使用MS SQL的另一个变体:

SELECT TYPE_NAME(system_type_id) 
FROM sys.columns 
WHERE name = 'column_name'
AND [object_id] = OBJECT_ID('[dbo].[table_name]');

由于有些人要求数据类型的精度，我想分享我为此目的而创建的脚本。

SELECT TABLE_NAME As 'TableName'
       COLUMN_NAME As 'ColumnName'
       CONCAT(DATA_TYPE, '(', COALESCE(CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, DATETIME_PRECISION, ''), IIF(NUMERIC_SCALE <> 0, CONCAT(', ', NUMERIC_SCALE), ''), ')', IIF(IS_NULLABLE = 'YES', ', null', ', not null')) As 'ColumnType'
FROM INFORMATION_SCHEMA.COLUMNS
WHERE -- ...
ORDER BY 'TableName', 'ColumnName'

这并不完美，但在大多数情况下都有效。

使用sql server

我认为在Microsoft SQL Server Management Studio中最简单和最有用的方法是:

EXEC [ServerName].[DatabaseName].dbo.sp_help 'TableName'

对于IBM DB2:

SELECT TYPENAME FROM SYSCAT.COLUMNS WHERE TABSCHEMA='your_schema_name' AND TABNAME='your_table_name' AND COLNAME='your_column_name'

USE [YourDatabaseName]
GO

SELECT column_name 'Column Name',
data_type 'Data Type'
FROM information_schema.columns
WHERE table_name = 'YourTableName'
GO

这将返回值Column Name，显示列的名称，以及这些列的数据类型(int, varchars等)。

使用这个查询

SELECT * FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'TABLE_NAME'
ORDER BY ORDINAL_POSITION