来自procedure参数的Dynamic Cursor

Question

我有一个带参数的程序。我想基于该参数循环遍历查询。

例如：

参数传递：salary

光标应该是（从emp中选择工资）并循环遍历它。

我该怎么做？

Answer 1

DECLARE @ARGUMENT VARCHAR(50) = 'salary';
DECLARE @CURSOR_BODY VARCHAR(MAX) = '
declare @variable varchar(max)
declare cur cursor for 
select '+ @argument +  ' from emp
OPEN cur;
FETCH NEXT FROM cur INTO @variable
WHILE @@FETCH_STATUS=0
    BEGIN
    select @variable
    FETCH NEXT FROM cur INTO @variable;
    END
CLOSE cur   
DEALLOCATE cur'

print @cursor_body

EXEC (@CURSOR_BODY)

试试吧。像这样