Re: [HACKERS] Postgre inner work question

2011-04-13 Thread Adrian von Bidder
On Tuesday 12 April 2011 01.02:35 Lucas Cotta wrote: Does postgre execute the queries following a execution plan tree, where the leafs are table scans, and the nodes are joins? yes, see the EXPLAIN SQL command (EXPLAIN SELECT * FROM ), it will shwo this tree.

[HACKERS] Postgre inner work question

2011-04-11 Thread Lucas Cotta
Hi! Does postgre execute the queries following a execution plan tree, where the leafs are table scans, and the nodes are joins? I'm looking for a database where I can get a cardinality from a partial result of the execution... for example, print the cardinality of the results until the next join

[HACKERS] Postgre inner work question

2011-04-11 Thread Lucas Cotta
Hi! Does postgre execute the queries following a execution plan tree, where the leafs are table scans, and the nodes are joins? I'm looking for a database where I can get a cardinality from a partial result of the execution... for example, print the cardinality of the results until the next join