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查询表、字段、类型、是否主键、长度、小数位、是否允许空、默认值等详细查询

时间:2018-10-11 01:48:01      阅读:231      评论:0      收藏:0      [点我收藏+]

标签:alt   表名   http   dex   index   ide   xtend   字段   字段名   

小果

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SELECT   
 (case when a.colorder=1 then d.name else ‘‘ end) as 表名,--如果表名相同就返回空  
     a.colorder as 字段序号,  
     a.name as 字段名,  
     (case when COLUMNPROPERTY( a.id,a.name,IsIdentity)=1 then else ‘‘ end) as 标识,  
     (case when (SELECT count(*) FROM sysobjects--查询主键  
                     WHERE (name in  
                             (SELECT name FROM sysindexes   
                             WHERE (id = a.id)  AND (indid in  
                                     (SELECT indid FROM sysindexkeys  
                                       WHERE (id = a.id) AND (colid in  
                                         (SELECT colid FROM syscolumns  
                                         WHERE (id = a.id) AND (name = a.name))  
                         )))))   
         AND (xtype = PK))>0 then  else ‘‘ end) as 主键,--查询主键END  
 b.name as 类型,  
 a.length as 占用字节数,  
 COLUMNPROPERTY(a.id,a.name,PRECISION) as  长度,  
 isnull(COLUMNPROPERTY(a.id,a.name,Scale),0) as 小数位数,  
 (case when a.isnullable=1 then else ‘‘ end) as 允许空,  
 isnull(e.text,‘‘) as 默认值,  
 isnull(g.[value],‘‘) AS 字段说明   
 FROM syscolumns a left join systypes b   
 on a.xtype=b.xusertype  
 inner join sysobjects d   
 on a.id=d.id and d.xtype=U and d.name<>dtproperties  
 left join syscomments e  
 on a.cdefault=e.id  
 left join sys.extended_properties g  
 on a.id=g.major_id AND a.colid = g.minor_id   
 order by a.id,a.colorder

 

查询表、字段、类型、是否主键、长度、小数位、是否允许空、默认值等详细查询

标签:alt   表名   http   dex   index   ide   xtend   字段   字段名   

原文地址:https://www.cnblogs.com/ainidewen/p/9769858.html

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