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mysql查表语句_MySQL

Jun 01, 2016 pm 01:35 PM
mysql

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mysql查表语句

 

[sql] 

describe table_name;  

这个命令用来显示一个表格的结构  

+----------+-----------+------+-----+---------+-------+  

| Field    | Type      | Null | Key | Default | Extra |  

+----------+-----------+------+-----+---------+-------+  

| ID       | int(11)   | NO   | PRI | NULL    |       |  

| userName | char(20)  | NO   |     | NULL    |       |  

| password | char(20)  | NO   |     | NULL    |       |  

| niName   | char(20)  | NO   |     | NULL    |       |  

| sex      | char(10)  | NO   |     | NULL    |       |  

| phone    | char(20)  | YES  |     | NULL    |       |  

| address  | char(100) | YES  |     | NULL    |       |  

+----------+-----------+------+-----+---------+-------+  

  

和这个命令可以实现同样效果的是:  

show columns from table_name;  

  

show create table table_name;//显示某个表格被创建时所用的SQL语句  

  

create table user  | CREATE TABLE `user` (  

  `ID` int(11) NOT NULL,  

  `userName` char(20) NOT NULL,  

  `password` char(20) NOT NULL,  

  `niName` char(20) NOT NULL,  

  `sex` char(10) NOT NULL,  

  `phone` char(20) DEFAULT NULL,  

  `address` char(100) DEFAULT NULL,  

  PRIMARY KEY (`ID`)  

) ENGINE=InnoDB DEFAULT CHARSET=latin1   

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