in the result set?
Please note that I am using the normal command line sqlite3.exe application. I
already started looking into soundex() yet unfortunately, it does not seem to
be compiled into the normal command like executable. I also doubt that it would
help?
Any help much appreciated,
Christophe
problems and remap them
accordingly.
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This e-mail may contain confidential information. If you
in there
beforehand as blobs.
But then, maybe I misunderstood?
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http://www.linkedin.com/in/multimedial
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+49(0)211- 17 80 48 94 // +49(0)177 249 70 31
***Note our new phone number. Thank you
, but this may be due to
the component we are using (i am not sure it is supporting the new
version of sqlite.dll)
Do you want me to mail you the corrupted database for further
inspection? I also understand that this is not the right place for
bugreports eventually.
Christophe Leske
this is what I like best about it:
it does the stuff it is supposed to do, no more, but also not less.
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Christophe Leske
www.multimedial.de - i...@multimedial.de
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Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
, but this may be due to the
component we are using (i am not sure it is supporting the new version of
sqlite.dll)
Do you want me to mail you the corrupted database for further inspection? I
also understand that this is not the right place for bugreports eventually.
Christophe Leske
information on the 25th.
Thank you for your patience,
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, but how can I contribute ?
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Hi,
can someone point me to some docs where the difference between a normal
where-clause and the Group by, and having statements are being
explained?
I don´t quite understand what these are actually good for.
Thanks,
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http
[EMAIL PROTECTED] wrote:
http://www.w3schools.com/sql/default.asp
Thanks! That is great!
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Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
Think of HAVING as being analogous to WHERE. While WHERE applies to
the TABLE, HAVING applies to the results of GROUP. Here is a contrive
yes, thank you.
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Lessingstr. 5 - 40227 Duesseldorf
constraint failed?
What does this mean?
Christophe Leske
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to be added are
already in the idlookup table.
It would be my understanding however that the or ignore statement
would silently let those inserts fail if they are already in?
What´s wrong here?
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Lessingstr
to do something like:
insert into idlookup
(
(
select * from cl1
UNION select * from cl2
UNION select * from cl3
UNION select * from cl4
UNION select * from cl5
)
where (lomi13.96 and loma13.96 and lami53.23 and lama53.23) and id
not in (select id from idlookup)
)
?
--
Christophe Leske
guesses in the code.
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Hi,
i am creating my table as such:
create temp table idlookup as select id from ...
I would like ID to be unique in my idlookup table. How would I do this
using this construct?
Or is it impossible?
--
Christophe Leske
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that.
Any chance to spare the ID field and get an index on the rowid for a given
table?
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
.
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
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that table. Are indices also
used for sorting results, or do they do just apply for searching?
Thanks in advance,
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
I being clear?
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for that case, but if the new result set has LESS
results than the previous one, then I end up with a temporary table
holding the new result set and leftovers from the previous one...
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PRAGMA omit_readlock=ON;
Hm, should be documented, no?
I could use that as well...
Just wondering if this has any speed advantages?
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a smaller
file?
In the example provided, the iDs are exactly the same, yet they are there
twice...
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
to make things faster better cheaper.
It IS doing what I want. However, it does not run on lower-spec machines, which
is why i am trying to optimize anything available.
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227
Any chance that you could hint at the subject matter of the questions
in the Subject line ? In this case it would appear to be Performance ...
Helps to get your questions answered !
;-)
Yes, will do so. My apologies.
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http
to build several statements which all have the where clause
in there.
Isn´t there something more tersed?
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, but you have to apply the WHERE
constraint only once because all the tables are identical.
Do you mind elaborating on this point? