{"id":201,"date":"2024-12-17T19:03:41","date_gmt":"2024-12-17T19:03:41","guid":{"rendered":"https:\/\/www.isvmspace.com\/?p=201"},"modified":"2024-12-17T19:03:41","modified_gmt":"2024-12-17T19:03:41","slug":"mysql-%e6%95%b0%e6%8d%ae%e6%93%8d%e4%bd%9c%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.isvmspace.com\/?p=201","title":{"rendered":"Mysql-\u6570\u636e\u64cd\u4f5c\u8be6\u89e3-\u589e\u5220\u6539"},"content":{"rendered":"

\u8868\u7ed3\u6784\u6837\u4f8b<\/p>\n

DROP TABLE IF EXISTS `employee`;\nCREATE TABLE `employee` (\n  `id` bigint NOT NULL AUTO_INCREMENT,\n  `mobile` varchar(20) DEFAULT NULL COMMENT '\u624b\u673a\u53f7',\n  `name` varchar(32) DEFAULT NULL COMMENT '\u59d3\u540d',\n  `gender` char(2) DEFAULT '\u672a\u77e5' COMMENT '\u6027\u522b',\n  `age` tinyint DEFAULT '0' COMMENT '\u5e74\u9f84',\n  `dept` varchar(32) DEFAULT NULL COMMENT '\u90e8\u95e8',\n  `post` varchar(32) DEFAULT NULL COMMENT '\u5c97\u4f4d',\n  `salary` decimal(6,2) DEFAULT '0.00' COMMENT '\u85aa\u8d44',\n  PRIMARY KEY (`id`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='\u96c7\u5458\u8868';\n\n<\/code><\/pre>\n
INSERT\u57fa\u672c\u8bed\u6cd5<\/h1>\n
INSERT VALUES \u7684\u8bed\u6cd5\u683c\u5f0f\u4e3a\uff1a<\/p>\n
INSERT INTO <table> ( <field1> , \u2026 ,<fieldN> )\nVALUES (<value1>,\u2026 , <valueN>) ;\n\n\u8bed\u6cd5\u8bf4\u660e\uff1a\n<table>\uff1a\u6307\u5b9a\u88ab\u64cd\u4f5c\u7684\u8868\u540d\u3002\n<field>\uff1a\u6307\u5b9a\u9700\u8981\u63d2\u5165\u6570\u636e\u7684\u5217\u540d\u3002\n<value>: \u8981\u63d2\u5165\u7684\u6570\u636e\u6e05\u5355, \u6570\u636e\u6e05\u5355\u4e2d\u6570\u636e\u7684\u987a\u5e8f\u8981\u548c\u5217\u7684\u987a\u5e8f\u76f8\u5bf9\u5e94\u3002\n\nINSERT INTO `employee` (`mobile`, `name`, `gender`, `age`, `dept`, `post`, `salary`) \nVALUES ( '13101010001', '\u5f20\u4e09', '\u7537', 24, '\u5e02\u573a\u90e8', '\u5e02\u573a\u603b\u76d1', 8888.88);\n-- \u63d2\u5165\u5168\u5217\u5b57\u6bb5\uff0c\u5217\u8868\u53ef\u7701\u7565\nINSERT INTO `employee`  VALUES (NULL,  '13101020001', '\u5f20\u4e09\u4e30', '\u7537', 30, '\u5e02\u573a\u90e8', '\u5e02\u573a\u603b\u76d1', 9999.99);\n<\/code><\/pre>\n
INSERT SET \u7684\u8bed\u6cd5\u683c\u5f0f\u4e3a\uff1a<\/p>\n
INSERT INTO <table>\nSET <field1> = <value1>,\u2026 , <fieldN> = <valueN> ;\n\u8bed\u6cd5\u8bf4\u660e\uff1a\n<table>\uff1a\u6307\u5b9a\u88ab\u64cd\u4f5c\u7684\u8868\u540d\u3002\n<field>\uff1a\u6307\u5b9a\u9700\u8981\u63d2\u5165\u6570\u636e\u7684\u5217\u540d\u3002\n<value>: \u8981\u63d2\u5165\u7684\u5b57\u6bb5\u5bf9\u5e94\u7684\u6570\u636e\u3002\n\nINSERT INTO `employee` \nSET mobile = '13101010002', name = '\u674e\u56db', gender = '\u5973', dept = '\u9500\u552e\u90e8', post = '\u9500\u552e\u987e\u95ee';\n<\/code><\/pre>\n
