• 用Sql语句查询表结构


    关于表结构的查询可以用sp_help,但是查出来的比较凌乱,而且列名还是英文的,不方便拷贝。

    自己根据系统表写了一个查询表结构的语句,方便使用

    DECLARE @TableName VarChar(1000)
    SET @TableName = '要查询表结构的表名'
    SELECT 列名 = a.name ,
            类型 = CASE
                 WHEN b.name = 'numeric' THEN b.name + '(' + CAST(a.xprec AS VarChar(5)) + ', ' + CAST(a.xscale AS VarChar(5)) + ')'
                 WHEN b.name = 'varchar' THEN b.name + '(' + CAST(a.length AS VarChar(10)) + ')'
                 WHEN b.name = 'datetime' THEN b.name
                 WHEN b.name = 'int' THEN b.name
                 WHEN b.name = 'bit' THEN b.name
                 WHEN b.name = 'smallint' THEN b.name
                 END ,
            --类型 = b.name ,
            --长度 = a.length ,
            --精度级别 = a.xprec ,
            --小数位数 = ISNULL(a.xscale , '') ,
            标识 = CASE WHEN COLUMNPROPERTY(a.id , a.name , 'IsIdentity') = 1 THEN '√' ELSE '' END ,
            主键 = CASE WHEN c.name IS NULL THEN '' ELSE '√' END ,
            允许空Null = CASE WHEN isnullable = 1 THEN '√' ELSE '' END ,
            默认值 = ISNULL(d.text , '') ,
            解释说明 = ''
    FROM syscolumns a
         INNER JOIN systypes b ON a.xtype = b.xtype
         LEFT JOIN(SELECT d.name , d.id , d.colid
                   FROM sysobjects a
                        INNER JOIN sysindexes b ON a.parent_obj = b.id
                                               AND a.name = b.name
                                               AND a.xtype = 'PK'
                        INNER JOIN sysindexkeys c ON b.id = c.id
                                                 AND b.indid = c.indid
                        INNER JOIN syscolumns d ON c.id = d.id
                                               AND c.colid = d.colid
                   WHERE OBJECT_NAME(a.parent_obj) = @TableName)c ON a.id = c.id
                                                                 AND a.colid = c.colid
         LEFT JOIN syscomments d ON a.cdefault = d.id
    WHERE OBJECT_NAME(a.id) = @TableName
    ORDER BY a.colid
    

      对于查询中用到的一些系统表跟表中的列名的意思,自己去查sql server的联机丛书,相信你能够看明白。

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  • 原文地址:https://www.cnblogs.com/Home-Root/p/3730189.html
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