很简单地,我现在如果有一个报表,命令类型是Text,配置了几个报表参数,如果是以下这个形式就执行成功:
if(@TimeType=1) begin 查询 end else if (@TimeType = 2) begin 查询 end
但是如果我在这前面加上一系列的判断+赋值,就像这样
if(@Year is not null and @quarter is not null) begin if(@quarter =1) begin set @startDate =convert(datetime, @Year+'-1-1') set @EndDate=convert(datetime, @Year+'-3-31') end else if(@quarter =2) begin set @startDate =convert(datetime, @Year+'-4-1') set @EndDate =convert(datetime, @Year+'-6-30') end else if(@quarter =3) begin set @startDate =convert(datetime, @Year+'-7-1') set @EndDate =convert(datetime, @Year+'-9-30') end else if(@quarter =4) begin set @startDate =convert(datetime, @Year+'-10-1') set @EndDate =convert(datetime, @Year+'-12-31') end else if(@quarter =5) begin set @startDate =convert(datetime, @Year+'-1-1') set @EndDate =convert(datetime, @Year+'-6-30') end else if(@quarter =6) begin set @startDate =convert(datetime, @Year+'-7-1') set @EndDate =convert(datetime, @Year+'-12-31') end else if(@quarter =7) begin set @startDate =convert(datetime, @Year+'-1-1') set @EndDate =convert(datetime, @Year+'-12-31') end end if(@TimeType=1) begin 查询 end else if (@TimeType = 2) begin 查询 end
在预览的时候就会提示
“本地报表处理期间出错。处理报表时出错。XXX,必须声明标量变量@Year,必须声明标量变量@quarterxxxxxxxx”
让人非常想不明白,正常的T-SQL的话,怎么会前面加上几个判断就导致参数不生效呢?
刚才把上面那一大串判断全部改成case when方式写到查询语句里面了,运行没问题了。
但是还是不知道是什么问题报这个错,难道report services在Text的命令方式下,只能写单条的select语句?不能像一个MSSQL里面正常的查询那样去写?
把上面那一大串判断全部改成case when方式写到查询语句里面了就行了!。