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ÐèÇó£»Á¬Ðø3¸öÔÂδÉ걨(GL_WSBXX±í,SBBZÉ걨±êÖ¾£¬YΪÒÑÉ걨£¬NΪδÉ걨)¡£É걨ʱ¼äµÄÁÐÊÇSBRQ
¼´Òª²éѯGL_WSBXX±íÖÐSBRQÁ¬Ðø3¸öÔÂSBBZΪNµÄÐÅÏ¢¡£
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ÌùÊý¾Ý²»¿ÉÄܵĺǺǣ¬SBRQÊÇdateÀàÐÍ

SQL code:
--½¨±í(ÆäÖÐidΪµ¥Î»ID)
create table GL_WSBXX(id number,sbrq date,sbbz varchar2(10));

--²åÈë¼Ç¼
insert into gl_wsbxx (ID, SBRQ, SBBZ)
values (1, to_date('01-01-2009', 'dd-mm-yyyy'), 'N');

insert into gl_wsbxx (ID, SBRQ, SBBZ)
values (1, to_date('01-02-2009', 'dd-mm-yyyy'), 'N');

insert into gl_wsbxx (ID, SBRQ, SBBZ)
values (1, to_date('01-03-2009', 'dd-mm-yyyy'), 'N');

insert into gl_wsbxx (ID, SBRQ, SBBZ)
values (2, to_date('01-01-2009', 'dd-mm-yyyy'), 'N');

insert into gl_wsbxx (ID, SBRQ, SBBZ)
values (2, to_date('01-02-2009', 'dd-mm-yyyy'), 'Y');

insert into gl_wsbxx (ID, SBRQ, SBBZ)
values (2, to_date('01-03-2009', 'dd-mm-yyyy'), 'N');

insert into gl_wsbxx (ID, SBRQ, SBBZ)
values (2, to_date('01-04-2009', 'dd-mm-yyyy'), 'N');

--È¡µÃÁ¬ÐøÈý¸öÔµ¥Î»id
SELECT A.ID
from (SELECT * from GL_WSBXX) a,
(SELECT id, SBRQ, SBBZ, last_day(trunc(add_months(SBRQ, 2))) SBRQ1 from GL_WSBXX) b
WHERE a.id = b.id AND
a.SBRQ >= b.SBRQ AND
a.SBRQ <= b.SBRQ1
an


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