Question

我在第3列中有一个动态创建的SQL count（*）语句，其中表名是动态元素。我想将第3列中的SQL结果放入第4列中。如何做到这一点？

;with cteTables
as(
SELECT      c.name  AS 'ColumnName'
            ,t.name AS 'TableName'
            ,statmnt = 'select count(*) cnt from '+t.name+' where sq = 0'
            ,Totals = 0
FROM        sys.columns c
JOIN        sys.tables  t   ON c.object_id = t.object_id
WHERE       c.name = 'SQ'
), cteTots
as
(
select ColumnName,  TableName,  statmnt
       ,Totals2 = '' --<---------------------  
from cteTables
)
select * from cteTots

Answer 1

我认为这是您想要的：

DECLARE @Sql nvarchar(4000);

SELECT @Sql = 'SELECT '+ t.name + ' AS TableName, '+ c.name +' AS ColumnName, 
               (SELECT COUNT(*) FROM '+ t.name +' WHERE '+ c.name +' = 0) As Total
               FROM '+ t.name 
FROM        sys.columns c
JOIN        sys.tables  t   ON c.object_id = t.object_id
WHERE       c.name = 'SQ'

EXEC(@SQL)

如何使用在另一列中动态创建的SQL语句的结果填充列

1 个答案: