Thanks!
It's working
Janek
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Hi,
I want to delete duplicates in my table. I've dropped the unique constraint to
insert my data.
My id value is a hash calculated witch the values of the two other columns.
So I want to delete all columns, which are indentical, but keeping one.
DELETE FROM table t1 USING table t2 WHERE
Hi,
How can I realize the line?
v_res := cast(x'v_tmp' as bigint);
v_tmp is a text variable with hex digits.
this works:
v_res := cast(x'6de14a8b478ac' as bigint);
I think its about quoting
Janek
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Thanks!
That's what I'm searching for.
Janek
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Hi,
I want to insert data in my table and I want to insert the rows, which don't
violates the unique contraint of my id. I'm using a 64bit hash for my it.
If I do one insert statement, which inserts many rows it doesn't do anything if
one row violates the unique contraint.
Is there a faster
Hi Salah Jubeh,
My files don't have this format. Could it make sense to create such a file with
php and import the data from it?
Or ist also possible the get certain rows from the file with regexp?
Janek
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Hi Salah Jubeh,
I'm not in hurry ;)
Thanks for your answer. Thats what I've been searching for.
Janek Sendrwoski
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('largest length m reach') AND vector @@
to_tsquery('3.3 306 bodi cat kg');
And thats very slow
I didn't know that the pg_trgm Module provides KNN search.
Janek Sendrowski
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Sorry, I used AND-statements instead of OR-statement in the example.
I notices that gin is much faster than gist, but I don't know why.
The query gets slow, because there are many non-stop words which appear very
often in my sentences, like in 3% of all the sentences.
Do you think it could be
), but it's all to slow or not suitable.
Soundex and Metaphone aren't suitable, as well.
I'm already working on this project since a long time, but without any success.
Do any of you have an idea?
I would be very thankful for help.
Janek Sendrowski
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of hashvalue for each row to filter the
rows dirty at first.
Thank you for your help
Janek Sendrowski
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Hi,
Is there a documentation of postgresql's C functions like SET_VARSIZE for
exmaple?
Janek Sendrowski
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Hi,
How is it possible to debug user defined functions written in C.
I can't just include all the files and run it.
Does anyone have an idea?
Janek Sendrowski
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t
/usr/bin/ld: cannot find -lxml2
/usr/bin/ld: cannot find -lpam
/usr/bin/ld: cannot find -ledit
collect2: ld returned 1 exit status
make: *** [test] Error 1
Does anyone have an idea?
Janek Sendrowski
directories...
Sorry, if this question is to silly, but what do I wrong?
Janek Sendrowski
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the postgresql-server-dev-9.3 package?
Janek Sendrowski
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filename, I
have the issue with the includes.
Janek Sendrowski
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for first.
Janek Sendrowski
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t find -lxslt
/usr/bin/ld: cannot find -lxml2
/usr/bin/ld: cannot find -lpam
/usr/bin/ld: cannot find -ledit
collect2: ld returned 1 exit status
make: *** [test] Error 1
Does anyone have an idea?
Janek Sendrowski
Thanks for your help!
I updated to version 9.3 and now it's working.
Janek Sendrowski
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who can help me
Janek Sendrowski
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Hi,
My current version is 9.2. I could just update it.
I got the pg_trgm from here:
http://git.postgresql.org/gitweb/?p=postgresql.git;a=tree;f=contrib/pg_trgm;hb=refs/heads/master
And the regex files from here:
Hi Amit,
Do you think it would by difficult to edit the source and wirte a new function,
wich does it?
Janek Sendrowski
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Hi,
I like to change the source code of the pg_trgm extension a little bit.
Where can I get the source code and how do I compile it?
I can only find the SQL-files of pg_trgm in my directories.
Janek Sendowksi
Thanks a lot for your Answers.
That's what I was looking for.
I couln't find it.
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a ranking...
something like SELECT similarity('How are your', { ho,how,are,re ,
hi,wha,hat,at , a}::trgm);
I hope you have an idea
Janek Sendrowski
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to change the source code?
