postgresql: Fast way to update the latest inserted row

Posted by Anonymous on Stack Overflow See other posts from Stack Overflow or by Anonymous
Published on 2013-11-11T09:49:43Z Indexed on 2013/11/11 9:53 UTC
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sql

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postgresql

What is the best way to modify the latest added row without using a temporary table. E.g. the table structure is

id | text | date

My current approach would be an insert with the postgresql specific command "returning id" so that I can update the table afterwards with

update myTable set date='2013-11-11' where id = lastRow

However I have the feeling that postgresql is not simply using the last row but is iterating through millions of entries until "id = lastRow" is found. How can i directly access the last added row?

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