insert this line does not exist

Hi all

I need to insert a line using the daily procedure. Insert must only be performed when this line does not exist in the table. Please suggest me a decision. I know it's simple question, sorry for disturbing (Burns my brain).

Hello

Use MERGE.
http://download.Oracle.com/docs/CD/B28359_01/server.111/b28286/statements_9016.htm#sthref9082
If you use Oracle 10 (or higher) then you don't need a section "WHEN MATCHED.

If you want to know, post a small example of data (CREATE TABLE and INSERT statements, showing all the tables involved, as they exist prior to the INSERTs in question). Put one or two unconditional instructions INSERT (including an example of each matching rows found and not found) and the results you want (that is, the content of the table changed after the INSERTs).
Always tell what version of Oracle you are using.

Tags: Database

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