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select all records from table1 and Insert into table2 where not exists in table2

Posted on 2004-08-20
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Last Modified: 2008-03-17
Hi,

I have two tables......... (please see below)

Both tables have a unique index on the "trec_code" and "matter_no" fields.

What I want to do is select all the records from "Table1" that do not exist in "Table2", and then insert those records into "Table2".

How do I achieve this???

Thanks,
Steve.

-------------------------------

Table1:
trec_code matter_no  
--------- -----------
das       10000
das       20000
hpm       10000
hpm       20000
mjw       10000
mjw       20000
wdg       10000
wdg       20000

Table2:
trec_code matter_no  
--------- -----------
das       20000
wdg       10000

-------------------------------
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Question by:ive5005s
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2 Comments
 
LVL 2

Accepted Solution

by:
nexusSam earned 100 total points
ID: 11850622
Try:

INSERT Table2
SELECT * FROM Table1 t1
WHERE NOT EXISTS
   (SELECT 1 FROM Table2 t2 WHERE t1.trec_code=t2.trec_code
    AND t1.matter_no=t2.matter_no)
0
 

Author Comment

by:ive5005s
ID: 11850697
Cheers.
0

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