| *** Dejan has joined #ingres | 00:52 | |
| Dejan | hello :) | 00:52 |
|---|---|---|
| *** PaulM05 has joined #ingres | 01:12 | |
| PaulM05 | morning all | 01:12 |
| *** stliu has joined #ingres | 02:22 | |
| Dejan | hey Paul | 04:09 |
| Dejan | :) | 04:09 |
| PaulM05 | hi | 04:09 |
| *** PaulM05 is now known as PaulM05_lunch | 04:54 | |
| *** stliu has quit IRC | 04:55 | |
| *** PaulM05_lunch is now known as PaulM05 | 05:37 | |
| Dejan | wb | 05:43 |
| Dejan | :) | 05:43 |
| Dejan | PaulM05, is there any document about how the data are stored for a particular storage type? | 05:43 |
| Dejan | lets say HASH | 05:44 |
| PaulM05 | the internal structure? | 05:45 |
| Dejan | that too, but i am just wondering how data are stored/retrieved | 05:45 |
| Dejan | say we use 8k pages | 05:46 |
| Dejan | do we assume the actual file is 8x * X where X = number of total pages, etc | 05:47 |
| Dejan | what is the hash algorithm used in the case of HASH tables, etc | 05:47 |
| PaulM05 | you'd need to look in the code for the algorithm, but it's the same one the HASH() function uses | 05:47 |
| PaulM05 | I know that you can't necessarily say it's 8X because it depends on overflow and how many keys hit the same page | 05:48 |
| Dejan | s/8x/8k/ | 05:49 |
| Dejan | and X includes overflow pages | 05:49 |
| PaulM05 | OK so in that case you have a few extra pages for space management so ~8k*X would be right - unless you have defined a large extend value - that's the amount it increases the file by when it needs to add new pages | 05:51 |
| PaulM05 | have you used "MODIFY ... TO TABLE_DEBUG" before? | 05:52 |
| Dejan | yep :) | 06:01 |
| Dejan | i just love that feature of Ingres | 06:01 |
| Vroomfon1le | what's that do? | 06:02 |
| PaulM05 | it shows you the layout of the data file in page types | 06:05 |
| *** Alex| has joined #ingres | 09:02 | |
| *** ChanServ sets mode: +o Alex| | 09:02 | |
| *** PaulM05 has quit IRC | 09:30 | |
| *** Alex| has quit IRC | 12:05 | |
| *** rczak has quit IRC | 12:35 | |
| *** rczak has joined #ingres | 12:41 | |
| *** DerMeister has joined #ingres | 13:38 | |
| *** Mud has quit IRC | 13:50 | |
| *** rczak has quit IRC | 13:55 | |
| *** DerMeister has quit IRC | 14:10 | |
| *** stliu has joined #ingres | 20:16 | |
| *** cytrinox_ has joined #ingres | 21:20 | |
| *** cytrinox has quit IRC | 21:23 | |
| *** cytrinox_ is now known as cytrinox | 21:23 | |
| *** Alex| has joined #ingres | 22:37 | |
| *** ChanServ sets mode: +o Alex| | 22:37 | |
| *** Alex| has quit IRC | 23:09 | |
| *** Alex| has joined #ingres | 23:33 | |
| *** ChanServ sets mode: +o Alex| | 23:33 | |
Generated by irclog2html.py 2.7 by Marius Gedminas - find it at mg.pov.lt!