Re: Add support for data change delta tables
On 1/15/24 4:40 AM, Pavel Stehule wrote: PostgreSQL is not a project where somebody says, you will do this, and you will do this, in this and this priority. There are a lot of nice features from standard - SQL standard is big, but a) you have to have funds to pay the developers, b) you have to have developers with free time who want to do free work. Sure, you can write a proposal, but without a) money or b) your hard work is not a big possibility so your proposal will be implemented in the next few years. With the patch the situation is different. Then developers can see, so it is possible to implement, and how much code (and work) needs it. And in this scenario, the big thing that a patch provides is clarity on what you're actually trying to accomplish. Your original ask is frankly as clear as mud to me - I have no clue what the syntax you showed is supposed to be doing. If you were to ask about something concrete in plain English (vs some unspecified SQL syntax) then you'd be much more likely to at least get some kind of response about your idea. It's certainly possible to convince people on -hackers to work on something that you'd like to see done, but the base prerequisite for that is you have to communicate what you're actually looking for. -- Jim Nasby, Data Architect, Austin TX
Re: Add support for data change delta tables
On 1/15/24 02:44, Thomas Kellerer wrote: PavelTurk schrieb am 15.01.2024 um 11:00: Currently PostgreSQL doesn't support data change delta tables. For example, it doesn't support this type of query: SELECT * FROM NEW TABLE ( INSERT INTO phone_book VALUES ( 'Peter Doe', '555-2323' ) ) AS t PostgreSQL has RETURNING that provides only a subset of this functionality. So I suggest to add support for data change delta tables. Because this feature is more powerful and it is included in the SQL Standard. I don't know that syntax, but it seems to me, it's basically this: with t as ( INSERT INTO phone_book VALUES ( 'Peter Doe', '555-2323' ) returning * ) select * from t; There is also transition relations: https://www.postgresql.org/docs/current/sql-createtrigger.html though that involves creating a trigger on a table. -- Adrian Klaver adrian.kla...@aklaver.com
Re: Add support for data change delta tables
PavelTurk schrieb am 15.01.2024 um 11:00: > Currently PostgreSQL doesn't support data change delta tables. For example, > it doesn't support this type of query: > > SELECT * FROM NEW TABLE ( > INSERT INTO phone_book > VALUES ( 'Peter Doe', '555-2323' ) > ) AS t > > PostgreSQL has RETURNING that provides only a subset of this functionality. > > So I suggest to add support for data change delta tables. Because this > feature is more powerful and it is included > in the SQL Standard. I don't know that syntax, but it seems to me, it's basically this: with t as ( INSERT INTO phone_book VALUES ( 'Peter Doe', '555-2323' ) returning * ) select * from t;
Re: Add support for data change delta tables
po 15. 1. 2024 v 11:27 odesílatel PavelTurk napsal: > > On 1/15/24 12:17 PM, Pavel Stehule wrote: > > > > po 15. 1. 2024 v 11:11 odesílatel PavelTurk > napsal: > >> >> On 1/15/24 12:05 PM, Pavel Stehule wrote: >> >> Hi >> >> po 15. 1. 2024 v 11:00 odesílatel PavelTurk >> napsal: >> >>> Hello all, >>> >>> >>> Currently PostgreSQL doesn't support data change delta tables. For example, >>> it doesn't support this type of query: >>> >>> SELECT * FROM NEW TABLE ( >>> INSERT INTO phone_book >>> VALUES ( 'Peter Doe', '555-2323' ) >>> ) AS t >>> >>> >>> PostgreSQL has RETURNING that provides only a subset of this functionality. >>> >>> >>> So I suggest to add support for data change delta tables. Because this >>> feature is more powerful and it is included >>> in the SQL Standard. >>> >> >> This is the wrong mailing list - probably you should send your proposal >> to pgsql-hackers. >> >> >> I sent message to pgsql-hackers >> https://www.postgresql.org/message-id/b85900eb-9e3c-e358-aa8f-5a27b30c17e7%40gmail.com >> but got no answer. I decided that my message was ignored because I used >> wrong mailing list. >> >> The community development is based on patches. If you propose some >> feature, usually you should implement it. Probably nobody will implement >> it instand you. >> >> >> I am Java developer - I wish, but I can't >> > > I am sorry, but you cannot expect, so somebody will accept your proposal > extra seriously. Proposing some feature is a simple thing, but implementing > some not trivial feature requires hundreds of hours of development. > > > To tell the truth I find it rather strange. I know that there is a big > difference between proposing some feature and implementing it. But all > projects I came across with work this way - > you as a user come and propose a feature. The developers of the project > consider your issue and either accept it to implement or decline it. > PostgreSQL is not a project where somebody says, you will do this, and you will do this, in this and this priority. There are a lot of nice features from standard - SQL standard is big, but a) you have to have funds to pay the developers, b) you have to have developers with free time who want to do free work. Sure, you can write a proposal, but without a) money or b) your hard work is not a big possibility so your proposal will be implemented in the next few years. With the patch the situation is different. Then developers can see, so it is possible to implement, and how much code (and work) needs it. > You can check the work on features for Postgres > https://commitfest.postgresql.org/ and I don't think so there is a lot of > free capacity for implementing some new features partially redundant to > already supported features. > > Regards > > Pavel > > > >> Best regards, Pavel >> >> >
Re: Add support for data change delta tables
