sql server中查看列详细信息的语句

sql server数据库的列信息查看的方法是最常用的操作方法之一，本文为您详述了怎么使用T-Sql语句， 在sql server 2005中提取一个数据表的列的详细信息的方法，并附sql server的开发实例，供您参考，希望对您有所帮助。

下面介绍的是名为sp_GetColumnsInfo的存储过程，示例中使用了微软提供的AdventureWorks数据库。

USE AdventureWorks;

–Method I: Using System Store Procedure

EXEC SP_COLUMNS @table_name = N’Employee’
GO

–Method II: Using T-Sql Statement

–If existed, delete the store procedure

IF EXISTS (

  SELECT *

    FROM INFORMATION_SCHEMA.ROUTINES

   WHERE SPECIFIC_SCHEMA = N’dbo’

     AND SPECIFIC_NAME = N’sp_GetColumnsInfo’

)

   DROP PROCEDURE [dbo].sp_GetColumnsInfo

GO

–create store procedure, two parameters schema name and table name

CREATE PROCEDURE sp_GetColumnsInfo

@schema NVARCHAR(100),

@tablename NVARCHAR(100)

AS

BEGIN#p#

      SELECT

            [columns].NAME AS [Name],

            [usertype].NAME AS [DataType],

            ISNULL([basetype].NAME, N”) AS [SystemType],

            CAST(CASE WHEN [basetype].NAME IN (N’nchar’, N’nvarchar’) AND [columns].max_length <> -1 THEN

                  [columns].max_length/2 ELSE [columns].max_length END AS INT) AS [Length],

            CAST([columns].PRECISION AS INT) AS [NumericPrecision]

      FROM

            SYS.TABLES AS [table]

            INNER JOIN SYS.ALL_COLUMNS AS [columns] ON [columns].OBJECT_ID=[table].OBJECT_ID

            LEFT OUTER JOIN SYS.TYPES AS [usertype] ON [usertype].user_type_id = [columns].user_type_id

            LEFT OUTER JOIN SYS.TYPES AS [basetype] ON [basetype].user_type_id = [columns].system_type_id and [basetype].user_type_id = [basetype].system_type_id

      WHERE

            ([table].NAME=@tablename and SCHEMA_NAME([table].schema_id)=@schema)

      ORDER BY

            [columns].column_id ASC

END

EXEC sp_GetColumnsInfo  @schema = N’HumanResources’, @tablename = N’Employee’

结果显示

(16 row(s) affected)
 

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