{"id":599,"date":"2012-07-06T08:42:08","date_gmt":"2012-07-06T00:42:08","guid":{"rendered":"http:\/\/blog.hoyo.idv.tw\/?p=599"},"modified":"2020-01-05T14:35:34","modified_gmt":"2020-01-05T06:35:34","slug":"%e8%b3%87%e6%96%99%e6%af%94%e5%b0%8d","status":"publish","type":"post","link":"https:\/\/blog.hoyo.idv.tw\/?p=599","title":{"rendered":"\u8cc7\u6599\u6bd4\u5c0d"},"content":{"rendered":"

LEFT JOIN & RIGHT JOIN & IS NULL<\/h1>\n

\u4e09\u500b\u8cc7\u6599\u8868\uff0c\u5176\u4e2d\u5169\u500b\u4f7f\u7528 INNER JOIN \u9023\u7d50\uff0c\u9023\u7d50\u5f8c\u548c\u7b2c\u4e09\u500b\u8cc7\u6599\u8868\u6bd4\u5c0d\u5169\u4e0d\u76f8\u7b26\u8cc7\u6599\u3002\u6b64\u8655\u4f5c\u7528\u662f\u6bd4\u5c0d SmartERP \u8f49\u6a94\u66ab\u5b58\uff0c\u9084\u6709\u54ea\u4e9b\u8cc7\u6599\u672a\u8655\u7406\u3002<\/p>\n

SQL \u6307\u4ee4\u95dc\u9375\u662f\u4f7f\u7528 LEFT JOIN \u6216 RIGHT JOIN \u9023\u7d50\u5169\u908a\u7684\u8cc7\u6599\u8868\uff0c\u7136\u5f8c\u5728 WHERE \u8f38\u5165\u53e6\u4e00\u908a\u8cc7\u6599\u8868\u6bd4\u5c0d\u6b04\u4f4d\u689d\u4ef6\u70ba IS NULL<\/strong>\u00a0\u3002<\/p>\n

\u6240\u4ee5\uff0c\u5982\u679c\u4f7f\u7528 LEFT JOIN \uff0c\u90a3\u5c31\u662f\u53f3\u908a\u7684\u8cc7\u6599\u8868\u6bd4\u5c0d\u6b04\u4f4d\u4f7f\u7528 IS NULL \u4f86\u9032\u884c\u6bd4\u5c0d\u3002<\/p>\n

SELECT * FROM hhdb.dbo.PURTG AS PURTG\r\n INNER JOIN hhdb.dbo.PURTH AS PURTH ON TG001=TH001 AND TG002=TH002\r\n LEFT JOIN money_erp.dbo.KJSNFB AS KJSNFB ON TH001=PURTH001 AND TH002=PURTH002 AND TH003=PURTH003\r\n WHERE TG003 LIKE '{$search_date}%' AND TG001<>'3401' AND TH009<>'H04'AND TG005='$TG005'\r\n AND PURTH001 IS NULL AND PURTH002 IS NULL AND PURTH003 IS NULL ORDER BY TG003<\/pre>\n
\u00a0HAVING & SUM()<\/h1>\n
\u5169\u500b\u8cc7\u6599\u8868\uff0c\u6bd4\u5c0d\u91d1\u984d\u6b04\u4f4d\u662f\u5426\u5df2\u7d93\u8655\u7406\u5b8c\u6210\uff0c\u5f9e\u4ee5\u4e0a\u8f49\u6a94\u70ba\u4f8b\uff0c\u5982\u679c\u8cc7\u6599\u9700\u8981\u62c6\u89e3\u6210\u591a\u7b46\u8cc7\u6599\u6b78\u5c6c\u4e0d\u540c\u5c0d\u8c61\uff0c\u90a3\u5c31\u9700\u8981 HAVING \u4ee5\u53ca SUM() \u4f86\u52a0\u7e3d\u8cc7\u6599\u6bd4\u5c0d\u3002<\/p>\n
TABLE1 & TABLE2 \u8cc7\u6599\u8868\u7d50\u69cb
\n<\/a>\"\"<\/a><\/p>\n
\u8cc7\u6599\u8868\u8cc7\u6599
\n<\/a>\"\"<\/a><\/p>\n
SQL \u6307\u4ee4\u67e5\u8a62\u7d50\u679c
\n<\/a>\"\"<\/a><\/p>\n
SELECT TABLE1.A\r\nFROM TABLE1 INNER JOIN\r\n TABLE2 ON TABLE1.A = TABLE2.A\r\nGROUP BY TABLE1.A, TABLE1.B\r\nHAVING (TABLE1.B = SUM(TABLE2.B))<\/pre>\n
--<\/p>\n
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<\/path><\/svg><\/i>  1,228 total views<\/p>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"
LEFT JOIN &...<\/p>\n
<\/div>\n
<\/path><\/svg><\/i>  1,228 total views<\/p>\n
<\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[56],"tags":[63,62,61],"_links":{"self":[{"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/599"}],"collection":[{"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=599"}],"version-history":[{"count":10,"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/599\/revisions"}],"predecessor-version":[{"id":6658,"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/599\/revisions\/6658"}],"wp:attachment":[{"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.hoyo.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}