{"id":6348,"date":"2024-11-14T10:55:51","date_gmt":"2024-11-14T02:55:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6348\/"},"modified":"2024-11-14T10:55:51","modified_gmt":"2024-11-14T02:55:51","slug":"mysql%e6%9c%89%e5%87%a0%e7%a7%8d%e6%9f%a5%e8%af%a2%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6348\/","title":{"rendered":"mysql\u6709\u51e0\u79cd\u67e5\u8be2\u65b9\u6cd5"},"content":{"rendered":"

\n mysql\u67e5\u8be2\u65b9\u6cd5\u5305\u62ecselect\uff08\u4ece\u8868\u4e2d\u63d0\u53d6\u6570\u636e\uff09\u3001insert\uff08\u63d2\u5165\u65b0\u884c\uff09\u3001update\uff08\u4fee\u6539\u884c\u503c\uff09\u3001delete\uff08\u5220\u9664\u884c\uff09\u3001union\uff08\u5408\u5e76\u67e5\u8be2\u7ed3\u679c\uff09\u3001union all\uff08\u5408\u5e76\u5e76\u4fdd\u7559\u91cd\u590d\u884c\uff09\u3001intersect\uff08\u8fd4\u56de\u5171\u540c\u5b58\u5728\u7684\u884c\uff09\u548cexcept\uff08\u8fd4\u56de\u4ec5\u5b58\u5728\u4e8e\u7b2c\u4e00\u4e2a\u67e5\u8be2\u4e2d\u7684\u884c\uff09\u3002\n<\/p><\/blockquote>\n

\"mysql\u6709\u51e0\u79cd\u67e5\u8be2\u65b9\u6cd5\u63d2\u56fe\"<\/p>\n

MySQL \u67e5\u8be2\u65b9\u6cd5<\/strong><\/p>\n

MySQL \u4f5c\u4e3a\u4e00\u79cd\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u5f0f\u6765\u67e5\u8be2\u6570\u636e\uff0c\u5305\u62ec\uff1a<\/p>\n

1. SELECT \u8bed\u53e5<\/strong><\/p>\n

SELECT \u8bed\u53e5\u662f\u67e5\u8be2\u6570\u636e\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u5b83\u5141\u8bb8\u60a8\u4ece\u8868\u4e2d\u63d0\u53d6\u7279\u5b9a\u7684\u5217\u6216\u884c\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

