今天写了一个hql作查询，结果查询出很多条重复的记录，肯定做了笛卡尔积

我一直很疑惑一个问题就是，怎样判断这个查询语句中是否一定会做笛卡尔积，我也做了表之间的关联，可能关联的不全也不知道怎么回事，怎么避免这种情况呢？我把控制台打印sql复制如下，哪位大牛了解的给小弟解析下，千恩万谢，我已经困惑很久了。

select
tkcbh0_.KCBHID as KCBHID38_,
tkcbh0_.CKDID as CKDID38_,
tkcbh0_.CKRK as CKRK38_,
tkcbh0_.CREATEDBY as CREATEDBY38_,
tkcbh0_.CREATEDTIME as CREATEDT3_38_,
tkcbh0_.CRKSJ as CRKSJ38_,
tkcbh0_.CRKSL as CRKSL38_,
tkcbh0_.CZR as CZR38_,
tkcbh0_.DElETEDBY as DElETEDBY38_,
tkcbh0_.DELETEDFLAG as DELETEDF6_38_,
tkcbh0_.DELETEDTIME as DELETEDT7_38_,
tkcbh0_.MODIFIEDBY as MODIFIEDBY38_,
tkcbh0_.MODIFIEDTIME as MODIFIED8_38_,
tkcbh0_.RKDID as RKDID38_,
tkcbh0_.WZID as WZID38_
from
t_kcbh tkcbh0_,
T_CKD tckd1_,
t_rkd trkd2_
where
(
tkcbh0_.DELETEDFLAG=0
)
and(
(
tckd1_.DJBH like '%6%' escape '/'
and tkcbh0_.CKDID=tckd1_.CKDID
)
OR(
trkd2_.DJBH like '%6%' escape '/'
and tkcbh0_.RKDID=trkd2_.RKDID
)
)
and(
tkcbh0_.WZID='2c9081e83e49e824013e49ec1c620022'
)

from t1,t2,t3..tn这就是笛卡尔积
t1表总记录乘以t2表总记录乘以t3表总记

期待看到有用的回答！