{"id":2342,"date":"2025-03-04T08:45:09","date_gmt":"2025-03-04T00:45:09","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2342"},"modified":"2025-03-04T08:45:09","modified_gmt":"2025-03-04T00:45:09","slug":"sqlite-having-%e5%ad%90%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/04\/sqlite-having-%e5%ad%90%e5%8f%a5\/","title":{"rendered":"SQLite HAVING \u5b50\u53e5"},"content":{"rendered":"\n
\n

HAVING<\/code> \u5b50\u53e5\u7528\u4e8e\u5728 SQL \u67e5\u8be2\u4e2d\u5bf9 GROUP BY<\/code> \u4ea7\u751f\u7684\u5206\u7ec4\u7ed3\u679c\u8fdb\u884c\u7b5b\u9009\u3002\u5b83\u7c7b\u4f3c\u4e8e WHERE<\/code> \u5b50\u53e5\uff0c\u4f46\u4e0d\u540c\u7684\u662f\uff0cWHERE<\/code> \u4ec5\u5728\u5206\u7ec4\u524d\u7b5b\u9009\u539f\u59cb\u6570\u636e\uff0c\u800c HAVING<\/code> \u5728\u5206\u7ec4\u540e\u5bf9\u805a\u5408\u7ed3\u679c\u8fdb\u884c\u7b5b\u9009\u3002\u901a\u5e38\uff0cHAVING<\/code> \u7528\u4e8e\u4e0e\u805a\u5408\u51fd\u6570\u4e00\u8d77\u4f7f\u7528\u3002<\/p>\n<\/blockquote>\n\n\n\n

\u57fa\u672c\u8bed\u6cd5<\/strong><\/h3>\n\n\n\n
SELECT column_name(s), aggregate_function(column_name)\nFROM table_name\nWHERE condition\nGROUP BY column_name\nHAVING aggregate_function(column_name) condition;<\/code><\/pre>\n\n\n\n
    \n
  • column_name(s)<\/code>: \u7528\u4e8e\u9009\u62e9\u7684\u5217\u3002<\/li>\n\n\n\n
  • aggregate_function<\/code>: \u805a\u5408\u51fd\u6570\uff08\u4f8b\u5982 COUNT()<\/code>, SUM()<\/code>, AVG()<\/code>, MAX()<\/code>, MIN()<\/code>\uff09\u3002<\/li>\n\n\n\n
  • table_name<\/code>: \u67e5\u8be2\u7684\u6570\u636e\u8868\u3002<\/li>\n\n\n\n
  • condition<\/code>: \u53ef\u9009\u7684\u67e5\u8be2\u6761\u4ef6\u3002<\/li>\n\n\n\n
  • HAVING aggregate_function(column_name) condition<\/code>: \u6839\u636e\u805a\u5408\u7ed3\u679c\u8fdb\u884c\u7b5b\u9009\u3002<\/li>\n<\/ul>\n\n\n\n
    1. \u4f7f\u7528 HAVING<\/code> \u8fc7\u6ee4\u805a\u5408\u7ed3\u679c<\/strong><\/h3>\n\n\n\n
    HAVING<\/code> \u5e38\u4e0e\u805a\u5408\u51fd\u6570\u7ed3\u5408\u4f7f\u7528\uff0c\u53ef\u4ee5\u5728\u5206\u7ec4\u540e\u5bf9\u805a\u5408\u6570\u636e\u8fdb\u884c\u8fc7\u6ee4\u3002<\/p>\n\n\n\n
    \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
      \n
    • \u6309 department<\/code> \u5217\u5206\u7ec4\uff0c\u8ba1\u7b97\u6bcf\u4e2a\u90e8\u95e8\u7684\u603b\u85aa\u8d44\uff0c\u5e76\u4ec5\u8fd4\u56de\u603b\u85aa\u8d44\u5927\u4e8e 5000 \u7684\u90e8\u95e8\uff1a<\/li>\n<\/ul>\n\n\n\n
        SELECT department, SUM(salary)\n  FROM employees\n  GROUP BY department\n  HAVING SUM(salary) > 5000;<\/code><\/pre>\n\n\n\n
        \n
      • \u8be5\u67e5\u8be2\u8fd4\u56de\u603b\u85aa\u8d44\u5927\u4e8e 5000 \u7684\u90e8\u95e8\u53ca\u5176\u603b\u85aa\u8d44\u3002<\/li>\n<\/ul>\n\n\n\n
        2. \u4f7f\u7528 HAVING<\/code> \u548c\u591a\u4e2a\u805a\u5408\u6761\u4ef6<\/strong><\/h3>\n\n\n\n
        \u4f60\u53ef\u4ee5\u5728 HAVING<\/code> \u5b50\u53e5\u4e2d\u8bbe\u7f6e\u591a\u4e2a\u6761\u4ef6\uff0c\u6765\u5bf9\u805a\u5408\u7ed3\u679c\u8fdb\u884c\u66f4\u7cbe\u786e\u7684\u7b5b\u9009\u3002<\/p>\n\n\n\n
        \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
          \n
