Question

我一直试图找出每个表中已取消激活的总行数。在我的数据库中，我有20个表，列为IsActive。

我已经尝试了下面的光标，但是收到的错误是无效的对象名称@Namee。

Create table #t
(
NoOfRows bigint,
)

Declare @Namee Varchar(500)
Declare @GetName Cursor
Set     @Getname = Cursor for 
Select table_name from information_Schema.columns
where column_name='isactive'Open @Getname
Fetch Next From @Getname into @Namee
While @@Fetch_Status=0
Begin 
insert into #t Select count(*) from @Namee where isactive=0
Fetch Next From @Getname into @Namee
End
Close @GetName
Deallocate @GetName
select * from #t

Answer 1

试试这个：

exec sp_msforeachtable '
if exists(
select * from sys.tables as t
join sys.columns as c on t.object_id = c.object_id
where t.name = ''?'' and c.name = ''IsActive'')

select count(*) 
from [?] 
where isactive=0'

Answer 2

虽然我没有对它们进行测试，但我会选择迈克或丹尼斯的答案。

然而，这里的问题是：

insert into #t Select count(*) from @Namee where isactive=0

你正在使用@Namee，就像它是一个表，但它实际上是一个带有表名的字符串。您必须动态构建SQL然后执行它：

exec 'insert into #t select count(*) from ' + @Namee + ' where isactive=0'

Answer 3

根据您的示例查询，这应该有效。它也比使用光标

快得多

select
    OBJECT_NAME(c.object_id) as table_name
,   p.row_count
from sys.columns c
 join sys.dm_db_partition_stats p
    on c.object_id = p.object_id
    and p.index_id < 2
where c.name = 'IsActive'

Answer 4

替换

insert into #t Select count(*) from @Namee where isactive=0

带

 exec ('insert into #t Select count(*) from ' + @Namee + ' where isactive=0')

查询根据列名查找表的行数？

4 个答案: