SELECT TO_CHAR(ADD_MONTHS(ADD_MONTHS(TRUNC(SYSDATE, ‘YYYY‘),A *3),-ROWNUM),‘YYYYMM‘) LAST_Q
FROM (SELECT TO_CHAR(SYSDATE,‘Q‘)-1 A FROM DUAL)
CONNECT BY ROWNUM <=3ORDERBY1;
本季度所有月份：
SELECT TO_CHAR(ADD_MONTHS(ADD_MONTHS(TRUNC(SYSDATE, ‘YYYY‘),A *3),-ROWNUM),‘YYYYMM‘) LAST_Q
FROM (SELECT TO_CHAR(SYSDATE,‘Q‘) A FROM DUAL)
CONNECT BY ROWNUM <=3ORDERBY1;
