Question

I want to loop a array of chars in a WHILE loop (with only two values : ‘C’ & ‘P’) and use this variable in a SQL statement.

PSEUDO CODE:

WHILE SELECT 'C' UNION SELECT 'P'
BEGIN
    SELECT @Var -- Do real sql-statement here
END

I’ve this working code, but I was wondering if this can be written better / easier / more elegantly ?

DECLARE @Var CHAR(1)
DECLARE @counter INT
SET @counter = 0
WHILE @counter < 2
BEGIN
  SELECT @Var = 
    CASE @counter
        WHEN 0 THEN 'C'
        ELSE 'P'
    END

  SELECT @Var -- Do real sql-statement here
  SET @counter = @counter + 1
END

To clarify, the real sql-statement is something like:

INSERT INTO MyTable
    SELECT A, B, @Var FROM AnotherTable WHERE ExportStatus = 'F'

Answer 1

Simply use:

INSERT INTO MyTable
    SELECT * FROM AnotherTable WHERE ExportStatus 
        IN (SELECT 'C' UNION ALL SELECT 'P')