Re: Converting Integer to Dates

Brian,

Since you have dates like this throughout your database I strongly suggest
you create a UDF so that you do not have to bury this logic into each
query.

Someone else can pretty up the error handling of this. By prettying up I
mean convert the error into some default value, like null.

STRSQL
CREATE FUNCTION ROB/INTTODATE
(INTDATE INT)
RETURNS DATE
LANGUAGE SQL
RETURNS NULL ON NULL INPUT
BEGIN
DECLARE CHARDATE CHAR(8);
DECLARE RETURNDATE DATE;
SET CHARDATE = CAST(INTDATE AS CHAR(8));
SET RETURNDATE = DATE(SUBSTR(CHARDATE, 1, 4) CONCAT '-' CONCAT
SUBSTR(CHARDATE, 5, 2) CONCAT '-' CONCAT
SUBSTR(CHARDATE, 7, 2));
RETURN RETURNDATE;
END
Function INTTODATE was created in ROB.

SELECT INTTODATE(CAST (20071001 AS INT)) from sysibm/sysdummy1

....+....1
INTTODATE
2007-10-01
******** End of data ********
SELECT statement run complete.

SELECT INTTODATE(CAST (20071032 AS INT)) from sysibm/sysdummy1

Query cannot be run. See lower level messages.


Rob Berendt