存储过程中执行带输出参数的动态SQL

--存储过程中执行带输出参数的动态SQL

declare @sql nvarchar(max)
declare @tableName varchar(200)
declare @id int

set @tableName='tableA'

set @sql = 'select @id=id from ' + @tableName

exec sp_executesql @sql, N'@id int output', @id output

select @id