How does Delete Query work ?? - Mailing list pgsql-general

   I want to know about the flow in which delete query is executed in postgres .

Assume i have a following query.

Delete from table_a * where column_a = 'something' 

How is this query executed ? Are the rows first filtered out and then deleted one by one ?? Or is the row deleted as and when it is filtered ??

Thanks,

Harsha