sql create a variable in select
-- Create the table. CREATE TABLE TestTable (cola int, colb char(3)); GO SET NOCOUNT ON; GO -- Declare the variable to be used. DECLARE @MyCounter int; -- Initialize the variable. SET @MyCounter = 0; -- Test the variable to see if the loop is finished. WHILE (@MyCounter < 26) BEGIN; -- Insert a row into the table. INSERT INTO TestTable VALUES -- Use the variable to provide the integer value -- for cola. Also use it to generate a unique letter -- for each row. Use the ASCII function to get the -- integer value of 'a'. Add @MyCounter. Use CHAR to -- convert the sum back to the character @MyCounter -- characters after 'a'. (@MyCounter, CHAR( ( @MyCounter + ASCII('a') ) ) ); -- Increment the variable to count this iteration -- of the loop. SET @MyCounter = @MyCounter + 1; END; GO SET NOCOUNT OFF; GO -- View the data. SELECT cola, colb FROM TestTable; GO DROP TABLE TestTable; GO
