<\/span><\/h3>\n<\/p>\n
<\/p>\n
1\u3001\u5f53\u8981\u8fde\u63a5\u672c\u5730\u7684\u6570\u636e\u5e93\u65f6\r\n\uff081\uff09mysql -uroot -p\u201c\u5bc6\u7801\u201d -S \/xx\/xxx\/x(\u60f3\u8981\u8fde\u63a5\u7684\u6570\u636e\u5e93\u7684\u5957\u63a5\u5b57\u7a0b\u5e8f\u6587\u4ef6)\r\n\uff082\uff09mysql -uroot -p\u201c\u5bc6\u7801\u201d -P \u201c\u7aef\u53e3\u201d(\u60f3\u8981\u8fde\u63a5\u7684\u6570\u636e\u5e93\u7684\u7aef\u53e3)\r\n\r\n2\u3001\u5f53\u8981\u8fde\u63a5\u5916\u5730\u7684\u6570\u636e\u5e93\u65f6\r\n\u57281\u7684\u57fa\u7840\u4e0a\u5e26\u4e0a-h ip\u5730\u5740<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>1.2 \u6570\u636e\u5e93\u8fdb\u53bb\u540e\u4fee\u6539\u5bc6\u7801\u7684\u64cd\u4f5c<\/span><\/h3>\n<\/p>\n
<\/p>\n
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('3307');\r\nFLUSH PRIVILEGES;<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>1.3 \u6570\u636e\u5e93\u7684\u521b\u5efa<\/span><\/h3>\n<\/p>\n
<\/p>\n
create database \u6570\u636e\u5e93\u540d charset utf8mb4\uff1b<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>1.4 \u6570\u636e\u5e93\u64cd\u4f5c\u7684\u589e\u5220\u6539\u67e5<\/span><\/h3>\n<\/p>\n
<\/p>\n
1\u3001\u5e93\r\n\r\n\u589e\r\ncreate database db1 charset utf8mb4;\r\n\r\n\u6539\r\n# \u6539\u6570\u636e\u5e93\u6ca1\u529e\u6cd5\u6539\u540d\u5b57\uff0c\u4f46\u662f\u53ef\u4ee5\u6539\u5b57\u7b26\u7f16\u7801\r\nalter database db1 charset gbk;\r\n\r\n\u67e5\r\nshow create database db1;\r\n\r\n\u5220\r\n\r\ndrop database db1;\r\n\r\n--------------------------\r\n2\u3001\u8868\r\ncreate database db1;\r\nuse db1;\r\n\r\n\u589e\r\ncreate table t1(id int,name varchar(16));\r\n\r\n\u6539\r\n# \u6539\u8868\u7684\u5b57\u6bb5\uff0c\u4e0d\u80fd\u6539\u5185\u5bb9\r\nalter table t1 modify name varchar(20);\r\n\r\n\u67e5\r\n# \u67e5\u770b\u5f53\u524d\u5e93\u4e0b\u7684\u8868\u90fd\u6709\u54ea\u4e9b\r\nshow tables;\r\n# \u67e5\u770b\u8868t1\u7684\u5185\u5bb9\r\ndesc t1;\r\n# \u5c55\u793a\u521b\u5efa\u7684\u8868t1\r\nshow create table t1;\r\n\r\n\u5220\r\n\r\ndrop table t1;\r\n\r\n------------------------------\r\n3\u3001\u8bb0\u5f55\r\ncreate database db1;\r\nuse db1;\r\ncreate table t1(id int,name varchar(16));\r\n\r\n\u589e\r\ninsert db1.t1 