对于各种流行的数据库系统,如何列出表中的所有列?


当前回答

在MS SQL Server中调用以下代码:

sp_columns [tablename]

其他回答

Oracle (PL/SQL)

SELECT column_name
FROM user_tab_cols
WHERE table_name = 'myTableName'

MySQL

SHOW COLUMNS FROM table_name

只是对SQL Server中的其他选项做了一点小小的修正(模式前缀变得越来越重要了!):

SELECT name
  FROM sys.columns 
  WHERE [object_id] = OBJECT_ID(N'dbo.tablename');

例子:

select Table_name as [Table] , column_name as [Column] , Table_catalog as [Database], table_schema as [Schema]  from information_schema.columns
where table_schema = 'dbo'
order by Table_name,COLUMN_NAME

只是我的代码

对于mssql Server:

select COLUMN_NAME from information_schema.columns where table_name = 'tableName'

SQL Server

使用实例列出数据库中所有用户定义的表。

use [databasename]
select name from sysobjects where type = 'u'

列出一个表的所有列:

use [databasename]
select name from syscolumns where id=object_id('tablename')