On 1/15/24 12:17 PM, Pavel Stehule wrote: po 15. 1. 2024 v 11:11 odesílatel PavelTurk mailto:pavelturk2...@gmail.com>> napsal: On 1/15/24 12:05 PM, Pavel Stehule wrote: Hi po 15. 1. 2024 v 11:00 odesílatel PavelTurk mailto:pavelturk2...@gmail.com>> napsal: Hello all, Currently PostgreSQL doesn't support data change delta tables. For example, it doesn't support this type of query: SELECT * FROM NEW TABLE ( INSERT INTO phone_book VALUES ( 'Peter Doe', '555-2323' ) ) AS t PostgreSQL has RETURNING that provides only a subset of this functionality. So I suggest to add support for data change delta tables. Because this feature is more powerful and it is included in the SQL Standard. This is the wrong mailing list - probably you should send your proposal to pgsql-hackers. I sent message to pgsql-hackers https://www.postgresql.org/message-id/b85900eb-9e3c-e358-aa8f-5a27b30c17e7%40gmail.com <https://www.postgresql.org/message-id/b85900eb-9e3c-e358-aa8f-5a27b30c17e7%40gmail.com> but got no answer. I decided that my message was ignored because I used wrong mailing list. The community development is based on patches. If you propose some feature, usually you should implement it. Probably nobody will implement it instand you. I am Java developer - I wish, but I can't I am sorry, but you cannot expect, so somebody will accept your proposal extra seriously. Proposing some feature is a simple thing, but implementing some not trivial feature requires hundreds of hours of development. To tell the truth I find it rather strange. I know that there is a big difference between proposing some feature and implementing it. But all projects I came across with work this way - you as a user come and propose a feature. The developers of the project consider your issue and either accept it to implement or decline it. You can check the work on features for Postgres https://commitfest.postgresql.org/ <https://commitfest.postgresql.org/> and I don't think so there is a lot of free capacity for implementing some new features partially redundant to already supported features. Regards Pavel Best regards, Pavel
Re: Add support for data change delta tables
po 15. 1. 2024 v 11:11 odesílatel PavelTurk napsal: > > On 1/15/24 12:05 PM, Pavel Stehule wrote: > > Hi > > po 15. 1. 2024 v 11:00 odesílatel PavelTurk > napsal: > >> Hello all, >> >> >> Currently PostgreSQL doesn't support data change delta tables. For example, >> it doesn't support this type of query: >> >> SELECT * FROM NEW TABLE ( >> INSERT INTO phone_book >> VALUES ( 'Peter Doe', '555-2323' ) >> ) AS t >> >> >> PostgreSQL has RETURNING that provides only a subset of this functionality. >> >> >> So I suggest to add support for data change delta tables. Because this >> feature is more powerful and it is included >> in the SQL Standard. >> > > This is the wrong mailing list - probably you should send your proposal to > pgsql-hackers. > > > I sent message to pgsql-hackers > https://www.postgresql.org/message-id/b85900eb-9e3c-e358-aa8f-5a27b30c17e7%40gmail.com > but got no answer. I decided that my message was ignored because I used > wrong mailing list. > > The community development is based on patches. If you propose some > feature, usually you should implement it. Probably nobody will implement > it instand you. > > > I am Java developer - I wish, but I can't > I am sorry, but you cannot expect, so somebody will accept your proposal extra seriously. Proposing some feature is a simple thing, but implementing some not trivial feature requires hundreds of hours of development. You can check the work on features for Postgres https://commitfest.postgresql.org/ and I don't think so there is a lot of free capacity for implementing some new features partially redundant to already supported features. Regards Pavel > Best regards, Pavel > >
Re: Add support for data change delta tables
On 1/15/24 12:05 PM, Pavel Stehule wrote: Hi po 15. 1. 2024 v 11:00 odesílatel PavelTurk mailto:pavelturk2...@gmail.com>> napsal: Hello all, Currently PostgreSQL doesn't support data change delta tables. For example, it doesn't support this type of query: SELECT * FROM NEW TABLE ( INSERT INTO phone_book VALUES ( 'Peter Doe', '555-2323' ) ) AS t PostgreSQL has RETURNING that provides only a subset of this functionality. So I suggest to add support for data change delta tables. Because this feature is more powerful and it is included in the SQL Standard. This is the wrong mailing list - probably you should send your proposal to pgsql-hackers. I sent message to pgsql-hackers https://www.postgresql.org/message-id/b85900eb-9e3c-e358-aa8f-5a27b30c17e7%40gmail.com but got no answer. I decided that my message was ignored because I used wrong mailing list. The community development is based on patches. If you propose some feature, usually you should implement it. Probably nobody will implement it instand you. I am Java developer - I wish, but I can't Best regards, Pavel
Re: Add support for data change delta tables
Hi po 15. 1. 2024 v 11:00 odesílatel PavelTurk napsal: > Hello all, > > > Currently PostgreSQL doesn't support data change delta tables. For example, > it doesn't support this type of query: > > SELECT * FROM NEW TABLE ( > INSERT INTO phone_book > VALUES ( 'Peter Doe', '555-2323' ) > ) AS t > > PostgreSQL has RETURNING that provides only a subset of this functionality. > > > So I suggest to add support for data change delta tables. Because this > feature is more powerful and it is included > in the SQL Standard. > This is the wrong mailing list - probably you should send your proposal to pgsql-hackers. https://wiki.postgresql.org/wiki/Developer_FAQ The community development is based on patches. If you propose some feature, usually you should implement it. Probably nobody will implement it instand you. Regards Pavel > > Best regards, Pavel > > >
Add support for data change delta tables
Hello all, Currently PostgreSQL doesn't support data change delta tables. For example, it doesn't support this type of query: SELECT * FROM NEW TABLE ( INSERT INTO phone_book VALUES ( 'Peter Doe', '555-2323' ) ) AS t PostgreSQL has RETURNING that provides only a subset of this functionality. So I suggest to add support for data change delta tables. Because this feature is more powerful and it is included in the SQL Standard. Best regards, Pavel