Question

我尝试创建一个Tenp表（#Articole），但是没有成功。错误在哪里？

Declare @Articol int,
       @Sql NVarchar(max)
set @Articol = 99190
set @Sql=N'
select im.ItemName, im.ItemCode, d.ItemId as PromoId, im.Enabled, im.ItemId, dfv.DiscountFilterValueId
into #Articol
from Discount d (nolock) 
join DiscountFilter df (nolock) on df.DiscountId = d.ItemId
Join DiscountFilterValue dfv (nolock) on dfv.DiscountFilterId = df.DiscountFilterId
join Item i (nolock) on d.ItemId = i.ItemId
Join Item im (nolock) on im.ItemId = dfv.TextValue
where df.EntityId = 184'

IF @Articol <> -1 set @Sql = @Sql + ' and im.ItemId = @Articol'
If @Articol = -1 set @Sql = @Sql
exec sp_executesql @Sql, N'@Articol int', @Articol

select * from #Articole

Answer 1

尝试一下：

    CREATE TABLE #Articole (ItemName NVARCHAR(MAX), ItemCode INT, ItemId INT, Enabled BIT, SecondItemId INT, DiscountFilterValueId INT)
    SET @Sql=N'
    insert into #Articol
    select im.ItemName, im.ItemCode, d.ItemId as PromoId, im.Enabled, im.ItemId, dfv.DiscountFilterValueId      
    from Discount d (nolock) 
    join DiscountFilter df (nolock) on df.DiscountId = d.ItemId
    Join DiscountFilterValue dfv (nolock) on dfv.DiscountFilterId = df.DiscountFilterId
    join Item i (nolock) on d.ItemId = i.ItemId
    Join Item im (nolock) on im.ItemId = dfv.TextValue
    where df.EntityId = 184'

    IF @Articol <> -1 set @Sql = @Sql + ' and im.ItemId = @Articol'
    If @Articol = -1 set @Sql = @Sql
    exec sp_executesql @Sql, N'@Articol int', @Articol

    select * from #Articole

我不知道您的栏类型，我只是猜到了。确保类型正确

Answer 2

编辑，您根本不需要动态SQL。这足以满足您的原始查询：and (@articol = -1 or im.ItemId = @articol)。

临时表仅限于创建它的范围。您要么需要在sp_executesql之前创建它，要么将其余语句移动到动态查询字符串本身中，或者通过以##为前缀而不是单个#作为全局临时表

由于我在实际查询中不了解表的架构，因此以下是预先创建表的技巧。

select top 0 im.ItemName, im.ItemCode, d.ItemId as PromoId, im.Enabled, im.ItemId, dfv.DiscountFilterValueId
into #Articol
from Discount d (nolock) 
join DiscountFilter df (nolock) on df.DiscountId = d.ItemId
Join DiscountFilterValue dfv (nolock) on dfv.DiscountFilterId = df.DiscountFilterId
join Item i (nolock) on d.ItemId = i.ItemId
Join Item im (nolock) on im.ItemId = dfv.TextValue
where df.EntityId = 184

@Sql NVarchar(max)
set @Articol = 99190
set @Sql=N'
insert into #Articol
select im.ItemName, im.ItemCode, d.ItemId as PromoId, im.Enabled, im.ItemId, dfv.DiscountFilterValueId
from Discount d (nolock) 
join DiscountFilter df (nolock) on df.DiscountId = d.ItemId
Join DiscountFilterValue dfv (nolock) on dfv.DiscountFilterId = df.DiscountFilterId
join Item i (nolock) on d.ItemId = i.ItemId
Join Item im (nolock) on im.ItemId = dfv.TextValue
where df.EntityId = 184'

IF @Articol <> -1 set @Sql = @Sql + ' and im.ItemId = @Articol'
If @Articol = -1 set @Sql = @Sql
exec sp_executesql @Sql, N'@Articol int', @Articol

select * from #Articole

Answer 3

我们可以在两个范围内创建临时表，

本地范围-通过用'＃'声明创建，例如#Articole
全局范围-通过用'##'声明，例如##Articole来创建

要么在本地范围之外创建临时表，要么在全局范围内创建它。

为什么无法创建#Articole表

3 个答案: