Question

我不想根据条件/参数显示列我想要的是

if(@SelectFlag==true)
    select name,Address,salary,CreatedBy from employee
else (@UpdateFlag==true)
    select name,Address,salary from employee    
    -- in this case i don't require the column "CreatedBy"

如何查看上述情况的查询或存储过程..

谢谢＆amp;问候..

Answer 1

这是创建存储过程的示例，也许您只需要一个参数来指示您要执行的操作

CREATE PROCEDURE procedurenameHere(@EventFlag INTEGER)
AS
    -- @EventFlag
    -- 1 for SELECT
    -- 2 for UPDATE
    IF @EventFlag = 1
        SELECT  name,Address,salary,CreatedBy 
        FROM    employee
    ELSE IF @EventFlag = 2
        SELECT  name,Address,salary, NULL AS CreatedBy 
        FROM    employee
GO

执行：

EXEC procedurenameHere 1

Answer 2

使用单=和1代替true。

if @SelectFlag = 1
  select name, Address, salary, CreatedBy from employee
else
if @UpdateFlag = 1
  select name, Address, salary from employee

Answer 3

试试这个

表：emp
专栏：姓名，地址，工资，贷记后

declare My_Block
    p_select_flag emp.SelectFlag%type;
    p_updateFlag  emp.UpdateFlag%type;
BEGIN
    select selectFlag into p_select_flag from emp where name='ASIF';
    select update into p_updateFlag from emp where name='ASIF';

IF p_select_flag = 'TRUE' THEN
    select name,Address,salary,CreatedBy from employee;
ELSIF UpdateFlag = 'TRUE' then
    select name,Address,salary from employee;
END IF;

END My_Block

Answer 4

U可以使用参数在SP内部调用，并将一个参数作为FLAG传递给整数：

使用single =和1,2而不是true。

1表示选择，2表示更新

if @FLAG = 1
  select name, Address, salary, CreatedBy from employee
else
if @FLAG = 2
  select name, Address, salary from employee

根据案例或If语句选择列

4 个答案: