How to make a query with dynamic column in sql server 2012 -

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i have sample code below. result such takes these columns varchar type.

declare @col1 varchar(80)='[column1]' declare @col2 varchar(80)='[column2]' select @col1,@col2 mytable

you have use dynamic sql:

declare @col1 varchar(80) = 'column1'; declare @col2 varchar(80) = 'column2';  declare @sql nvarchar(max);  select @sql = 'select ' + quotename(@col1) + ', ' + quotename(@col2) + ' mytable;';  exec sp_executesql @sql;

note have make sure column names real column names. need parameterize query added security. if of these wrong, may create huge security problems.


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