INSERT INTO \u2026 SELECT ... FROM \u7684\u8bed\u6cd5\u683c\u5f0f\u4e3a\uff1a<\/p>\n
INSERT INTO <table> ( <field1> , \u2026 ,<fieldN> )\nSELECT <field1> , \u2026 ,<fieldN> FROM <table_2>;\n\u8bed\u6cd5\u8bf4\u660e\uff1a\n<table>\uff1a\u6307\u5b9a\u88ab\u64cd\u4f5c\u7684\u8868\u540d\u3002\n<field>\uff1a\u6307\u5b9a\u9700\u8981\u63d2\u5165\u6570\u636e\u7684\u5217\u540d\u3002\nSELECT .... FROM <table_2>: \u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u53d6\u51fa\u6570\u636e\uff0c\u7ed3\u679c\u96c6\u4e2d\u7684\u6bcf\u884c\u6570\u636e\u7684\u5b57\u6bb5\u6570\u3001\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b\u90fd\u5fc5\u987b\u4e0e\u88ab\u64cd\u4f5c\u7684\u8868\u5b8c\u5168\u4e00\u81f4\n\nINSERT INTO `employee_new`   (`id`, `mobile`, `name`, `gender`, `age`, `dept`, `post`, `salary`)\nSELECT `id`, `mobile`, `name`, `gender`, `age`, `dept`, `post`, `salary` FROM `employee`;\nINSERT INTO `employee_new` SELECT * FROM `employee`;\n<\/code><\/pre>\n
SELECT \u5b50\u53e5\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u67e5\u8be2\u5230\u7684\u7ed3\u679c\u96c6\uff0cINSERT \u8bed\u53e5\u5c06\u8fd9\u4e2a\u7ed3\u679c\u96c6\u63d2\u5165\u6307\u5b9a\u8868\u4e2d\uff0c\u7ed3\u679c\u96c6\u4e2d\u7684\u6bcf\u884c\u6570\u636e\u7684\u5b57\u6bb5\u6570\u3001\u5b57\u6bb5\u7684\u6570\u636e\u7c7b\u578b\u90fd\u5fc5\u987b\u4e0e\u88ab\u64cd\u4f5c\u7684\u8868\u5b8c\u5168\u4e00\u81f4\u3002<\/p>\n
CREATE TABLE employee_new LIKE employee;\n<\/code><\/pre>\n
UPDATE\u57fa\u672c\u8bed\u6cd5<\/h1>\n
UPDATE SET \u7684\u8bed\u6cd5\u683c\u5f0f\u4e3a\uff1a<\/p>\n
UPDATE <table>\nSET <field1> = <value1>,\u2026 , <fieldN> = <valueN>  WHERE <expression>;\n\u8bed\u6cd5\u8bf4\u660e\uff1a\n<table>\uff1a\u6307\u5b9a\u88ab\u64cd\u4f5c\u7684\u8868\u540d\u3002\n<field>\uff1a\u6307\u5b9a\u9700\u8981\u66f4\u65b0\u6570\u636e\u7684\u5217\u540d\u3002\n<value>: \u5f85\u4fee\u6539\u5b57\u6bb5\u7684\u6570\u636e\u503c\u3002\nWHERE <expression>: \u6761\u4ef6\u8868\u8fbe\u5f0f\n\nUPDATE employee SET age = 50 WHERE `name` = '\u738b\u4e8c';\n<\/code><\/pre>\n
\u6279\u91cf\u66f4\u65b0\uff1a
\n[\u65b9\u6cd51] REPLACE  INTO \uff1a
\n\u64cd\u4f5c\u672c\u8d28\u662f\u5bf9\u91cd\u590d\u7684\u8bb0\u5f55\u5148delete \u540einsert\uff0c\u5982\u679c\u66f4\u65b0\u7684\u5b57\u6bb5\u4e0d\u5168\u4f1a\u5c06\u7f3a\u5931\u7684\u5b57\u6bb5\u7f6e\u4e3a\u7f3a\u7701\u503c\u3002(*\u614e\u7528)<\/p>\n
REPLACE INTO employee (id, mobile, name, gender, age)\nVALUES\n(1, '13101010001', '\u5f20\u4e09', '\u7537',35),\n(2, '13101010005', 'TOM', '\u5973',22),\n(3, '13101010006', 'JACK', '\u672a\u77e5',31);\n<\/code><\/pre>\n
[\u65b9\u6cd52] INSERT INTO ...ON DUPLICATE KEY UPDATE\uff1a
\n    \u4e0d\u5b58\u5728\u5219\u63d2\u5165\uff0c\u5b58\u5728\u65f6\u53eaupdate\u91cd\u590d\u8bb0\u5f55\uff0c\u4e0d\u4f1a\u6539\u53d8\u5176\u5b83\u5b57\u6bb5\u3002<\/p>\n