values(1,\"egon\"),(2,\"tom\"),(3,\"jack\");\r\ninsert db1.t1(name,id) values(\"lili\",4);\r\ninsert db1.t1(id) values(5);\r\n\r\n\u6539\r\nupdate db1.t1 set name=\"JACK\" where id=3;\r\n\r\n\u67e5\r\nselect * from db1.t1;\r\nselect id,name from db1.t1;\r\nselect id,name from db1.t1 where id=3;\r\nselect id,name from db1.t1 where id<3;\r\n\r\n\u5220\r\ndelete from db1.t1 where id=3;\r\n# \u6e05\u7a7a\u8868\r\ndelete from db1.t1; ------\u4e0d\u8981\u8fd9\u4e48\u505a\uff0c\u65e0\u6cd5\u505a\u5230\u5f7b\u5e95\u8fd8\u539f\r\ntruncate db1.t1;<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>1.5 \u8868\u8bed\u6cd5<\/span><\/h3>\n<\/p>\n
<\/p>\n
create table \u8868\u540d(\r\n\u5b57\u6bb5\u540d1 \u7c7b\u578b[(\u5bbd\u5ea6) \u7ea6\u675f\u6761\u4ef6],\r\n\u5b57\u6bb5\u540d2 \u7c7b\u578b[(\u5bbd\u5ea6) \u7ea6\u675f\u6761\u4ef6],\r\n\u5b57\u6bb5\u540d3 \u7c7b\u578b[(\u5bbd\u5ea6) \u7ea6\u675f\u6761\u4ef6]\r\n);\r\n\r\n\u6ce8\u610f\uff1a\r\n1\u3001\u5728\u540c\u4e00\u5f20\u8868\u4e2d\uff0c\u5b57\u6bb5\u540d\u662f\u4e0d\u80fd\u76f8\u540c\u7684\r\n2\u3001\u5bbd\u5ea6\u548c\u7ea6\u675f\u6761\u4ef6\u53ef\u9009\r\n3\u3001\u5b57\u6bb5\u540d\u548c\u7c7b\u578b\u662f\u5fc5\u987b\u7684<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>\u4e8c \u7cfb\u7edf\u6570\u636e\u5e93<\/span><\/h2>\n<\/p>\n
<\/p>\n
\n- information_schema:\u865a\u62df\u5e93\uff0c\u4e0d\u5360\u7528\u78c1\u76d8\u7a7a\u95f4\uff0c\u5b58\u50a8\u7684\u6570\u636e\u5e93\u542f\u52a8\u540e\u7684\u4e00\u4e9b\u53c2\u6570\uff0c\u5982\u7528\u6237\u8868\u4fe1\u606f\u3001\u5217\u8868\u4fe1\u606f\u3001\u6743\u9650\u4fe1\u606f\u3001\u5b57\u7b26\u4fe1\u606f<\/li>\n
- performance_schema:MYSQL5.5\u5f00\u542f\u65b0\u589e\u7684\u7b2c\u4e00\u4e2a\u6570\u636e\u5e93\uff1a\u4e3b\u8981\u7528\u4e8e\u6536\u96c6\u6570\u636e\u5e93\u670d\u52a1\u5668\u6027\u80fd\u53c2\u6570\uff0c\u8bb0\u5f55\u5904\u7406\u67e5\u8be2\u8bf7\u6c42\u65f6\u53d1\u9001\u5230\u5404\u79cd\u4e8b\u4ef6\u3001\u9501\u7b49\u73b0\u8c61<\/li>\n
- mysql\uff1a\u6388\u6743\u5e93\uff0c\u4e3b\u8981\u5b58\u50a8\u7cfb\u7edf\u7528\u6237\u7684\u6743\u9650\u4fe1\u606f<\/li>\n
- test\uff1aMYSQL\u6570\u636e\u5e93\u7cfb\u7edf\u81ea\u52a8\u521b\u5efa\u7684\u6d4b\u8bd5\u6570\u636e\u5e93<\/li>\n<\/ul>\n