        • \u6309 department<\/code> \u5217\u5206\u7ec4\uff0c\u8ba1\u7b97\u6bcf\u4e2a\u90e8\u95e8\u7684\u5e73\u5747\u85aa\u8d44\uff0c\u8981\u6c42\u5e73\u5747\u85aa\u8d44\u5927\u4e8e 5000 \u4e14\u5458\u5de5\u4eba\u6570\u5927\u4e8e 10\uff1a<\/li>\n<\/ul>\n\n\n\n
            SELECT department, AVG(salary), COUNT(*)\n  FROM employees\n  GROUP BY department\n  HAVING AVG(salary) > 5000 AND COUNT(*) > 10;<\/code><\/pre>\n\n\n\n
            \n
          • \u8be5\u67e5\u8be2\u8fd4\u56de\u5e73\u5747\u85aa\u8d44\u5927\u4e8e 5000 \u4e14\u5458\u5de5\u4eba\u6570\u5927\u4e8e 10 \u7684\u90e8\u95e8\u3002<\/li>\n<\/ul>\n\n\n\n
            3. HAVING<\/code> \u4e0e WHERE<\/code> \u7684\u533a\u522b<\/strong><\/h3>\n\n\n\n
              \n
            • WHERE<\/code><\/strong>: \u7528\u4e8e\u7b5b\u9009\u539f\u59cb\u6570\u636e\uff0c\u901a\u5e38\u5728 GROUP BY<\/code> \u4e4b\u524d\u4f7f\u7528\u3002<\/li>\n\n\n\n
            • HAVING<\/code><\/strong>: \u7528\u4e8e\u7b5b\u9009 GROUP BY<\/code> \u4ea7\u751f\u7684\u5206\u7ec4\u6570\u636e\uff0c\u901a\u5e38\u5728\u5206\u7ec4\u540e\u4f7f\u7528\u3002<\/li>\n<\/ul>\n\n\n\n
              \u6ce8\u610f<\/strong>\uff1aWHERE<\/code> \u4e0d\u80fd\u76f4\u63a5\u4e0e\u805a\u5408\u51fd\u6570\u4e00\u8d77\u4f7f\u7528\uff0c\u800c HAVING<\/code> \u53ef\u4ee5\u3002<\/p>\n\n\n\n
              \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
                \n
              • \u5148\u7b5b\u9009\u51fa\u85aa\u8d44\u5927\u4e8e 3000 \u7684\u5458\u5de5\uff0c\u518d\u6309 department<\/code> \u5206\u7ec4\uff0c\u8ba1\u7b97\u6bcf\u4e2a\u90e8\u95e8\u7684\u5e73\u5747\u85aa\u8d44\uff0c\u6700\u540e\u7b5b\u9009\u51fa\u5e73\u5747\u85aa\u8d44\u5927\u4e8e 5000 \u7684\u90e8\u95e8\uff1a<\/li>\n<\/ul>\n\n\n\n
                  SELECT department, AVG(salary)\n  FROM employees\n  WHERE salary > 3000\n  GROUP BY department\n  HAVING AVG(salary) > 5000;<\/code><\/pre>\n\n\n\n
                  \n
                • \u8be5\u67e5\u8be2\u9996\u5148\u7b5b\u9009\u85aa\u8d44\u5927\u4e8e 3000 \u7684\u5458\u5de5\uff0c\u7136\u540e\u5bf9\u8fd9\u4e9b\u5458\u5de5\u6309\u90e8\u95e8\u5206\u7ec4\u5e76\u8ba1\u7b97\u5e73\u5747\u85aa\u8d44\uff0c\u6700\u540e\u8fd4\u56de\u5e73\u5747\u85aa\u8d44\u5927\u4e8e 5000 \u7684\u90e8\u95e8\u3002<\/li>\n<\/ul>\n\n\n\n
                  4. HAVING<\/code> \u548c GROUP BY<\/code> \u7ed3\u5408\u4f7f\u7528<\/strong><\/h3>\n\n\n\n
                  \u901a\u5e38\uff0cHAVING<\/code> \u4e0e GROUP BY<\/code> \u4e00\u8d77\u4f7f\u7528\uff0c\u7528\u4e8e\u5bf9\u5206\u7ec4\u540e\u7684\u7ed3\u679c\u8fdb\u884c\u8fdb\u4e00\u6b65\u7b5b\u9009\u3002\u4f60\u53ef\u4ee5\u5728 GROUP BY<\/code> \u540e\u5e94\u7528\u805a\u5408\u6761\u4ef6\u3002<\/p>\n\n\n\n
                  \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
                    \n
                  • \u6309 department<\/code> \u5217\u5206\u7ec4\uff0c\u8ba1\u7b97\u6bcf\u4e2a\u90e8\u95e8\u7684\u5458\u5de5\u4eba\u6570\uff0c\u5e76\u8fd4\u56de\u5458\u5de5\u4eba\u6570\u5927\u4e8e 5 \u7684\u90e8\u95e8\uff1a<\/li>\n<\/ul>\n\n\n\n
                      SELECT department, COUNT(*)\n  FROM employees\n  GROUP BY department\n  HAVING COUNT(*) > 5;<\/code><\/pre>\n\n\n\n
                      \n
                    • \u8be5\u67e5\u8be2\u8fd4\u56de\u5458\u5de5\u4eba\u6570\u5927\u4e8e 5 \u7684\u90e8\u95e8\u3002<\/li>\n<\/ul>\n\n\n\n
