{"id":3542,"date":"2022-09-21T19:56:25","date_gmt":"2022-09-21T11:56:25","guid":{"rendered":"https:\/\/www.citerp.com.tw\/citwordpress\/?p=3542"},"modified":"2022-12-30T14:31:48","modified_gmt":"2022-12-30T06:31:48","slug":"mssql-isnull001","status":"publish","type":"post","link":"https:\/\/www.citerp.com.tw\/citwordpress\/mssql-isnull001\/","title":{"rendered":"[MS-SQL] \u932f\u8aa4\u8655\u7406-MSSQL Warning: Null value is eliminated by an aggregate or other SET operation."},"content":{"rendered":"\n<p>\u7576\u6211\u5011\u91dd\u5c0d\u6b04\u4f4d\u505a\u4e00\u4e9b\u904b\u7b97\u7684\u6642\u5019\uff0c\u5982\u679c\u6b04\u4f4d\u7684\u503c\u70baNull\uff0c\u96d6\u7136\u9084\u662f\u53ef\u4ee5\u57f7\u884c\uff0c\u4f46\u6703\u986f\u793a\u8b66\u544a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select Item =Max(tCpn.Item)<\/code><\/pre>\n\n\n\n<p>\u8b66\u544a\uff1aWarning: Null value is eliminated by an aggregate or other SET operation.<\/p>\n\n\n\n<p>\u90a3\u8a72\u600e\u9ebc\u505a\uff0c\u624d\u4e0d\u6703\u6709\u8b66\u544a\u5462??<\/p>\n\n\n\n<p>\u9019\u6642\u5019\u5c31\u8981\u7528\u5230IsNull\u9019\u500b\u51fd\u5f0f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select Item =Max(IsNull(tCpn.Item,''))<\/code><\/pre>\n\n\n\n<p>\u5c07\u6b04\u4f4d\u53ef\u80fd\u70baNull\u7684\u6b04\u4f4d\uff0c\u7528IsNull\u5224\u65b7\uff0c\u5982\u679c\u70baNull\uff0c\u5247\u7528&#8221;(\u7a7a\u767d)\u53d6\u4ee3<\/p>\n\n\n\n<p>\u518d\u6b21\u57f7\u884c\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u8b66\u544a\u6d88\u5931\u4e86\u5594!!\u771f\u7684\u5f88\u68d2!<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u76f8\u95dc\u6587\u7ae0<\/p>\n\n\n\n<p>\ud83d\udc49 <a href=\"https:\/\/www.citerp.com.tw\/citwordpress\/mssql-charindex\/\" target=\"_blank\" rel=\"noreferrer noopener\">MSSQL CHARINDEX (Transact-SQL) \u67e5\u627e\u5b57\u5143\u5728\u5b57\u4e32\u4e2d\u7684\u4f4d\u7f6e<\/a><\/p>\n\n\n\n<p>\ud83d\udc49 <a href=\"https:\/\/www.citerp.com.tw\/citwordpress\/opspeautochklistm001\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u8766\u76ae\u5c0d\u5e33\u738b-\u8766\u76ae\u5c0d\u5e33\u7d50\u679c\u4e00\u89bd\u8868-\u70ba\u4ec0\u9ebc\u8981\u5c0d\u5e33?\u7121\u5c0d\u61c9???<\/a><\/p>\n\n\n\n<p>\u6211\u5011\u670930\u5e74\u4ee5\u4e0a\u7684MSSQL\u4f7f\u7528\u7d93\u9a57\uff0c\u6709\u4ec0\u9ebc\u554f\u984c\uff0c\u6b61\u8fce\u8207\u6211\u5011\u806f\u7e6b\uff0c\u611f\u8b1d\u60a8!!<\/p>\n\n\n\n<p>\u624b\u5200\u8a66\u7528=&gt;<a href=\"https:\/\/buy.citerp.com.tw\/\" data-type=\"URL\" data-id=\"https:\/\/buy.citerp.com.tw\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u8766\u76ae\u5c0d\u5e33\u738b<\/a><\/p>\n\n\n\n<p>\u624b\u5200\u8a66\u7528=&gt;<a rel=\"noreferrer noopener\" href=\"https:\/\/www.citerp.com.tw\/\" target=\"_blank\" data-type=\"URL\" data-id=\"https:\/\/www.citerp.com.tw\/\">\u5eb7\u6377\u96f2\u7aefERP<\/a><\/p>\n\n\n\n<p class=\"has-pale-cyan-blue-background-color has-background\">\u4efb\u4f55\u4e00\u5957\u7cfb\u7d71\u7684\u64b0\u5beb\u8207\u7dad\u8b77\uff0c\u90fd\u9700\u8981\u76f8\u5c0d\u61c9\u7684\u4eba\u529b\u8207\u96f2\u7aef\u8cc7\u6599\u5eab\u4f86\u7dad\u6301\u3002<br>\u611f\u8b1d\u60a8\u9858\u610f\u4f7f\u7528\u6211\u5011\u7684\u7cfb\u7d71\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[MS-SQL] \u932f\u8aa4\u8655\u7406-MSSQL Warning: Null value is eliminated by an aggregate or other SET operation.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"qubely_global_settings":"","qubely_interactions":"","footnotes":""},"categories":[22],"tags":[254,23],"class_list":["post-3542","post","type-post","status-publish","format-standard","hentry","category-mssql","tag-isnull","tag-mssql"],"qubely_featured_image_url":null,"qubely_author":{"display_name":"\u5eb7\u6377Qoo","author_link":"https:\/\/www.citerp.com.tw\/citwordpress\/author\/cit001\/"},"qubely_comment":0,"qubely_category":"<a href=\"https:\/\/www.citerp.com.tw\/citwordpress\/category\/mssql\/\" rel=\"category tag\">MSSQL<\/a>","qubely_excerpt":"[MS-SQL] \u932f\u8aa4\u8655\u7406-MSSQL Warning: Null value is eliminated b...","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - 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