Re: database design with temporary tables

2021-08-29 Thread Mladen Gogala
On 8/29/21 2:26 PM, Adrian Klaver wrote: The pool is maintained, the individual connections(sessions) come and go. Otherwise there would be no point to having a pool. Every time the connection(session) is closed the temporary table disappears. Yes, you're right. And that is very convenient.

Re: database design with temporary tables

2021-08-29 Thread Adrian Klaver
On 8/29/21 10:41 AM, Mladen Gogala wrote: On 8/29/21 12:24 PM, Adrian Klaver wrote: Presumably not. Temporary tables only live at most for the length of a session. It would be a really bad idea to hold sessions open for 24 hours. That is assuming nothing else causes the session to drop and th

Re: database design with temporary tables

2021-08-29 Thread Mladen Gogala
On 8/29/21 12:24 PM, Adrian Klaver wrote: Presumably not. Temporary tables only live at most for the length of a session. It would be a really bad idea to hold sessions open for 24 hours. That is assuming nothing else causes the session to drop and the data to be lost. Well, that's precise

Re: database design with temporary tables

2021-08-29 Thread ourdiaspora
On Sunday, August 29th, 2021 at 5:56 PM, Ray O'Donnell wrote: > - or do they connect only to the web server, which then > > uses its own account on the database server? Thank you; was not aware of this consideration and this option seems most appropriate for the simple sql commands envisaged.

Re: database design with temporary tables

2021-08-29 Thread Ray O'Donnell
On 29/08/2021 17:53, Adrian Klaver wrote: On 8/29/21 9:38 AM, ourdiaspora wrote: ‐‐‐ Original Message ‐‐‐ On Sunday, August 29th, 2021 at 5:30 PM, Adrian Klaver wrote: On 8/29/21 9:24 AM, Adrian Klaver wrote: Whoops, unfinished thought. What I was going to ask is: The above is

Re: database design with temporary tables

2021-08-29 Thread Adrian Klaver
On 8/29/21 9:38 AM, ourdiaspora wrote: ‐‐‐ Original Message ‐‐‐ On Sunday, August 29th, 2021 at 5:30 PM, Adrian Klaver wrote: On 8/29/21 9:24 AM, Adrian Klaver wrote: Whoops, unfinished thought. What I was going to ask is: The above is not clear to me. Are you asking about the Po

Re: database design with temporary tables

2021-08-29 Thread Adrian Klaver
On 8/29/21 9:36 AM, ourdiaspora wrote: ‐‐‐ Original Message ‐‐‐ On Sunday, August 29th, 2021 at 5:24 PM, Adrian Klaver wrote: Presumably not. Temporary tables only live at most for the length of a session. It would be a really bad idea to hold sessions open for 24 hours. Is ther

Re: database design with temporary tables

2021-08-29 Thread ourdiaspora
‐‐‐ Original Message ‐‐‐ On Sunday, August 29th, 2021 at 5:38 PM, Ray O'Donnell wrote: > > I'd save a timestamp with the session data, and then run a cron job > > which deletes sessions older than whatever lifetime you want. > Is it prudent in this scenario for the user to create (a)

Re: database design with temporary tables

2021-08-29 Thread David G. Johnston
On Sunday, August 29, 2021, Ray O'Donnell wrote: > >>> >> Is there an alternative scenario, such as the user is able to create >> a new table with saves the session data for a maximum time (such as >> 24 hours), even up to a certain time if the web browser crashes for >> example? > > In general a

Re: database design with temporary tables

2021-08-29 Thread David G. Johnston
On Sunday, August 29, 2021, ourdiaspora wrote: > > > Yes, wanted to know relevant parts because often the first problem is to > know which part of the (extensive) documentation to read... > > Suggest you just start developing. When you get stuck the nature of the block should inform where to go l

Re: database design with temporary tables

2021-08-29 Thread Ray O'Donnell
On 29/08/2021 17:36, ourdiaspora wrote: ‐‐‐ Original Message ‐‐‐ On Sunday, August 29th, 2021 at 5:24 PM, Adrian Klaver wrote: Presumably not. Temporary tables only live at most for the length of a session. It would be a really bad idea to hold sessions open for 24 hours. Is ther

Re: database design with temporary tables

2021-08-29 Thread ourdiaspora
‐‐‐ Original Message ‐‐‐ On Sunday, August 29th, 2021 at 5:30 PM, Adrian Klaver wrote: > On 8/29/21 9:24 AM, Adrian Klaver wrote: > > > Whoops, unfinished thought. What I was going to ask is: > > The above is not clear to me. Are you asking about the Postgres > > documentation? > Yes

Re: database design with temporary tables

2021-08-29 Thread ourdiaspora
‐‐‐ Original Message ‐‐‐ On Sunday, August 29th, 2021 at 5:24 PM, Adrian Klaver wrote: > > Presumably not. Temporary tables only live at most for the length of a > > session. It would be a really bad idea to hold sessions open for 24 > > hours. Is there an alternative scenario, such as

Re: database design with temporary tables

2021-08-29 Thread Adrian Klaver
On 8/29/21 9:24 AM, Adrian Klaver wrote: On 8/29/21 9:10 AM, ourdiaspora wrote: Readers, User selects data (read-only) from extant tables; Web server combines user data with read-only data to produce content visible to user as html and/or pdf document; User does not need to sign in to use w

Re: database design with temporary tables

2021-08-29 Thread Adrian Klaver
On 8/29/21 9:10 AM, ourdiaspora wrote: Readers, Some advice would be appreciated about appropriate tables to store temporary data. Scenario: User copies csv file of user data, presumably into some temporary table(s); Presumably not. Temporary tables only live at most for the length of a ses

database design with temporary tables

2021-08-29 Thread ourdiaspora
Readers, Some advice would be appreciated about appropriate tables to store temporary data. Scenario: User copies csv file of user data, presumably into some temporary table(s); User selects data (read-only) from extant tables; Web server combines user data with read-only data to produce content