No way you can make sure at application level. Think in sense of an uncommitted row and other session inserting at the same moment in time. Thanks, Atul Goel -----Original Message----- From: Gnanakumar [mailto:gnanam@xxxxxxxxxx] Sent: 18 January 2012 12:59 To: Atul Goel; pgsql-general@xxxxxxxxxxxxxx Subject: RE: On duplicate ignore > Just create a unique index on EMAIL column and handle error if it > comes Thanks for your suggestion. Of course, I do understand that this could be enforced/imposed at the database-level at any time. But I'm trying to find out whether this could be solved at the application layer itself. Any thoughts/ideas? The information contained in this email is strictly confidential and for the use of the addressee only, unless otherwise indicated. If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone (+44 (0)20 7896 0011) and then delete the email and any copies of it. Opinions, conclusions (etc) that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. IG Group Holdings plc is a company registered in England and Wales under number 04677092. VAT registration number 761 2978 07. Registered Office: Cannon Bridge House, 25 Dowgate Hill, London EC4R 2YA. Listed on the London Stock Exchange. Its subsidiaries IG Markets Limited and IG Index Limited are authorised and regulated by the Financial Services Authority (IG Markets Limited FSA registration number 195355 and IG Index Limited FSA registration number 114059). -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
