{"id":112,"date":"2024-12-08T11:07:58","date_gmt":"2024-12-08T03:07:58","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=112"},"modified":"2024-12-08T11:07:58","modified_gmt":"2024-12-08T03:07:58","slug":"sql%e4%b8%ad%e7%9a%84sum%e6%80%8e%e4%b9%88%e5%8e%bb%e5%b0%8f%e6%95%b0%e7%82%b9","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2024\/12\/08\/sql%e4%b8%ad%e7%9a%84sum%e6%80%8e%e4%b9%88%e5%8e%bb%e5%b0%8f%e6%95%b0%e7%82%b9\/","title":{"rendered":"sql\u4e2d\u7684sum\u600e\u4e48\u53bb\u5c0f\u6570\u70b9"},"content":{"rendered":"\n

\u5728 SQL \u4e2d\uff0c\u4f7f\u7528 SUM<\/code> \u51fd\u6570\u8ba1\u7b97\u603b\u548c\u540e\uff0c\u53ef\u4ee5\u5229\u7528 CAST<\/code> \u6216 ROUND<\/code> \u51fd\u6570\u5c06\u7ed3\u679c\u53bb\u9664\u5c0f\u6570\u70b9\u3002\u4ee5\u4e0b\u662f\u51e0\u79cd\u5e38\u89c1\u7684\u505a\u6cd5\uff1a<\/p>\n\n\n\n

1. \u4f7f\u7528 CAST<\/code> \u8f6c\u6362\u4e3a\u6574\u6570<\/h3>\n\n\n\n

CAST<\/code> \u51fd\u6570\u53ef\u4ee5\u5c06\u7ed3\u679c\u8f6c\u6362\u4e3a\u6574\u6570\u7c7b\u578b\uff0c\u4ece\u800c\u53bb\u6389\u5c0f\u6570\u70b9\u90e8\u5206\uff1a<\/p>\n\n\n\n

SELECT CAST(SUM(column_name) AS INT) AS sum_without_decimal\nFROM table_name;\n<\/code><\/pre>\n\n\n\n
\n\n\n\n
2. \u4f7f\u7528 ROUND<\/code> \u51fd\u6570<\/h3>\n\n\n\n
ROUND<\/code> \u51fd\u6570\u53ef\u4ee5\u6307\u5b9a\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u5982\u679c\u4fdd\u7559 0 \u4f4d\u5c0f\u6570\uff0c\u5c31\u53ef\u4ee5\u53bb\u6389\u5c0f\u6570\u70b9\uff1a<\/p>\n\n\n\n
SELECT ROUND(SUM(column_name), 0) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
\n\n\n\n
3. \u4f7f\u7528 FLOOR<\/code> \u6216 CEIL<\/code> \u51fd\u6570<\/h3>\n\n\n\n
    \n
  • \u5982\u679c\u9700\u8981\u603b\u662f\u53d6\u5c0f\u4e8e\u6216\u7b49\u4e8e\u7ed3\u679c\u7684\u6700\u5927\u6574\u6570\uff08\u5411\u4e0b\u53d6\u6574\uff09\uff1a<\/li>\n<\/ul>\n\n\n\n
    SELECT FLOOR(SUM(column_name)) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \n
    • \u5982\u679c\u9700\u8981\u603b\u662f\u53d6\u5927\u4e8e\u6216\u7b49\u4e8e\u7ed3\u679c\u7684\u6700\u5c0f\u6574\u6570\uff08\u5411\u4e0a\u53d6\u6574\uff09\uff1a<\/li>\n<\/ul>\n\n\n\n
      SELECT CEIL(SUM(column_name)) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \u793a\u4f8b\u6570\u636e<\/h3>\n\n\n\n
      \u5047\u8bbe\u6709\u4e00\u5f20\u8868 orders<\/code>\uff0c\u5176\u4e2d\u5305\u542b\u5217 amount<\/code>\uff1a<\/p>\n\n\n\n
      SELECT ROUND(SUM(amount), 0) AS sum_without_decimal\nFROM orders;<\/code><\/pre>\n\n\n\n
      \u8fd9\u6837\u4f1a\u8ba1\u7b97\u6240\u6709\u8ba2\u5355\u91d1\u989d\u7684\u603b\u548c\u5e76\u53bb\u6389\u5c0f\u6570\u90e8\u5206\u3002<\/p>\n\n\n\n
      \u9009\u62e9\u5177\u4f53\u65b9\u6cd5\u53d6\u51b3\u4e8e\u4f60\u5bf9\u5c0f\u6570\u90e8\u5206\u7684\u5904\u7406\u9700\u6c42\uff1a\u76f4\u63a5\u622a\u65ad\uff08CAST<\/code> \u6216 FLOOR<\/code>\uff09\uff0c\u56db\u820d\u4e94\u5165\uff08ROUND<\/code>\uff09\uff0c\u8fd8\u662f\u5411\u4e0a\u53d6\u6574\uff08CEIL<\/code>\uff09\u3002<\/p>\n\n\n\n\n\n\n\n
      \n
      \u9664\u4e86\u5e38\u89c1\u7684 CAST<\/code>\u3001ROUND<\/code>\u3001FLOOR<\/code>\u3001CEIL<\/code> \u7b49\u51fd\u6570\uff0cSQL \u4e2d\u8fd8\u6709\u4e00\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u7528\u6765\u5904\u7406 SUM<\/code> \u7ed3\u679c\u4e2d\u7684\u5c0f\u6570\u70b9\uff0c\u6839\u636e\u4e0d\u540c\u7684\u9700\u6c42\u5b9e\u73b0\u53bb\u5c0f\u6570\u70b9\u7684\u6548\u679c\uff1a<\/p>\n<\/blockquote>\n\n\n\n
