help with query

I need to do a join on two fields but only part of the data in the fields.
the field is 18 digits long but I need the join to be dependent on only the first ten digits.

example.
2 account id's below

000000000055555555
000000000066666666

I need them to match by the first ten digits so the two above referenced accounts would result in a match
jamesmetcalf74Asked:
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Scott PletcherSenior DBACommented:
ON LEFT(col1, 10) = LEFT(col2, 10)

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Kanti PrasadCommented:
Hi

SELECT  * FROM tablename1 tn1 INNER JOIN tablename2 tn2 ON (substring(tn2.yourcolname, 1,10) = substring(tn1.yourcolname, 1,10))
ste5anSenior DeveloperCommented:
Review your model. Looks like a violation of 1NF.
jamesmetcalf74Author Commented:
Worked like a charm Scott.
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