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Tom Lane wrote:
| Gaetano Mendola [EMAIL PROTECTED] writes:
|
|my warning was due the fact that in the docs is written nowhere this
|drawback.
|
|
| The SELECT reference page already says that the output rows are computed
| before applying ORDER BY or
Gaetano Mendola [EMAIL PROTECTED] writes:
now what do I see is that for each different x value
the foo is executed more than once, I guess this is because
the distinct filter out the rows after executing the query.
Is this behaviour the normal one? Shall be not documented ?
Usually
Greg Stark wrote:
Gaetano Mendola [EMAIL PROTECTED] writes:
now what do I see is that for each different x value
the foo is executed more than once, I guess this is because
the distinct filter out the rows after executing the query.
Is this behaviour the normal one? Shall be not documented ?
Gaetano Mendola [EMAIL PROTECTED] writes:
my warning was due the fact that in the docs is written nowhere this
drawback.
The SELECT reference page already says that the output rows are computed
before applying ORDER BY or DISTINCT.
regards, tom lane