SELECT <\u5217\u540d>\nFROM <\u8868\u540d>\n[WHERE <\u6761\u4ef6>]\n[GROUP BY <\u5217\u540d>]\n[HAVING <\u6761\u4ef6>]\n[ORDER BY <\u5217\u540d>]<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. INSERT \u8bed\u53e5<\/strong><\/p>\n
INSERT \u8bed\u53e5\u7528\u4e8e\u5411\u8868\u4e2d\u63d2\u5165\u65b0\u884c\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
INSERT INTO <\u8868\u540d> (<\u5217\u540d>)\nVALUES (<\u503c>)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. UPDATE \u8bed\u53e5<\/strong><\/p>\n
UPDATE \u8bed\u53e5\u7528\u4e8e\u4fee\u6539\u8868\u4e2d\u73b0\u6709\u884c\u7684\u503c\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
UPDATE <\u8868\u540d>\nSET <\u5217\u540d> = <\u65b0\u503c>\n[WHERE <\u6761\u4ef6>]<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
4. DELETE \u8bed\u53e5<\/strong><\/p>\n
DELETE \u8bed\u53e5\u7528\u4e8e\u4ece\u8868\u4e2d\u5220\u9664\u884c\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
DELETE FROM <\u8868\u540d>\n[WHERE <\u6761\u4ef6>]<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
5. UNION<\/strong><\/p>\n
UNION \u64cd\u4f5c\u7b26\u7528\u4e8e\u8fde\u63a5\u591a\u4e2a\u67e5\u8be2\u7684\u7ed3\u679c\u5f62\u6210\u4e00\u4e2a\u65b0\u7684\u7ed3\u679c\u96c6\u3002<\/p>\n
SELECT ...\nFROM ...\nUNION\nSELECT ...\nFROM ...<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
6. UNION ALL<\/strong><\/p>\n
UNION ALL \u64cd\u4f5c\u7b26\u4e0e UNION \u76f8\u4f3c\uff0c\u4f46\u5b83\u4e0d\u4f1a\u5220\u9664\u91cd\u590d\u7684\u884c\u3002<\/p>\n
SELECT ...\nFROM ...\nUNION ALL\nSELECT ...\nFROM ...<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
7. INTERSECT<\/strong><\/p>\n
INTERSECT \u64cd\u4f5c\u7b26\u7528\u4e8e\u8fd4\u56de\u540c\u65f6\u51fa\u73b0\u5728\u4e24\u4e2a\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u884c\u3002<\/p>\n
SELECT ...\nFROM ...\nINTERSECT\nSELECT ...\nFROM ...<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
8. EXCEPT<\/strong><\/p>\n
EXCEPT \u64cd\u4f5c\u7b26\u7528\u4e8e\u8fd4\u56de\u53ea\u51fa\u73b0\u5728\u7b2c\u4e00\u4e2a\u67e5\u8be2\u7ed3\u679c\u4e2d\uff0c\u800c\u4e0d\u5728\u7b2c\u4e8c\u4e2a\u67e5\u8be2\u7ed3\u679c\u4e2d\u7684\u884c\u3002<\/p>\n
SELECT ...\nFROM ...\nEXCEPT\nSELECT ...\nFROM ...<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u6709\u51e0\u79cd\u67e5\u8be2\u65b9\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
mysql\u67e5\u8be2\u65b9\u6cd5\u5305\u62ecselect\uff08\u4ece\u8868\u4e2d\u63d0\u53d6\u6570\u636e\uff09\u3001insert\uff08\u63d2\u5165\u65b0\u884c\uff09\u3001update\uff08\u4fee\u6539\u884c\u503c\uff09\u3001delete\uff08\u5220\u9664\u884c\uff09\u3001union\uff08\u5408\u5e76\u67e5\u8be2\u7ed3\u679c\uff09\u3001union all\uff08\u5408\u5e76\u5e76\u4fdd\u7559\u91cd\u590d\u884c\uff09\u3001intersect\uff08\u8fd4\u56de\u5171\u540c\u5b58\u5728\u7684\u884c\uff09\u548cexcept\uff08\u8fd4\u56de\u4ec5\u5b58\u5728\u4e8e\u7b2c\u4e00\u4e2a\u67e5\u8be2\u4e2d\u7684\u884c\uff09\u3002 MySQL \u67e5\u8be2\u65b9\u6cd5 MySQL \u4f5c\u4e3a\u4e00\u79cd\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u5f0f\u6765\u67e5\u8be2\u6570\u636e\uff0c\u5305\u62ec\uff1a 1. SELECT \u8bed\u53e5 SELECT \u8bed\u53e5\u662f\u67e5\u8be2\u6570\u636e\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u3002\u5b83\u5141\u8bb8\u60a8\u4ece\u8868\u4e2d\u63d0\u53d6\u7279\u5b9a\u7684\u5217\u6216\u884c\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a SELECT <\u5217\u540d> FROM <\u8868\u540d> [WHERE <\u6761\u4ef6>] [GROUP BY <\u5217\u540d>] [HAVING <\u6761\u4ef6>] [ORDER BY <\u5217\u540d>] \u767b\u5f55\u540e\u590d\u5236 2. INSERT \u8bed\u53e5 INSERT \u8bed\u53e5\u7528\u4e8e\u5411\u8868\u4e2d\u63d2\u5165\u65b0\u884c\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a INSERT INTO <\u8868\u540d> (<\u5217\u540d>) VALUES (<\u503c>) \u767b\u5f55\u540e\u590d\u5236 3. UPDATE \u8bed\u53e5 UPDATE \u8bed\u53e5\u7528\u4e8e\u4fee\u6539\u8868\u4e2d\u73b0\u6709\u884c\u7684\u503c\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a UPDATE <\u8868\u540d> SET <\u5217\u540d> = <\u65b0\u503c> [WHERE <\u6761\u4ef6>] \u767b\u5f55\u540e\u590d\u5236 4. DELETE \u8bed\u53e5 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6348","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6348"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6348\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}