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Re: Converting sql anywhere to postgres - Mailing list pgsql-general

From Russell Rose | Passfield Data Systems
Subject Re: Converting sql anywhere to postgres
Date
Msg-id VI1P191MB0638DF6A32205FA51983F92AF215A@VI1P191MB0638.EURP191.PROD.OUTLOOK.COM
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In response to Converting sql anywhere to postgres  (Russell Rose | Passfield Data Systems <russellrose@passfield.co.uk>)
Responses Re: Converting sql anywhere to postgres  (Guyren Howe <guyren@gmail.com>)
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I have just had a quick look at rules and I am not sure how it can be done. Rules still use the concept of NEW and OLD.
Ifmy original row has 'myfield' set to 'me' then I don't think I can tell the difference between: 

Update mytable set afield='something'
and
Update mytable set afield='something',myfield='me'

Within the rule I think NEW.myfield will be set to 'me' in both cases. Please can you explain how I can tell the
differencebetween the two update statements

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