I can make group by when it is onlyTBRACCD table, when I add the SPRIDEN it doesn't accept for this code?
SELECT -- tbraccd_pidm,
spriden_pidm,
spriden_first_name
CASE
WHEN SUM (NVL (tbraccd_bae, 0)) < 50
THEN
'Y'
ELSE
'N'
END paid
FROM tbraccd, spriden
WHERE tbraccd_term_code = '201950'
and SPRIDEN_PIDM=tbraccd_pidm
GROUP BY tbraccd_pidm, tbraccd_term_code;