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Message Posted: Fri, 21 Jun 2013 @ 12:35:34 GMT

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Trying following steps. This will be much faster and will maximize the data availability for Table1 as well.

Step 1.

     create table Table1_test as Table1 with no data;

Step 2

     insert into Table1_test
     select * from FROM Table1
       WHERE     (key1, key2) not IN
        (
           SELECT UNIQUE key1, key2 FROM Table2
         );

Step 3

     drop table Table1;

Step 4

     rename table Table1_test to Table1;

Thanks,

Gautam Poddar

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