How does Delete Query work ??

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От sri harsha
Тема How does Delete Query work ??
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Msg-id CAP6OGLHF+qrffG9s4bhn99RLmupK6SefMJ38WE-2O5=Spq4E4Q@mail.gmail.com
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Ответы Re: How does Delete Query work ??
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Hi,


   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

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