{"id":6844,"date":"2024-11-08T18:24:16","date_gmt":"2024-11-08T10:24:16","guid":{"rendered":"https:\/\/www.citerp.com.tw\/citwordpress\/?p=6844"},"modified":"2024-11-08T18:24:18","modified_gmt":"2024-11-08T10:24:18","slug":"ms-sql-decimal","status":"publish","type":"post","link":"https:\/\/www.citerp.com.tw\/citwordpress\/ms-sql-decimal\/","title":{"rendered":"[MS-SQL] \u6578\u5b57\u8655\u7406-\u6d6e\u9ede\u6578\u8a08\u7b97\u8aa4\u5dee"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p>\u4e00\u822c\u5728\u8655\u7406\u5e36\u6709\u5c0f\u6578\u9ede\u7684\u6578\u503c\u6211\u5011\u6703\u5c07\u8cc7\u6599\u578b\u614b\u8a2d\u5b9a\u70ba\u6d6e\u9ede\u6578<\/p>\n\n\n\n<p>\u800cMSSQL\u4e2d\u5e38\u898b\u7684\u6d6e\u9ede\u6578\u6709<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Real\uff1a\u5132\u5b58\u4e03\u4f4d\u6709\u6548\u6578<\/li><li>Float\uff1a\u5132\u5b58\u5341\u4e94\u4f4d\u6709\u6548\u6578<\/li><li>Decimal\uff1a\u5132\u5b58\u4e09\u5341\u4e03\u4f4d\u6578\uff08\u5305\u542b\u5c0f\u6578\u9ede\u524d\u9762\u8ddf\u5f8c\u9762\uff09<br>ex\uff1aDecimal(10,2)\u4ee3\u8868\u5c0f\u6578\u9ede\u524d\u516b\u4f4d\u6578\uff0c\u5c0f\u6578\u9ede\u5f8c\u5169\u4f4d\u6578<\/li><\/ul>\n\n\n\n<p>\u7528\u4e0a\u6b21\u9019\u5e7e\u7a2e\u8cc7\u6599\u578b\u614b\u4f86\u5132\u5b58\u5e36\u5c0f\u6578\u9ede\u7684\u6578\u503c<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>EX\uff1a<\/p>\n\n\n\n<p>\u4ee5100000\u7b46\u8cc7\u6599\u53bb\u52a0\u7e3d<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>drop TABLE KKtable\r\ngo\r\nCREATE TABLE KKtable\r\n(\r\nr1 REAL,f2 FLOAT, d3 DECIMAL(8,2)\r\n)\r\n\r\nDECLARE @count int\r\nSET @count=0\r\nWHILE (@count&lt;100000)\r\nBEGIN\r\nINSERT INTO KKtable VALUES(0.1,0.1,0.1)\r\nSET @count=@count+1\r\nEND\r\n\r\nSELECT r1,f2,d3 FROM KKtable\r\nSELECT SUM(r1),SUM(f2),SUM(d3) FROM KKtable<\/code><\/pre>\n\n\n\n<p>\u7d50\u679c\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>---------------------- ---------------------- ---------------------------------------\r\n10000.0001490116       10000.0000000188       10000.00\r\n\r\n(1 row(s) affected)<\/code><\/pre>\n\n\n\n<p>\u7d50\u8ad6<\/p>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230Real\u8ddfFloat\u90fd\u7522\u751f\u4e86\u8aa4\u5dee<\/p>\n\n\n\n<p>\u6240\u4ee5\u70ba\u4e86\u4fdd\u5b58\u8ff0\u8077\u7684\u6b63\u78ba\u6027<\/p>\n\n\n\n<p>\u9084\u662f\u4f7f\u7528Decimal\u6bd4\u8f03\u597d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[MS-SQL] \u6578\u5b57\u8655\u7406-\u6d6e\u9ede\u6578\u8a08\u7b97\u8aa4\u5dee<\/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":[291,22],"tags":[23],"class_list":["post-6844","post","type-post","status-publish","format-standard","hentry","category-mss_number","category-mssql","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\/mss_number\/\" rel=\"category tag\">mss_number<\/a> <a href=\"https:\/\/www.citerp.com.tw\/citwordpress\/category\/mssql\/\" rel=\"category tag\">MSSQL<\/a>","qubely_excerpt":"[MS-SQL] \u6578\u5b57\u8655\u7406-\u6d6e\u9ede\u6578\u8a08\u7b97\u8aa4\u5dee","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - 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