Question

Does any body know how to set different select statement for the same cursor? I need somethink like this.

DECLARE Temp_Cursor CURSOR FOR
IF(@TempVar = 1)
BEGIN
    SELECT CustomerId FROM Customers
END
ELSE IF(@TempVar = 2)
BEGIN
    SELECT OrderId FROM Orders
END
OPEN Temp_Cursor;
FETCH NEXT FROM TempCursor INTO @TempObjectId
WHILE @@FETCH_STATUS = 0
BEGIN 

…. etc

I have found solution: DECLARE @Temp_Cursor CURSOR
IF(@TempVar = 1)
BEGIN
SET @Temp_Cursor = CURSOR FOR
SELECT CustomerId FROM Customers
END
ELSE IF(@TempVar = 2)
BEGIN
SET @Temp_Cursor = CURSOR FOR
SELECT OrderId FROM Orders
END
OPEN @Temp_Cursor;
FETCH NEXT FROM @TempCursor INTO @TempObjectId
WHILE @@FETCH_STATUS = 0
BEGIN

Answer 1

Put the IF outside and do two different cursors, one for each situation.

Like this:

IF(@TempVar = 1)
BEGIN

    DECLARE Temp_Cursor CURSOR FOR
    SELECT CustomerId FROM Customers


    OPEN Temp_Cursor;
    FETCH NEXT FROM TempCursor INTO @TempObjectId
    WHILE @@FETCH_STATUS = 0
    BEGIN 
    ....
END
ELSE IF(@TempVar = 2)
BEGIN

    DECLARE Temp_Cursor CURSOR FOR
    SELECT OrderId FROM Orders


    OPEN Temp_Cursor;
    FETCH NEXT FROM TempCursor INTO @TempObjectId
    WHILE @@FETCH_STATUS = 0
    BEGIN 
    ....
END

---

Another possibility is to use Dynamic SQL.