sql - Why am I getting duplicate records for this query? I am performing a Left Outer Join -

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i entering following query below , getting duplicate values. thought if did left outer join wouldn't that. want t0. data 2 of 3 columns. 1 column want t1. data related customer name customer code. seems want populate record twice.

here code attempting use:

select  t0.cardcode         ,t1.cardname         ,t0.state  crd1 t0 left outer join ocrd t1 on t0.cardcode=t1.cardcode

try using distinct keyword.

select distinct       t0.cardcode     ,t1.cardname     ,t0.state  crd1 t0 left outer join ocrd t1 on t0.cardcode=t1.cardcode

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