INSERT INTO employee (id, mobile, name, gender, age)\nVALUES\n(1, '13101010001', '\u5f20\u4e09', '\u7537',35),\n(2, '13101010005', 'TOM Sing', '\u5973',22),\n(6, '13101010016', 'JACK Chow', '\u672a\u77e5',66)\nON DUPLICATE KEY UPDATE\nname = VALUES(name),\ngender = VALUES(gender);\n<\/code><\/pre>\n
[\u65b9\u6cd53]MySql \u81ea\u5e26\u8bed\u53e5\uff1a<\/p>\n
UPDATE <table>\nSET <field1> = CASE id WHEN <id1> THEN <value1> END ,\u2026 , <fieldN> = <valueN>  \nWHERE id IN (<id1>, ... ,<idN>);\n\u8bed\u6cd5\u8bf4\u660e\uff1a\n<table1>\uff1a\u6307\u5b9a\u88ab\u64cd\u4f5c\u7684\u8868\u540d\u3002\n<field>\uff1a\u6307\u5b9a\u9700\u8981\u66f4\u65b0\u6570\u636e\u7684\u5217\u540d\u3002\n<value>: \u5f85\u4fee\u6539\u5b57\u6bb5\u7684\u6570\u636e\u503c\u3002\n\nUPDATE employee SET age = CASE id WHEN 1 THEN 50  WHEN 2 THEN 33 ELSE 22 END\nWHERE id IN (1,2,3);\n<\/code><\/pre>\n
[\u65b9\u6cd54] \u5229\u7528\u5907\u4efd\u8868\u66f4\u65b0\uff1a
\n    \u5728\u6570\u636e\u8fc1\u79fb\u4e2d\uff0c\u5e38\u7528\u5230\u8be5\u65b9\u6cd5\u64cd\u4f5c\u6570\u636e\u3002 \uff08*\u5b57\u7b26\u96c6\u9700\u4fdd\u6301\u4e00\u81f4\uff09<\/p>\n
UPDATE employee e,employee_new ew\nSET e.gender = ew.gender, e.age = ew.age, ew.dept = e.dept\nWHERE e.id = ew.id;\n<\/code><\/pre>\n
DELETE\u57fa\u672c\u8bed\u6cd5<\/h1>\n
DELETE \u7684\u8bed\u6cd5\u683c\u5f0f\u4e3a\uff1a<\/p>\n
DELETE FROM <table> WHERE <expression>;\n\u8bed\u6cd5\u8bf4\u660e\uff1a\n<table>\uff1a\u6307\u5b9a\u88ab\u64cd\u4f5c\u7684\u8868\u540d\u3002\n<expression>: \u6761\u4ef6\u8868\u8fbe\u5f0f\uff0c\u5f53\u8868\u8fbe\u5f0f\u4e3a\u771f\uff08true\uff09\u65f6\uff0c\u5219\u5220\u9664\u6570\u636e\u3002\n\nDELETE FROM employee WHERE id = 6;\n<\/code><\/pre>\n
TRUNCATE\u57fa\u672c\u8bed\u6cd5<\/h1>\n
TRUNCATE \u7684\u8bed\u6cd5\u683c\u5f0f\u4e3a\uff1a<\/p>\n
TRUNCATE TABLE <table>;\n\u8bed\u6cd5\u8bf4\u660e\uff1a\n<table>\uff1a\u6307\u5b9a\u88ab\u64cd\u4f5c\u7684\u8868\u540d\u3002\n\nTRUNCATE TABLE employee;\n<\/code><\/pre>\n
truncate\u4e0edelete\u7684\u533a\u522b<\/h1>\n
\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"
\u8868\u7ed3\u6784\u6837\u4f8b DROP TABLE IF EXISTS `employee`; CREATE TABLE `em […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=\/wp\/v2\/posts\/201"}],"collection":[{"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=201"}],"version-history":[{"count":2,"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=\/wp\/v2\/posts\/201\/revisions"}],"predecessor-version":[{"id":203,"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=\/wp\/v2\/posts\/201\/revisions\/203"}],"wp:attachment":[{"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.isvmspace.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}