[sql-server] Do while loop in SQL Server 2008

I am not sure about DO-WHILE IN MS SQL Server 2008 but you can change your WHILE loop logic, so as to USE like DO-WHILE loop.

Examples are taken from here: http://blog.sqlauthority.com/2007/10/24/sql-server-simple-example-of-while-loop-with-continue-and-break-keywords/

  1. Example of WHILE Loop

    DECLARE @intFlag INT
    SET @intFlag = 1
    WHILE (@intFlag <=5)
    BEGIN
        PRINT @intFlag
        SET @intFlag = @intFlag + 1
    END
    GO
    

    ResultSet:

    1
    2
    3
    4
    5
    
  2. Example of WHILE Loop with BREAK keyword

    DECLARE @intFlag INT
    SET @intFlag = 1
    WHILE (@intFlag <=5)
    BEGIN
        PRINT @intFlag
        SET @intFlag = @intFlag + 1
        IF @intFlag = 4
            BREAK;
    END
    GO
    

    ResultSet:

    1
    2
    3
    
  3. Example of WHILE Loop with CONTINUE and BREAK keywords

    DECLARE @intFlag INT
    SET @intFlag = 1
    WHILE (@intFlag <=5)
    BEGIN
        PRINT @intFlag
        SET @intFlag = @intFlag + 1
        CONTINUE;
        IF @intFlag = 4 -- This will never executed
            BREAK;
    END
    GO
    

    ResultSet:

    1
    2
    3
    4
    5
    

But try to avoid loops at database level. Reference.

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