alter procedure [dbo].[ParkingDeatailsReport]
@locid INTEGER, @startdate nvarchar(100),@enddate nvarchar(100)
as
begin
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX)
select @cols = STUFF((SELECT distinct ',' + QUOTENAME(Vtype)
from VType_tbl FOR XML PATH(''),
TYPE).value('.', 'NVARCHAR(MAX)') ,1,1,'')
set @query = 'SELECT Date, ' + @cols + '
from ( select v.Vtype, convert(date, dtime) as Date
from Transaction_tbl t inner join VType_tbl v
on t.vtid = v.vtid
where dtime between @startdate and @enddate
and locid = ' + CAST(@locid as varchar(max))
+ ' ) d pivot ( count(Vtype) for Vtype in (' + @cols + ') ) p '
execute(@query)
end
我试图像这样执行:
exec ParkingDeatailsReport 5,'2013-01-01 00:00:00','2013-06-18 23:59:59'
但是,我收到一个错误:必须声明标量变量“@startdate”。
答案 0 :(得分:1)
问题是你在proc中构建SQL,但你没有使用@startdate和@enddate中的值,而是传递字符串
构建字符串时需要获取这些变量的值 - 例如:
ALTER PROCEDURE [dbo].[ParkingDeatailsReport]
@locid INTEGER,
@startdate nvarchar(100),
@enddate nvarchar(100)
as
BEGIN
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX)
SELECT @cols = STUFF((SELECT distinct ',' + QUOTENAME(Vtype)
from VType_tbl FOR XML PATH(''),
TYPE).value('.', 'NVARCHAR(MAX)') ,1,1,'')
SET @query = 'SELECT Date, ' + @cols + '
FROM (
SELECT
v.Vtype,
convert(date, dtime) as Date
FROM Transaction_tbl t
INNER JOIN VType_tbl v
ON t.vtid = v.vtid
WHERE
dtime between ''' + @startdate + ''' and ''' + @enddate + '''
AND locid = ' + CAST(@locid as varchar(max)) + '
) d
PIVOT ( count(Vtype)
FOR Vtype in (' + @cols + ') ) p '
EXECUTE(@query)
END