Thread: where col1 not ilike ('str1%', 'str2%'... 'strN%') support?
Good morning,
Does psql provide something like the following query command?
select * from tablename
where col1 not ilike ('str1%', 'str2%'... 'strN%')
Thanks a lot!
Emi
use a regex ?
On 08/30/2011 16:51, Emi Lu wrote:
> Good morning,
>
> Does psql provide something like the following query command?
>
> select * from tablename
> where col1 not ilike ('str1%', 'str2%'... 'strN%')
>
> Thanks a lot!
> Emi
>
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Emi Lu <emilu@encs.concordia.ca> writes:
> Does psql provide something like the following query command?
> select * from tablename
> where col1 not ilike ('str1%', 'str2%'... 'strN%')
If you remember the operator name equivalent to ILIKE (~~*)
you can do
select * from tablename
where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%']));
regards, tom lane
On 08/30/2011 11:24 AM, Tom Lane wrote:
> Emi Lu<emilu@encs.concordia.ca> writes:
>> Does psql provide something like the following query command?
>
>> select * from tablename
>> where col1 not ilike ('str1%', 'str2%'... 'strN%')
>
> If you remember the operator name equivalent to ILIKE (~~*)
> you can do
>
> select * from tablename
> where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%']));
Thank you Tom!
If next version could have "not ilike ('', '')" added into window
functions, that's will be great!
Emi
Emi Lu <emilu@encs.concordia.ca> writes:
> On 08/30/2011 11:24 AM, Tom Lane wrote:
>> select * from tablename
>> where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%']));
> If next version could have "not ilike ('', '')" added into window
> functions, that's will be great!
Why? And what's this got to do with window functions?
regards, tom lane
Hi Tom,
>>> select * from tablename
>>> where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%']));
>
>> If next version could have "not ilike ('', '')" added into window
>> functions, that's will be great!
>
> Why? And what's this got to do with window functions?
First, where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%'])) will
work for me.
But I feel " ilike ('str1', ... 'strN')" is more intuitive, isn't it?
I have a feeling that windows functions deal with all fancy functions. I
would consider ilike ('str'...) as a non-standard SQL command?
Emi
2011/8/30 Emi Lu <emilu@encs.concordia.ca>:
> First, where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%'])) will
> work for me.
>
> But I feel " ilike ('str1', ... 'strN')" is more intuitive, isn't it?
It is not. It is like "where id = (3, 5, 7)".
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On 2011-08-30, Emi Lu <emilu@encs.concordia.ca> wrote:
> Hi Tom,
>
>>>> select * from tablename
>>>> where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%']));
>>
>>> If next version could have "not ilike ('', '')" added into window
>>> functions, that's will be great!
>>
>> Why? And what's this got to do with window functions?
>
> First, where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%'])) will
> work for me.
>
> But I feel " ilike ('str1', ... 'strN')" is more intuitive, isn't it?
no, "('str1', ... 'strN')" looks a lot like a tuple.
if you know these strings beforehand use a single regular expression
instead because ilike is just regex in drag (postgres uses regex to do
ilike), and while ilike can only check one pattern at a time regex can
check several simultaneously.
foo ~* '^(str1|str2|str3...|strN)$'
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On 08/31/2011 03:16 AM, Emre Hasegeli wrote:
> 2011/8/30 Emi Lu<emilu@encs.concordia.ca>:
>
>> First, where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%'])) will
>> work for me.
>>
>> But I feel " ilike ('str1', ... 'strN')" is more intuitive, isn't it?
>
> It is not. It is like "where id = (3, 5, 7)".
What I mean is ilike ('%str1%', ... '%strN%')
I just forgot to put %
Emi
2011/8/31 Emi Lu <emilu@encs.concordia.ca>:
> On 08/31/2011 03:16 AM, Emre Hasegeli wrote:
>>
>> 2011/8/30 Emi Lu<emilu@encs.concordia.ca>:
>>
>>> First, where not (col1 ~~* any(array['str1%', 'str2%'... 'strN%'])) will
>>> work for me.
>>>
>>> But I feel " ilike ('str1', ... 'strN')" is more intuitive, isn't it?
>>
>> It is not. It is like "where id = (3, 5, 7)".
>
>
> What I mean is ilike ('%str1%', ... '%strN%')
>
> I just forgot to put %
it useless to introduce non SQL feature where some native feature exists now.
Regards
Pavel Stehule
>
> Emi
>
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