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jcb267
Constraint Violating Yak Guru

291 Posts

Posted - 2011-02-15 : 09:07:11
I keep getting join types confused......

I have two tables (1) claimline and (2) claimheader. Claimline has claim line level detail to my claims and could have multiple records that match claimheader.

Can anyone please help me to understand why when I do an inner join (ClaimLine CL inner join ClaimHeader CH) or a left join (ClaimLine CL leftjoin ClaimHeader CH) I get the same record count?

Thanks

pk_bohra
Master Smack Fu Yak Hacker

1182 Posts

Posted - 2011-02-15 : 09:37:15
May be because you have 1 or more rows in both the tables so all the matching records are appearing.

To see the difference, keep record only in one table and no matching records in other table.
Ex: Insert a record in ClaimHeader only
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mikgri
Starting Member

39 Posts

Posted - 2011-02-15 : 10:34:35
Google "joins in sql server"
this link http://www.mssqltips.com/tip.asp?tip=1667
explanes joins and has examples.
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