<\/p>\n
<\/p>\n
<\/span>\u4e09 \u5b58\u50a8\u5f15\u64ce<\/span><\/h2>\n<\/p>\n
<\/p>\n
<\/span>3.1 \u5e38\u7528\u7684\u5b58\u50a8\u5f15\u64ce\u6709<\/span><\/h3>\n<\/p>\n
<\/p>\n
\n- \n
InnoDB(\u6700\u5e38\u7528)<\/p>\n
<\/p>\n
<\/p>\n
\u7279\u70b9\uff1a\r\n1\u3001\u4e8b\u52a1\uff1a\u4e00\u7ec4\u64cd\u4f5c\uff0c\u8981\u4e48\u5168\u90e8\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u5931\u8d25\u3002\r\n\r\n2\u3001\u884c\u7ea7\u9501\uff1ainnodb\u652f\u6301\u884c\u7ea7\u9501\uff0cmyisam\u662f\u8868\u7ea7\u9501\uff0c\u9501\u7684\u9897\u7c92\u5ea6\u8d8a\u5c0f\u5e76\u53d1\u80fd\u529b\u8d8a\u5f3a\r\n\u884c\u7ea7\u9501 = \u4fee\u6539\u6570\u636e\u65f6\uff0c\u53ea\u9501\u4f4f\u90a3\u4e00\u884c\uff0c\u5176\u4ed6\u884c\u4e0d\u53d7\u5f71\u54cd\u3002\r\n\u8868\u7ea7\u9501 = \u4fee\u6539\u6570\u636e\u65f6\uff0c\u9501\u4f4f\u6574\u5f20\u8868\uff0c\u8c01\u90fd\u522b\u60f3\u52a8\u3002\r\n\r\n3\u3001\u5916\u952e\uff1a\u5916\u952e = \u5f3a\u5236\u8981\u6c42\uff1aA \u8868\u7684\u67d0\u4e2a\u5b57\u6bb5\u7684\u503c\uff0c\u5fc5\u987b\u5728 B \u8868\u7684\u4e3b\u952e\u91cc\u5b58\u5728\u3002\r\n\r\nt2.frm\uff1a\u8868\u7ed3\u6784\r\nt2.ibd\uff1a\u6570\u636e+\u7d22\u5f15<\/code><\/pre>\n<\/li>\n
- \n
MyISAN<\/p>\n
<\/p>\n
<\/p>\n
t1.frm\uff1a\u8868\u7ed3\u6784\r\nt1.MYD\uff1a\u6570\u636e\r\nt1.MYI\uff1a\u7d22\u5f15<\/code><\/pre>\n<\/li>\n
- \n
MEMORY<\/p>\n
<\/li>\n
- \n
BLACKHOLE<\/p>\n
<\/li>\n<\/ul>\n
<\/p>\n
<\/p>\n
<\/span>3.2 \u4fee\u6539\u5b58\u50a8\u5f15\u64ceinnodb\uff0c\u4f7f\u5176\u5404\u8868\u72ec\u7acb\u4e3a\u4e00\u4e2a\u6587\u4ef6\u5939<\/span><\/h3>\n<\/p>\n
<\/p>\n
\u4fee\u6539innodb\u5f15\u64ce\u5185\u5bb9\uff0c\u8ba9\u5176\u4f7f\u7528\u6b64\u5f15\u64ce\u4fdd\u5b58\u7684\u8868\u90fd\u81ea\u5df1\u4e3a\u4e00\u4e2a\u6587\u4ef6\u5939\uff0c\u800c\u4e0d\u662f\u5168\u90e8\u90fd\u653e\u5728\u4e00\u4e2a\u6587\u4ef6\u5939<\/p>\n
<\/p>\n
<\/p>\n
\u5728\u6570\u636e\u5e93\u7684\u914d\u7f6e\u6587\u4ef6\u52a0\u5165\u5982\u4e0b\u5185\u5bb9\r\nvim \/etc\/my.cnf\r\n[mysqld]\r\ndefault-storage-engine=innodb\r\ninnodb_file_per_table=1<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>\u56db \u6570\u636e\u7684\u7c7b\u578b<\/span><\/h2>\n<\/p>\n
<\/p>\n
<\/span>4.1 \u6574\u6570\u7c7b\u578b<\/span><\/h3>\n<\/p>\n