                      5. \u4f7f\u7528 HAVING<\/code> \u8fdb\u884c\u6392\u5e8f\u540e\u7684\u7b5b\u9009<\/strong><\/h3>\n\n\n\n
                      \u6709\u65f6\u4f60\u53ef\u80fd\u5e0c\u671b\u5bf9\u5206\u7ec4\u540e\u7684\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u57fa\u4e8e\u6392\u5e8f\u7ed3\u679c\u8fdb\u4e00\u6b65\u7b5b\u9009\u3002<\/p>\n\n\n\n
                      \u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n
                        \n
                      • \u6309 department<\/code> \u5217\u5206\u7ec4\uff0c\u8ba1\u7b97\u6bcf\u4e2a\u90e8\u95e8\u7684\u603b\u85aa\u8d44\uff0c\u6309\u603b\u85aa\u8d44\u964d\u5e8f\u6392\u5217\uff0c\u5e76\u53ea\u8fd4\u56de\u524d 3 \u4e2a\u90e8\u95e8\uff1a<\/li>\n<\/ul>\n\n\n\n
                          SELECT department, SUM(salary)\n  FROM employees\n  GROUP BY department\n  HAVING SUM(salary) > 10000\n  ORDER BY SUM(salary) DESC\n  LIMIT 3;<\/code><\/pre>\n\n\n\n
                          \n
                        • \u8be5\u67e5\u8be2\u8fd4\u56de\u603b\u85aa\u8d44\u5927\u4e8e 10000 \u7684\u524d 3 \u4e2a\u90e8\u95e8\u3002<\/li>\n<\/ul>\n\n\n\n
                          \n\n\n\n
                          \u603b\u7ed3<\/strong><\/h2>\n\n\n\n
                            \n
                          • HAVING<\/code><\/strong> \u5b50\u53e5\u7528\u4e8e\u7b5b\u9009 GROUP BY<\/code> \u4ea7\u751f\u7684\u5206\u7ec4\u7ed3\u679c\uff0c\u901a\u5e38\u4e0e\u805a\u5408\u51fd\u6570\u4e00\u8d77\u4f7f\u7528\u3002<\/li>\n\n\n\n
                          • WHERE<\/code><\/strong> \u7528\u4e8e\u7b5b\u9009\u539f\u59cb\u6570\u636e\uff0cHAVING<\/code><\/strong> \u7528\u4e8e\u7b5b\u9009\u805a\u5408\u540e\u7684\u6570\u636e\u3002<\/li>\n\n\n\n
                          • \u53ef\u4ee5\u5728 HAVING<\/code><\/strong> \u4e2d\u4f7f\u7528\u591a\u4e2a\u6761\u4ef6\u6765\u8fdb\u4e00\u6b65\u7b5b\u9009\u5206\u7ec4\u540e\u7684\u7ed3\u679c\u3002<\/li>\n\n\n\n
                          • HAVING<\/code> \u53ef\u4ee5\u4e0e GROUP BY<\/code>\u3001\u805a\u5408\u51fd\u6570\u548c\u6392\u5e8f\u529f\u80fd\u4e00\u8d77\u4f7f\u7528\uff0c\u7075\u6d3b\u63a7\u5236\u67e5\u8be2\u7ed3\u679c\u3002<\/li>\n<\/ul>\n\n\n\n
                            HAVING<\/code> \u662f\u8fdb\u884c\u805a\u5408\u6570\u636e\u7b5b\u9009\u65f6\u975e\u5e38\u91cd\u8981\u7684\u5de5\u5177\uff0c\u7279\u522b\u662f\u5728\u751f\u6210\u62a5\u544a\u548c\u8fdb\u884c\u6570\u636e\u5206\u6790\u65f6\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                            HAVING \u5b50\u53e5\u7528\u4e8e\u5728 SQL \u67e5\u8be2\u4e2d\u5bf9 GROUP BY \u4ea7\u751f\u7684\u5206\u7ec4\u7ed3\u679c\u8fdb\u884c\u7b5b\u9009\u3002\u5b83\u7c7b\u4f3c\u4e8e WHERE \u5b50 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[],"class_list":["post-2342","post","type-post","status-publish","format-standard","hentry","category-sqlite"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2342","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=2342"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2342\/revisions"}],"predecessor-version":[{"id":2343,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2342\/revisions\/2343"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}