6cd5\u548c\u8bf4\u660e\uff0c\u5e76\u63d0\u4f9b\u4f7f\u7528\u6837\u4f8b\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-6a2ae78572a12\" 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-6a2ae78572a12\"  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\/2737\/#%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-2\" href=\"https:\/\/www.gbase8.cn\/en\/2737\/#%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\/2737\/#%E6%A0%B7%E4%BE%8B\" >\u6837\u4f8b<\/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\/2737\/#%E5%8F%82%E8%80%83\" >\u53c2\u8003<\/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\/2737\/#%E7%9B%B8%E8%BF%91%E5%8A%9F%E8%83%BD\" >\u76f8\u8fd1\u529f\u80fd<\/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\/2737\/#%E5%8F%8D%E5%90%91%E5%8A%9F%E8%83%BD\" >\u53cd\u5411\u529f\u80fd<\/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\/2737\/#%E7%9B%B8%E5%85%B3%E5%8A%9F%E8%83%BD\" >\u76f8\u5173\u529f\u80fd<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\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>TO_NUMBER(expr)<\/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\u5b57\u7b26\u4e32 expr \u6240\u5305\u542b\u7684\u6570\u636e\u8f6c\u5316\u4e3a NUMBER \u578b\u6570\u636e\u3002expr \u7684\u5f62\u5f0f\u53ef\u4e3a\u4efb\u4f55\u652f\u6301\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\uff0c\u5982\u201c111.0023\u201d\uff0c\u201c23,000,000\u201d\u3002<\/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<p>\u6570\u503c\u5fc5\u987b\u662f\u7b26\u5408\u6570\u5b57\u683c\u5f0f\u7684\uff0c\u652f\u6301\u79d1\u5b66\u8ba1\u6570\u6cd5\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; select to_number('123.456');\n+----------------------+\n| to_number('123.456') |\n+----------------------+\n|              123.456 |\n+----------------------+\n1 row in set (Elapsed: 00:00:00.00)\n\ngbase&gt; select to_number('1.234E3');\n+----------------------+\n| to_number('1.234E3') |\n+----------------------+\n|                 1234 |\n+----------------------+\n1 row in set (Elapsed: 00:00:00.00)\n\n<\/code><\/pre>\n\n\n\n<p>\u4e0d\u652f\u6301\u5343\u5206\u53f7\uff0c\u4f1a\u88ab\u622a\u65ad\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>gbase&gt; select to_number('1,234');\n+--------------------+\n| to_number('1,234') |\n+--------------------+\n|                  1 |\n+--------------------+\n1 row in set, 1 warning (Elapsed: 00:00:00.00)\n\ngbase&gt; show warnings;\n+---------+------+-------------------------------------------+\n| Level   | Code | Message                                   |\n+---------+------+-------------------------------------------+\n| Warning | 1292 | Truncated incorrect DOUBLE value: '1,234' |\n+---------+------+-------------------------------------------+\n1 row in set (Elapsed: 00:00:00.00)\n\ngbase&gt;\n<\/code><\/pre>\n\n\n\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<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%9B%B8%E8%BF%91%E5%8A%9F%E8%83%BD\"><\/span>\u76f8\u8fd1\u529f\u80fd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.gbase8.cn\/en\/2653\/\">GBase 8a\u7684\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362cast\u548cconvert\u7684\u7528\u6cd5\u4f8b\u5b50<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%8D%E5%90%91%E5%8A%9F%E8%83%BD\"><\/span>\u53cd\u5411\u529f\u80fd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.gbase8.cn\/en\/2728\/\">GBase 8a\u4ece\u5b57\u7b26\u4e32\u8f6c\u6570\u5b57\u7c7b\u578b\u7684\u51e0\u79cd\u65b9\u6cd5<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%9B%B8%E5%85%B3%E5%8A%9F%E8%83%BD\"><\/span>\u76f8\u5173\u529f\u80fd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.gbase8.cn\/en\/2733\/\">GBase 8a\u65f6\u95f4\u8f6c\u5b57\u7b26\u4e32\u7c7b\u578b\u7684\u51e0\u79cd\u65b9\u6cd5<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u5357\u5927\u901a\u7528GBase 8a\u6570\u636e\u5e93\u96c6\u7fa4\u63d0\u4f9b\u4e86to_number\u51fd\u6570\uff0c\u7528\u4e8e\u4ece\u5b57\u7b26\u4e32\u8f6c\u5316\u6210\u6570\u5b57\uff0c\u672c\u6587\u4ecb\u7ecd\u8be5\u51fd\u6570\u7684\u8bed\u6cd5\u548c\u8bf4\u660e\uff0c\u5e76\u63d0\u4f9b\u4f7f\u7528\u6837\u4f8b<\/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-2737","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\/2737","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=2737"}],"version-history":[{"count":9,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/2737\/revisions"}],"predecessor-version":[{"id":2823,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/2737\/revisions\/2823"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=2737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=2737"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=2737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}