<\/p>\n
\u53ea\u7528int\u5373\u53ef\r\nint()\u5185\u7684\u662f\u663e\u793a\u5bbd\u5ea6\r\n\u5176\u4ed6\u7684\u624d\u662f\u9650\u5236\u5bbd\u5ea6<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>4.2 \u6d6e\u70b9\u6570\u7c7b\u578b<\/span><\/h3>\n<\/p>\n
<\/p>\n
\u6d6e\u70b9\u7c7b\u578b\uff1aFLOAT(255,30) DOUBLE(255,30) DECIMAL(65,30)\r\n\u8fd9\u51e0\u4e2a\u7cbe\u51c6\u5ea6\u7531\u4f4e\u5230\u9ad8\uff0c\u4f46\u662fFLOAT\u5728\u65e5\u5e38\u4e2d\u8db3\u591f\u4f7f\u7528\uff0c\u9664\u975e\u5bf9\u7cbe\u5ea6\u8981\u6c42\u6781\u9ad8\u7684\u573a\u666f\r\n\u4f5c\u7528\uff1a\u5b58\u50a8\u85aa\u8d44\u3001\u8eab\u9ad8\u3001\u4f53\u91cd\u3001\u4f53\u8d28\u53c2\u6570\u7b49\r\n\r\n\u6d6e\u70b9\u6570\u540e\u9762\uff08m\uff0cn\uff09\u5185\u7684\u53c2\u6570\u4e2dm\u662f\u6570\u5b57\u603b\u4e2a\u6570\uff0cn\u662f\u5c0f\u6570\u70b9\u540e\u4e2a\u6570\u3002m\u6700\u5927\u503c\u4e3a255\uff0cn\u6700\u5927\u503c\u4e3a30<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>4.3 \u4f4d\u7c7b\u578b\uff08\u4e86\u89e3\uff09<\/span><\/h3>\n<\/p>\n
<\/p>\n
BIT\u53ef\u4ee5\u7528\u6765\u5b58\u653e\u591a\u4f4d\u4e8c\u8fdb\u5236\u6570\uff0cM\u8303\u56f4\u4ece1~64,\u5982\u679c\u4e0d\u5199\u9ed8\u8ba4\u4e3a1\u4f4d\r\n\u6ce8\u610f\uff1a\u5bf9\u4e8e\u4f4d\u5b57\u6bb5\u9700\u8981\u4f7f\u7528\u51fd\u6570\u8bfb\u53d6\r\nbin() \u663e\u793a\u4e3a\u4e8c\u8fdb\u5236\r\nhex() \u663e\u793a\u4e3a\u5341\u516d\u8fdb\u5236<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>4.4 \u65e5\u671f\u7c7b\u578b<\/span><\/h3>\n<\/p>\n
<\/p>\n
create table t13(\r\n id int,\r\n name varchar(10), \r\n reg_time datetime, #\u5e74\u6708\u65e5\u65f6\u5206\u79d2\r\n class_time time, #\u65f6\u5206\u79d2\r\n born_year date #\u5e74\u6708\u65e5\r\n );\r\n\r\n\u6ce8\u610f\uff1a\r\n1\u3001datetime\u7684\u65e5\u671f\u8303\u56f4\u662f1001-9999\u5e74\uff0ctimestamp\u7684\u65f6\u95f4\u8303\u56f4\u662f1970-2038\u5e74\r\n2\u3001datetime\u7684\u5b58\u50a8\u65f6\u95f4\u4e0e\u65f6\u533a\u65e0\u5173\uff0ctimestamp\u5b58\u50a8\u65f6\u95f4\u4e0e\u65f6\u533a\u6709\u5173\uff0c\u663e\u793a\u7684\u503c\u4e5f\u4f9d\u8d56\u4e0e\u65f6\u533a\r\n3\u3001datetime\u4f7f\u75288\u5b57\u8282\u7684\u5b58\u50a8\u7a7a\u95f4\uff0ctimestamp\u53ea\u75284\u5b57\u8282\uff0c\u56e0\u6b64\u7a7a\u95f4\u5229\u7528\u7387\u66f4\u9ad8\r\n4\u3001datetime\u9ed8\u8ba4\u503c\u4e3anull\uff0ctimestamp\u7684\u5b57\u6bb5\u9ed8\u8ba4\u4e0d\u4e3a\u7a7a\uff0c\u9ed8\u8ba4\u503c\u4e3a\u5f53\u524d\u7684\u65f6\u95f4<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>4.5 \u5b57\u7b26\u4e32\u7c7b\u578b<\/span><\/h3>\n<\/p>\n
<\/p>\n
1\u3001char\u5b9a\u957f<\/p>\n
<\/p>\n
<\/p>\n
\u5047\u5982\u5b9a\u4e3a4\u4e2a\u5b57\u7b26\uff0c\u90a3\u4e48\u5982\u679c\u8f93\u5165\u7684\u5b57\u7b26\u6570\u4e0d\u8db34\u4e2a\uff0c\u4f1a\u88ab\u7a7a\u683c\u6765\u8865\u9f50\r\n\u8fd9\u6837\uff0c\u6bcf\u6b21\u8bfb\u53d6\u4e5f\u662f4\u4e2a\u8fd9\u6837\u8bfb\u53d6\uff0c\u4fdd\u8bc1\u6570\u636e\u51c6\u786e\u6027<\/code><\/pre>\n<\/p>\n
<\/p>\n
2\u3001varchar\u53d8\u957f<\/p>\n
<\/p>\n
<\/p>\n
varchar\u4f1a\u5728\u5b58\u50a8\u7684\u5b57\u7b26\u4e32\u524d\u9762\u52a0\u4e00\u4e2a\u6570\u636e\u5934\uff0c\u91cc\u9762\u5b58\u50a8\u7740\u8fd9\u4e2avarchar\u7c7b\u578b\u7684\u5b57\u7b26\u4e32\u662f\u591a\u5c11\u4f4d<\/code><\/pre>\n<\/p>\n
<\/p>\n
3\u3001\u9762\u8bd5\u95ee<\/p>\n
<\/p>\n
<\/p>\n
\u5173\u4e8e\u8fd9\u4e8c\u8005\u7528\u8c01\uff0c\u8981\u5206\u60c5\u51b5\u8003\u8651\uff0c\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u662f\u7528varchar<\/p>\n
<\/p>\n
<\/p>\n
<\/span>4.6 \u679a\u4e3e\u7c7b\u578b\u4e0e\u96c6\u5408\u7c7b\u578b<\/span><\/h3>\n<\/p>\n
<\/p>\n
\u5b57\u6bb5\u7684\u503c\u53ea\u80fd\u5728\u7ed9\u5b9a\u8303\u56f4\u4e2d\u9009\u62e9\uff0c\u5982\u5355\u9009\u6846\uff0c\u591a\u9009\u6846\r\nenum\u5355\u9009\uff0c\u53ea\u80fd\u7ed9\u5b9a\u7684\u8303\u56f4\u5185\u9009\u4e00\u4e2a\u503c\r\nset\u591a\u9009\uff0c\u5728\u7ed9\u5b9a\u7684\u8303\u56f4\u5185\u53ef\u4ee5\u9009\u62e9\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u503c<\/code><\/pre>\n<\/p>\n
<\/p>\n
<\/span>\u4e94 \u8868\u7684\u5b8c\u6574\u6027\u7ea6\u675f<\/span><\/h2>\n<\/p>\n
<\/p>\n
\u7ea6\u675f\u6761\u4ef6\u548c\u6570\u636e\u7c7b\u578b\u7684\u5bbd\u5ea6\u4e00\u6837\uff0c\u90fd\u662f\u53ef\u9009\u53c2\u6570<\/p>\n
<\/p>\n
<\/p>\n
\u4f5c\u7528\uff1a\u7528\u4e8e\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027<\/p>\n
<\/p>\n
<\/p>\n
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