Thanks for your help
Janek Sendrowski
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+ radius)
...
Now I'm searching for a suitable index.
Does any of you have an idea?
TX very much for any support!
Janek Sendrowski
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Thanks for your Answers!
@Martijn van Oosterhout
I am always searching for single colums. The values are different every time,
because these are distances from my new sentence to my pivots.
Does the Index support a query with this WHERE statement: WHERE value BETWEEN
(distance1 - radius)
Hi,
I am trying to build my database with a metric index. I am using a Fixed Query
Array.
I have got a table with many sentences of natural languages. I'm using the Dice
Coefficient for calculating the metric space.
I am going to take a certain number of sentences and use them as pivots by
bytes?!
Janek Sendrowski
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Do you know the destination. I cant find it.
Hi,
Im searching for an optimized Levenshtein Distance like Postgresqls. My problem is that I want to compare strings with a length over 255 characters.
Does anyone know a solution?
Janek Sendrowski
into the temp table?
Janek Sendrowski
The links dont work.
I dont know why.
how just dont know how to insert the data of a record in a table
Hi,
Why is it only possible to store one row by a query which returns multiple rows using the SELECT INTO statement.
and
How can I do a Query on a record varialbe,somehow like this:
SELECT * FROM v_rec
Janek Sendrowski
.
Janek Sendrowski
count
smith 0 to 25 5
smith 25 to 507
smith 50 to 752
jones 0 to 25 11
jones 25 to 501
jones 50 to 753
Hope someone who can help me
Janek Sendrowski
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Sorry, I formulated it wrong.
My problem is, that I want to count the ranges for every user, but if I usecount(range), it counts the ranges of all users.
Janek Sendrowski
Hi,
I have an array and I want to import the data rowwise.
Would it make sense to use a function which calls a prepared statement in a
loop to import the data performant?
Or can I somehow use the COPY FROM command?
Janek Sendrowski
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me.
Janek Sendrowski
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Von:bricklen brick...@gmail.com
An:Janek Sendrowski jane...@web.de
Cc:pgsql-general@postgresql.org pgsql-general@postgresql.org
Betreff:Re: [GENERAL] devide and summarize sql result (all)
On Thu, Aug 15, 2013 at 1:51 PM, Janek Sendrowski jane...@web.de wrote:
Hi,
My sql query results sth. like
Hi,
My sql query results sth. like this:
user percentage
franz 78%
smith 98%
franz 81%
jason
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Hi,
My sql query results sth. like this:
user percentage
franz 78%
smith 98%
franz 81%
jason 79%
smith 89%
smith 85%
smith 99%
Now Id like to summarize the percentages oder every user like this.
smith
2 matches 95-100%
2 matches 85-95%
0 mathes 75-85%
franz
0 mathes 95-100%
...
Hi Sergey Konoplev,
If I'm searching for a sentence like The tiger is the largest cat species for
example.
I can only find the sentences, which include the words tiger, largest, cat,
species, but I also like to have the sentences with only three or even two of
these words.
Janek
--
Thanks for your answers.
@Amit Langote: I had a look and found out that pg_bigm doesn't support similar
matches
@Dann Corbit: The idea with the sequences makes sence. I had a look and I'm not
sure, if they support similar sequences
Janek
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Hi,
I'm searching for an algorithm/Index to find similar sentences in a database.
The Fulltextsearch is not really suitable because it doesn't have a tolerance.
The Levenshtein-distance ist to slow.
I also tried pg_trgm module, which works with tri-grams, but it's also very
slow with 100.000+
Hi,
Im searching for a suitable Index for my query witch compares Strings with the
Levenshtein distance.
I read that a prefix index would fit, but I dont know how to build it. I only
know that its supported by Gist.
I couldn't find an instructions so I hope someone can help me.
Best
Hi,
Im searching for a suitable Index for my query witch compares Strings with the Levenshtein distance.
I read that a prefix index would fit, but I dont know how to build it. I only know that its supported by Gist.
I couldnt find aninstructions so I hope someone can help me.
Best regards,
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