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Deleting duplicate data after comparing it with other table.

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hi,

how can i delete data from one table which is similar to another data in another table having same coloumn name.


suppose i have one table name test1 and another table named test2 .

test1 has columns let take one,two,three and test2 has same column as well.

Then i am able to compare the data which is similar to both tables in particular column.The thing i want to do is ::

"i want to delete the data which i found similar from one of the table"

How can i do this?

please reply.......... ....
Sep 20 '07 #1
1 3418
amitpatel66
2,367 Recognized Expert Top Contributor
hi,

how can i delete data from one table which is similar to another data in another table having same coloumn name.


suppose i have one table name test1 and another table named test2 .

test1 has columns let take one,two,three and test2 has same column as well.

Then i am able to compare the data which is similar to both tables in particular column.The thing i want to do is ::

"i want to delete the data which i found similar from one of the table"

How can i do this?

please reply.......... ....
Hi,

Try below Query
Expand|Select|Wrap|Line Numbers
  1. DELETE FROM test1 WHERE column1 IN (SELECT column1 FROM test2)
  2.  
Sep 21 '07 #2

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