Thanks Team for showing interest. Please find the attached patch, which uses the same approach as mentioned in previous email to implement input functions to parse pg_distinct, pg_dependency and pg_mcv_list strings.
Regards, Hari From: Bruce Momjian <br...@momjian.us> Date: Saturday, 7 January 2023 at 8:10 AM To: Hari krishna Maddileti <hmaddil...@vmware.com> Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org> Subject: Re: Support for dumping extended statistics !! External Email On Thu, Jan 5, 2023 at 06:29:03PM +0000, Hari krishna Maddileti wrote: > Hi Team, > In order to restore dumped extended statistics (stxdndistinct, > stxddependencies, stxdmcv) we need to provide input functions to parse > pg_distinct/pg_dependency/pg_mcv_list strings. > > Today we get the ERROR "cannot accept a value of type pg_ndistinct/ > pg_dependencies/pg_mcv_list" when we try to do an insert of any type. > > Approch tried: > > - Using yacc grammar file (statistics_gram.y) to parse the input string to its > internal format for the types pg_distinct and pg_dependencies > > - We are just calling byteain() for serialized input text of type pg_mcv_list. > > Currently the changes are working locally, I would like to push the commit > changes to upstream if there any usecase for postgres. Would like to know if > there any interest from postgres side. There is certainly interest in allowing the optimizer statistics to be dumped and reloaded. This could be used by pg_restore and pg_upgrade. -- Bruce Momjian <br...@momjian.us> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmomjian.us%2F&data=05%7C01%7Chmaddileti%40vmware.com%7C3eec45fa323646114b1b08daf0587937%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C0%7C0%7C638086560027653219%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=NGidyq8AYdqqAAjirIud%2FE2SD%2Bw4MWmdyFwIu2Bos4A%3D&reserved=0 EDB https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fenterprisedb.com%2F&data=05%7C01%7Chmaddileti%40vmware.com%7C3eec45fa323646114b1b08daf0587937%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C0%7C0%7C638086560027653219%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=XUv87gO4KT3W%2FJh17szMBUryZF5kB2hhkY8DD8HeAjE%3D&reserved=0 Embrace your flaws. They make you human, rather than perfect, which you will never be. !! External Email: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender.
v13-0001-Implement-input-functions-for-extended-statistic.patch
Description: v13-0001-Implement-input-functions-for-extended-statistic.patch