sql code
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if object_id('[tb]') is not null drop table [tb]
go
create table [tb]([col1] bigint,[col2] varchar(6),[col3] varchar(6))
insert [tb]
select 130126200201000275,'ÍõÎÄϼ','½ù´¨´¨' union all
select 130126200201000275,'ÍõÎÄϼ','½ù澤' union all
select 130126200201000275,'ÍõÎÄϼ','aaaa' union all
select 130126200201000276,'ÖÜ書¶ð','³Ì˼³¬' union all
select 130126200201000276,'ÖÜ書¶ð','³Ìٮٮ' union all
select 130126200201000277,'風¾Õ','³ÌÇàÇà' union all
select 130126200201000277,'風¾Õ','³Ì¶þС' union all
select 130126200201000278,'張Ó¢ÌÒ','³Ì´ó慶' union all
select 130126200201000278,'張Ó¢ÌÒ','³ÌС»¨'
--------------¿ªÊ¼²éѯ--------------------------
select * from tb
select col2,col3 from
(
select col1,col2,col3 from [tb] t
where not exists(select * from tb where col1=t.col1 and col2=t.col2 and col3>t.col3)
union all
select col1,'',col3 from [tb] t
where exists(select 1 from tb where col1=t.col1 and col2=t.col2 and col3>t.col3)
)T
order by col1,col3 desc
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final static String querySql = "select {enterprise.*}, {dict.*} ,{balancd.*}, {weightinfo.*} "
+ "from weight_info weightinfo left outer join t_dict dict on {weightinf ......
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DROP TABLE t_change_lc;
CREATE TABLE t_change_lc (card_code VARCHAR2(3), q NUMBER, bal NUMBER);
INSERT INTO t_change_lc
SELECT '001' card_code, ROWNUM q, trunc(dbms_random.VALUE * 100) bal from dual CONNECT BY ROWNUM <= 4
UNION
SELECT '002' card_code, ROWNUM q, trunc(d ......