For cases like this I created a DB2 UDF that some other RDBMS's have. It is
a scalar function called isNumeric.
SET PATH "QSYS","QSYS2" ;
CREATE FUNCTION isNumeric (
pFIELD VARCHAR(256) )
RETURNS INTEGER
LANGUAGE SQL
SPECIFIC isNumeric
DETERMINISTIC
READS SQL DATA
CALLED ON NULL INPUT
NO EXTERNAL ACTION
-- NOT FENCED
SET OPTION ALWBLK = *ALLREAD ,
ALWCPYDTA = *OPTIMIZE ,
COMMIT = *NONE ,
DECRESULT = (31, 31, 00) ,
DFTRDBCOL = *NONE ,
DYNDFTCOL = *NO ,
DYNUSRPRF = *USER ,
SRTSEQ = *HEX
BEGIN
DECLARE TestTrue INTEGER DEFAULT 0 ;
IF LENGTH(TRIM(TRANSLATE(TRANSLATE(TRIM(pFIELD)
,'X',' '), ' ', '0123456789'))) = 0
THEN SET TESTTRUE = 1;
ELSE SET TESTTRUE = 0;
END IF;
RETURN TESTTRUE ;
END ;
COMMENT ON SPECIFIC FUNCTION isNumeric
IS 'isNumeric(TestField)' ;
"Zachary Johnson" <ZJohnson@xxxxxxxxxxxxx> wrote in message
news:mailman.31658.1299012233.2702.rpg400-l@xxxxxxxxxxxx...
Given a pointer and size, is there a way to find out if the data at that
address is valid numeric data? Could be packed or zoned and I suppose
integer also.
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