I\'ve got a Postgres 9.0 database which frequently I took data dumps of it. This database has a lot of indexes and everytime I restore a dump postgres starts background task vacuum cleaner (is that r
In pgAdmin, whenever a table\'s statistics are out-of-date, it prompts: Running VACUUM recommended The estimated rowcount on the table schema.table deviates
I use PostgreSQL on an embedded system with limited drive space. Now the DB-drive is full. When I delete data, it doesn\'t seem to free up any space. I tried to VACUUM FULL, but that requires space. S
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I have a 9.0.1 database with two corrupted tables (one table has 20 rows, the other 140).The tables seem fine for read/select operations, but updating certain rows in the table produce error messages:
I have a very simple update statement: UPDATE W SET state=\'thing\' WHERE state NOT IN (\'this\',\'that\') AND losttime < CURRENT_TIMESTAMP;
Well, the question pretty much summarises it. My db activ开发者_如何转开发ity is very update intensive, and I want to programmatically issue a Vacuum Analyze. However I get an error that says that the
Since Postgres can only add columns at the end of tables, I end up re-ordering by adding new columns at the end of the table, setting them equal to existing columns, and then dropping the original col
As referenced by this Firefox bug, what does the act of vacuuming a database accomplish?Is t开发者_StackOverflow社区his operation supported by all modern database software, or only certain ones?Databa
前言 通常，在PostgreSQL中，由于经常需要对表进行 UPDATE 和 DELETE，因此表会产生碎片空间。
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