Home/ Questions/Q 6814301
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-26T20:40:23+00:00

I need to do something like this, but it always fails with ‘Error converting

  • 0

I need to do something like this, but it always fails with ‘Error converting data type varchar to int’:

DECLARE @intParam INT
DECLARE @ColName VARCHAR(64)

SET @ColName='intcolumn'

SET @intParam = SELECT @ColName FROM myTable

How do I accomplish something like this? I can see the problem is that the SELECT statement simply returns the column name as a string, but I am not sure how to fix that. I am using SQL Server 2008R2.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You need to use dynamic sql:

    • build your dynamic SQL query (take a look at @SQL variable in sample below)
    • use output parameter to get value back from dynamic sql (take a look at @intParam and @intParam_out in sample below)
    • execute dynamic sql using sp_executesql
    DECLARE @intParam INT
DECLARE @ColName VARCHAR(64)

SET @ColName='intcolumn'

DECLARE @SQL NVARCHAR(1000)
SET @SQL = 'SELECT @intParam_out = ' + @ColName + ' FROM myTable'
exec sp_executesql @SQL, N'@intParam_out int OUTPUT', @intParam_out = @intParam OUTPUT
    • 0