问题描述

我有一个使用动态 sql 的存储过程，它根据传递给它的值更新几列.我正在尝试测试它的多个值，而无需手动输入这些值.这些值将从表格中获取.有没有办法在表中传递所有这些值并让它通过 proc?就像在常规编程语言中一样，您将遍历数组.我在 sql server 2012 中这样做.

I have a stored proc using dynamic sql that updates a few columns based on the value passed to it. I am trying to test it out for multiple values without having to enter those manually. These values are to be taken from a table. Is there a way to pass all these values in the table and have it go through the proc? Just like in your regular programming language where you would run through an array. I am doing this in sql server 2012.

代码是这样的

CREATE PROCEDURE sp1 @enteredvalue int
AS
BEGIN
  UPDATE table1
  SET column1 = 'some var char value',
      column2 = 'some integer values'
  WHERE xid = @enteredvalue
END

我想从具有不同值的表中输入该整数参数 (@enteredvalue) 的值.

I want to enter the values for that integer parameter (@enteredvalue) from a table that has different values.

推荐答案

也许更动态的 SQL 可以解决问题(连同解析器)

Perhaps a little more dynamic SQL will do the trick (along with a parser)

Declare @String varchar(max) = '1,25,659'
Declare @SQL varchar(max) = ''
Select @SQL = @SQL + concat('Exec [dbo].[sp1] ',Key_Value,';',char(13))
 From (Select * from [dbo].[udf-Str-Parse-8K](@String,',')) A

Select @SQL
--Exec(@SQL)

退货

Exec [dbo].[sp1] 1;
Exec [dbo].[sp1] 25;
Exec [dbo].[sp1] 659;

如果需要，UDF(超快！)

The UDF if needed (super fast!)

CREATE FUNCTION [dbo].[udf-Str-Parse-8K](@String varchar(8000), @Delimiter varchar(50))
Returns Table 
As

--Usage: Select * from [dbo].[udf-Str-Parse-8K]('Dog,Cat,House,Car',',')
--       Select * from [dbo].[udf-Str-Parse-8K]('John||Cappelletti||was||here','||')
--       Select * from [dbo].[udf-Str-Parse-8K]('The quick brown fox',' ')

Return (
   with cte1(N)   As (Select 1 From (Values(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) N(N)),
        cte2(N)   As (Select Top (IsNull(DataLength(@String),0)) Row_Number() over (Order By (Select NULL)) From (Select N=1 From cte1 a, cte1 b, cte1 c, cte1 d) A ),
        cte3(N)   As (Select 1 Union All Select t.N+DataLength(@Delimiter) From cte2 t Where Substring(@String,t.N,DataLength(@Delimiter)) = @Delimiter),
        cte4(N,L) As (Select S.N,IsNull(NullIf(CharIndex(@Delimiter,@String,s.N),0)-S.N,8000) From cte3 S)

   Select Key_PS    = Row_Number() over (Order By A.N)
         ,Key_Value = Substring(@String, A.N, A.L) 
         ,Key_Pos   = A.N
   From   cte4 A
)

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