• sqlserver查询表中所有字段信息


    精简
    在这里插入图片描述

    SELECT 
        字段名     = a.name,
        主键       = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in (
                         SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√' else '' end,
        类型       = b.name,
        字段说明   = isnull(g.[value],'')
    FROM syscolumns a
    left join systypes b on a.xusertype=b.xusertype
    inner join sysobjects d on a.id=d.id  and d.xtype='U' and  d.name<>'dtproperties'
    left join sys.extended_properties   g on a.id=G.major_id and a.colid=g.minor_id  
    where d.name='area';   
    
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    详细sql
    在这里插入图片描述

    SELECT 
        表名       = case when a.colorder=1 then d.name else '' end,
        表说明     = case when a.colorder=1 then isnull(f.value,'') else '' end,
        字段序号   = a.colorder,
        字段名     = a.name,
        标识       = case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,
        主键       = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in (
                         SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√' else '' end,
        类型       = b.name,
        占用字节数 = a.length,
        长度       = COLUMNPROPERTY(a.id,a.name,'PRECISION'),
        小数位数   = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
        允许空     = case when a.isnullable=1 then '√'else '' end,
        默认值     = isnull(e.text,''),
        字段说明   = isnull(g.[value],'')
    FROM 
        syscolumns a
    left join 
        systypes b 
    on 
        a.xusertype=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  
    left join
    sys.extended_properties f
    on 
        d.id=f.major_id and f.minor_id=0
    where 
        d.name='表名'    --如果只查询指定表,加上此where条件,tablename是要查询的表名;去除where条件查询所有的表信息
    order by 
    
    
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  • 原文地址:https://blog.csdn.net/yinsefeixingchuan/article/details/132876017