      \n\n\n\n
      1. \u4f7f\u7528 TRUNCATE<\/code> \u51fd\u6570<\/strong>\uff08MySQL \u7279\u6709\uff09<\/h3>\n\n\n\n
      TRUNCATE<\/code> \u51fd\u6570\u53ef\u4ee5\u5c06\u6570\u503c\u622a\u65ad\u5230\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\uff0c\u5982\u679c\u6307\u5b9a\u4e3a 0 \u4f4d\u5c0f\u6570\uff0c\u5c31\u53ef\u4ee5\u53bb\u6389\u5c0f\u6570\u70b9\u90e8\u5206\uff1a<\/p>\n\n\n\n
      SELECT TRUNCATE(SUM(column_name), 0) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \u533a\u522b<\/strong>\uff1aTRUNCATE<\/code> \u662f\u76f4\u63a5\u53bb\u6389\u5c0f\u6570\u90e8\u5206\uff0c\u800c\u4e0d\u8fdb\u884c\u56db\u820d\u4e94\u5165\u3002<\/p>\n\n\n\n
      \n\n\n\n
      2. \u4f7f\u7528\u6574\u6570\u8fd0\u7b97<\/strong><\/h3>\n\n\n\n
      \u5c06\u6570\u503c\u5f3a\u5236\u8f6c\u6362\u4e3a\u6574\u6570\u7c7b\u578b\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u7b80\u5355\u7684\u6570\u5b66\u8fd0\u7b97\u53bb\u6389\u5c0f\u6570\u90e8\u5206\uff1a<\/p>\n\n\n\n
      \u65b9\u6cd5 1\uff1a\u901a\u8fc7\u9664\u6cd5\u4e0e\u6574\u6570\u8fd0\u7b97<\/h4>\n\n\n\n
      SELECT (SUM(column_name) DIV 1) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \u65b9\u6cd5 2\uff1a\u901a\u8fc7 MOD<\/code> \u64cd\u4f5c<\/h4>\n\n\n\n
      \u79fb\u9664\u5c0f\u6570\u90e8\u5206\u7684\u6548\u679c\uff1a<\/p>\n\n\n\n
      SELECT SUM(column_name) - (SUM(column_name) MOD 1) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      3. \u7ed3\u5408\u5b57\u7b26\u4e32\u5904\u7406\u51fd\u6570<\/strong><\/h3>\n\n\n\n
      \u5c06\u6570\u503c\u8f6c\u4e3a\u5b57\u7b26\u4e32\u540e\u79fb\u9664\u5c0f\u6570\u90e8\u5206\uff0c\u9002\u5408\u67d0\u4e9b\u652f\u6301\u5b57\u7b26\u4e32\u5904\u7406\u7684\u6570\u636e\u5e93\uff1a<\/p>\n\n\n\n
      SELECT CAST(SUBSTRING_INDEX(SUM(column_name), '.', 1) AS UNSIGNED) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \u6b64\u65b9\u6cd5\u4f1a\u5c06\u5c0f\u6570\u70b9\u524d\u7684\u90e8\u5206\u622a\u53d6\u4e0b\u6765\uff0c\u518d\u8f6c\u6362\u4e3a\u6574\u6570\u3002<\/p>\n\n\n\n
      \n\n\n\n
      4. \u4f7f\u7528\u683c\u5f0f\u5316\u51fd\u6570<\/strong><\/h3>\n\n\n\n
      \u4e00\u4e9b\u6570\u636e\u5e93\u63d0\u4f9b\u683c\u5f0f\u5316\u51fd\u6570\uff0c\u53ef\u4ee5\u901a\u8fc7\u683c\u5f0f\u5316\u5b9e\u73b0\u53bb\u6389\u5c0f\u6570\uff1a<\/p>\n\n\n\n
      MySQL \u7684 FORMAT<\/code> \u51fd\u6570<\/h4>\n\n\n\n
      SELECT FORMAT(SUM(column_name), 0) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \u6ce8\u610f\uff1aFORMAT<\/code> \u8fd4\u56de\u7684\u662f\u5b57\u7b26\u4e32\u7ed3\u679c\uff0c\u5982\u679c\u9700\u8981\u6574\u6570\u7c7b\u578b\uff0c\u53ef\u4ee5\u7ed3\u5408 CAST<\/code>\u3002<\/p>\n\n\n\n
      PostgreSQL \u7684 TO_CHAR<\/code> \u51fd\u6570<\/h4>\n\n\n\n
      SELECT TO_CHAR(SUM(column_name), '999999') AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      5. \u5e26\u6761\u4ef6\u7684\u5408\u8ba1<\/strong><\/h3>\n\n\n\n
      \u6709\u65f6\u4f60\u53ef\u80fd\u9700\u8981\u5728 SUM<\/code> \u524d\u5bf9\u6570\u636e\u8fdb\u884c\u7b5b\u9009\u6216\u5904\u7406\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n
      \u53bb\u9664\u5c0f\u6570\u70b9\u524d\u540e\u518d\u6c42\u548c\uff1a<\/h4>\n\n\n\n
