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Ö÷±ít1

id    name
1      ÕÅÈý
2      ÀîËÄ

±ís1
idºÅ  tid ±íʾÖ÷±í¶ÔÓ¦µÄidºÅ  value1´û¿î1 value2 Óà¶î´û¿î2
id  tid  value1 value2
1    1    20    10
2    2    10      5

±ís2
idºÅ  tid ±íʾÖ÷±í¶ÔÓ¦µÄidºÅ  value1´æ¿î
id tid  value1
1  1  30
2  2  2

±ís3
idºÅ  tid ±íʾÖ÷±í¶ÔÓ¦µÄidºÅ  value1¹ÉƱ
id  tid value1
1    1    20
2    2    10

==========
Çó2¸ösql

1\ ÇóËùÓдû¿îºÍÓà¶îÖ®²îÔÚ1-30Ö®¼äµÄËùÓпͻ§
2\ Çó¹ÉƱ+´æ¿î-´û¿î1Ö®ºÍÔÚ1-30Ö®¼äËùÓеĿͻ§



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SQL code:
select
a.name
from
t1 a,s1 b,s2 b,s3 c
where
a.id=b.tid
and
a.id=c.tid
and
a.id=d.tid
having
sum(a.value1)-sum(a.value2) between 1 and 30



SQL code:
create table t1(id int, name varchar(10))
insert into t1 values(1 , 'ÕÅÈý')
insert into t1 values(2 , 'ÀîËÄ')
c


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set @sql=''
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