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  • sqlserver查询数据的所有表名和行数

    1.查询数据库中的所有数据库名:
    
     SELECT Name FROM Master..SysDatabases ORDER BY Name
    
    2.查询某个数据库中所有的表名:
     SELECT Name FROM SysObjects Where XType='U' ORDER BY Name
    
    3.查询表结构信息:
    SELECT (case when a.colorder=1 then d.name else null end) 表名, 
    a.colorder 字段序号,a.name 字段名,
    (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then ''else '' end) 标识, 
    (case when (SELECT count(*) FROM sysobjects 
    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) 主键,b.name 类型,a.length 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) 允许空, 
    isnull(e.text,'') 默认值,isnull(g.[value], ' ') AS [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
    left join sys.extended_properties f on d.id=f.class and f.minor_id=0
    where b.name is not null
    --WHERE d.name='要查询的表' --如果只查询指定表,加上此条件
    order by a.id,a.colorder
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  • 原文地址:https://www.cnblogs.com/linyijia/p/13671968.html
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