Pavel Stehule pavel.steh...@gmail.com writes:
I seen nice trick based on window function
http://stackoverflow.com/questions/11700930/how-can-i-trim-a-text-array-in-postgresql
but isn't it example of wrong evaluation? Result of row_number is not
correct
Sure it is ... or at least, you won't
On 30 July 2012 17:19, Pavel Stehule pavel.steh...@gmail.com wrote:
Hello
I seen nice trick based on window function
http://stackoverflow.com/questions/11700930/how-can-i-trim-a-text-array-in-postgresql
but isn't it example of wrong evaluation? Result of row_number is not
correct
Looks
On Jul 30, 2012, at 12:33, Thom Brown t...@linux.com wrote:
On 30 July 2012 17:19, Pavel Stehule pavel.steh...@gmail.com wrote:
Hello
I seen nice trick based on window function
http://stackoverflow.com/questions/11700930/how-can-i-trim-a-text-array-in-postgresql
but isn't it example of
2012/7/30 Thom Brown t...@linux.com
On 30 July 2012 17:19, Pavel Stehule pavel.steh...@gmail.com wrote:
Hello
I seen nice trick based on window function
http://stackoverflow.com/questions/11700930/how-can-i-trim-a-text-array-in-postgresql
but isn't it example of wrong evaluation? Result
it looks like row_number is evaluated before SRF - this behave is
absolutely undefined - for me - more native behave is different evaluation.
SRFs which return multiple rows in the SELECT clause have ALWAYS behaved
oddly when it comes to row evaluation (LIMIT, COUNT(), etc.). This
isn't
On Mon, Jul 30, 2012 at 11:47 AM, Pavel Stehule pavel.steh...@gmail.com wrote:
2012/7/30 Thom Brown t...@linux.com
On 30 July 2012 17:19, Pavel Stehule pavel.steh...@gmail.com wrote:
Hello
I seen nice trick based on window function
Josh Berkus j...@agliodbs.com writes:
it looks like row_number is evaluated before SRF - this behave is
absolutely undefined - for me - more native behave is different evaluation.
SRFs which return multiple rows in the SELECT clause have ALWAYS behaved
oddly when it comes to row evaluation
On 07/30/2012 01:18 PM, Tom Lane wrote:
My feeling is that SRFs in targetlists are just fundamentally poorly
defined, and the answer is to avoid them not try to make them cleaner.
Most of the real use-cases for them could be handled in a
better-defined, more standard way with LATERAL ... so
2012/7/30 Tom Lane t...@sss.pgh.pa.us
Josh Berkus j...@agliodbs.com writes:
it looks like row_number is evaluated before SRF - this behave is
absolutely undefined - for me - more native behave is different
evaluation.
SRFs which return multiple rows in the SELECT clause have ALWAYS