      SELECT SUM(FLOOR(column_name)) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \u6309\u7279\u5b9a\u6761\u4ef6\u7edf\u8ba1\u540e\u518d\u53bb\u5c0f\u6570\uff1a<\/h4>\n\n\n\n
      SELECT CAST(SUM(CASE WHEN column_name > 0 THEN column_name ELSE 0 END) AS INT) AS sum_without_decimal\nFROM table_name;<\/code><\/pre>\n\n\n\n
      \n\n\n\n
      \u793a\u4f8b\u6bd4\u8f83<\/h3>\n\n\n\n
      \u5047\u8bbe\u8868 transactions<\/code> \u7684\u6570\u636e\u5982\u4e0b\uff1a<\/p>\n\n\n\n
      id<\/th>amount<\/th><\/tr><\/thead>
      1<\/td>10.75<\/td><\/tr>
      2<\/td>20.40<\/td><\/tr>
      3<\/td>-5.90<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
        \n
      • \u4f7f\u7528 ROUND<\/code>\uff1a<\/li>\n<\/ul>\n\n\n\n
          SELECT ROUND(SUM(amount), 0) AS sum_without_decimal FROM transactions;<\/code><\/pre>\n\n\n\n
        \u7ed3\u679c\uff1a25<\/code>\uff08\u56db\u820d\u4e94\u5165\u5230\u6574\u6570\uff09<\/p>\n\n\n\n
          \n
        • \u4f7f\u7528 CAST<\/code>\uff1a<\/li>\n<\/ul>\n\n\n\n
            SELECT CAST(SUM(amount) AS INT) AS sum_without_decimal FROM transactions;<\/code><\/pre>\n\n\n\n
          \u7ed3\u679c\uff1a24<\/code>\uff08\u76f4\u63a5\u53bb\u6389\u5c0f\u6570\uff09<\/p>\n\n\n\n
            \n
          • \u4f7f\u7528 FLOOR<\/code>\uff1a<\/li>\n<\/ul>\n\n\n\n
              SELECT FLOOR(SUM(amount)) AS sum_without_decimal FROM transactions;<\/code><\/pre>\n\n\n\n
            \u7ed3\u679c\uff1a24<\/code>\uff08\u5411\u4e0b\u53d6\u6574\uff09<\/p>\n\n\n\n
              \n
            • \u4f7f\u7528 CEIL<\/code>\uff1a<\/li>\n<\/ul>\n\n\n\n
                SELECT CEIL(SUM(amount)) AS sum_without_decimal FROM transactions;<\/code><\/pre>\n\n\n\n
              \u7ed3\u679c\uff1a25<\/code>\uff08\u5411\u4e0a\u53d6\u6574\uff09<\/p>\n\n\n\n
              \n\n\n\n
              \u603b\u7ed3<\/h3>\n\n\n\n
              \u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
                \n
              • \u56db\u820d\u4e94\u5165\uff1aROUND<\/code><\/li>\n\n\n\n
              • \u76f4\u63a5\u622a\u65ad\uff1aCAST<\/code> \u6216 TRUNCATE<\/code><\/li>\n\n\n\n
              • \u5411\u4e0b\u53d6\u6574\uff1aFLOOR<\/code><\/li>\n\n\n\n
              • \u5411\u4e0a\u53d6\u6574\uff1aCEIL<\/code><\/li>\n\n\n\n
              • \u5b57\u7b26\u4e32\u64cd\u4f5c\uff1aSUBSTRING_INDEX<\/code> \u6216 TO_CHAR<\/code><\/li>\n<\/ul>\n\n\n\n
                \u6bcf\u79cd\u65b9\u6cd5\u7684\u7ed3\u679c\u53ef\u80fd\u4f1a\u7565\u6709\u5dee\u5f02\uff0c\u56e0\u6b64\u9700\u7ed3\u5408\u5b9e\u9645\u5e94\u7528\u573a\u666f\u4f7f\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                \u5728 SQL \u4e2d\uff0c\u4f7f\u7528 SUM \u51fd\u6570\u8ba1\u7b97\u603b\u548c\u540e\uff0c\u53ef\u4ee5\u5229\u7528 CAST \u6216 ROUND \u51fd\u6570\u5c06\u7ed3\u679c\u53bb\u9664\u5c0f\u6570\u70b9\u3002\u4ee5\u4e0b\u662f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-112","post","type-post","status-publish","format-standard","hentry","category-sql"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=112"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/112\/revisions"}],"predecessor-version":[{"id":113,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/112\/revisions\/113"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}