<\/span><\/h2>\n\n\n\n\u8fd9\u4e2a\u5199\u6cd5\u4e00\u822c\u9002\u5408\u6570\u5b57\u6bd4\u8f83\u5c11\u7684\u60c5\u51b5\uff0c\u6bd4\u5982\u51e0\u4e2a\uff0c\u51e0\u5343\u4e2a\u3002<\/p>\n\n\n\n
\u591a\u4e2a\u5217\u7528\u5c0f\u62ec\u53f7\u5305\u56f4\uff0c\u4e00\u7ec4\u6570\u503c\u7528\u5c0f\u62ec\u53f7\u5305\u56f4\uff0c\u6240\u6709\u6570\u5b57\u5916\u518d\u7528\u5c0f\u62ec\u53f7\u5305\u56f4\u3002\u793a\u610f\u5982\u4e0b where (a,b) in ( (X,X),(Y,Y),....)<\/p>\n\n\n\n
gbase> select * from tt1;\n+------+------+------+\n| id | id2 | id3 |\n+------+------+------+\n| 0 | -110 | -129 |\n| 1 | -110 | -123 |\n| 2 | -110 | -110 |\n| 3 | -118 | -119 |\n| 4 | -110 | -119 |\n+------+------+------+\n5 rows in set (Elapsed: 00:00:00.01)\n\ngbase> select * from tt1 where (id,id2) in ((0,-110),(1,3));\n+------+------+------+\n| id | id2 | id3 |\n+------+------+------+\n| 0 | -110 | -129 |\n+------+------+------+\n1 row in set (Elapsed: 00:00:00.01)\n<\/code><\/pre>\n\n\n\n<\/span>\u5c11\u91cf\u6570\u636e\u5b50\u67e5\u8be2\u591a\u5217in<\/span><\/h2>\n\n\n\n\u5982\u679c\u6570\u503c\u7a0d\uff0c\u6bd4\u5982\u51e0\u5343\u4e2a\uff0c\u51e0\u4e07\u4e2a\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8be2\u7684\u683c\u5f0f\u3002 \u793a\u4f8b\u5982\u4e0b\uff1a
where (a,b) in (select a, b from XXX)<\/p>\n\n\n\n
\u5b9e\u9645\u4f8b\u5b50\u5982\u4e0b<\/p>\n\n\n\n
gbase> select * from tt1 where (id,id2) in (select id,id3 from tt1 where id<=2);\n+------+------+------+\n| id | id2 | id3 |\n+------+------+------+\n| 2 | -110 | -110 |\n+------+------+------+\n1 row in set (Elapsed: 00:00:00.11)\n<\/code><\/pre>\n\n\n\n<\/span>\u5927\u91cf\u6570\u636e\u591a\u5217in<\/span><\/h2>\n\n\n\n<\/span>\u5916\u90e8\u6570\u636e\u6765\u6e90<\/span><\/h3>\n\n\n\n\u5982\u679c\u6570\u636e\u662f\u4ece\u5176\u5b83\u73af\u5883\u83b7\u53d6\u7684\uff0c\u90a3\u4e48\u5efa\u8bae\u521b\u5efa\u4e34\u65f6\u8868\uff0c\u5c06\u6570\u636einsert\u6216\u8005load\u8fdb\u53bb\uff0c\u7136\u540e\u6309\u7167JOIN\u7684\u65b9\u5f0f\u8fdb\u884c\u64cd\u4f5c<\/p>\n\n\n\n
gbase> create temporary table tmp_tt1(id int, id2 int);\nQuery OK, 0 rows affected (Elapsed: 00:00:01.10)\n\ngbase> insert into tmp_tt1 values(0,-110),(1,3);\nQuery OK, 2 rows affected (Elapsed: 00:00:00.44)\nRecords: 2 Duplicates: 0 Warnings: 0\n\ngbase> select a.* from tt1 a ,(select id,id2 from tmp_tt1) b where a.id=b.id and a.id2=b.id2;\n+------+------+------+\n| id | id2 | id3 |\n+------+------+------+\n| 0 | -110 | -129 |\n+------+------+------+\n1 row in set (Elapsed: 00:00:00.06)\n\ngbase> drop temporary table tmp_tt1;\nQuery OK, 0 rows affected (Elapsed: 00:00:00.19)\n\ngbase>\n<\/code><\/pre>\n\n\n\n<\/span>\u5e93\u5185\u6570\u636e\u6765\u6e90<\/span><\/h3>\n\n\n\n\u6570\u636e\u5728\u5e93\u5185\uff0c\u76f4\u63a5JOIN\u5373\u53ef<\/p>\n\n\n\n
gbase> select a.* from tt1 a ,(select id,id3 from tt1 where id<=2) b where a.id=b.id and a.id2=b.id3;\n+------+------+------+\n| id | id2 | id3 |\n+------+------+------+\n| 2 | -110 | -110 |\n+------+------+------+\n1 row in set (Elapsed: 00:00:00.08)\n<\/code><\/pre>","protected":false},"excerpt":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a\u652f\u6301in\u7684\u67e5\u8be2\u6761\u4ef6\uff0c\u5305\u62ec\u5355\u5217\u548c\u591a\u5217\u3002\u672c\u6587\u5bf9\u591a\u5217in\u7684\u5199\u6cd5\u548c\u6ce8\u610f\u4e8b\u9879\u8fdb\u884c\u4e86\u6d4b\u8bd5\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-2311","post","type-post","status-publish","format-standard","hentry","category-gbase8a"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/2311","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=2311"}],"version-history":[{"count":10,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/2311\/revisions"}],"predecessor-version":[{"id":2321,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/2311\/revisions\/2321"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=2311"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=2311"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=2311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}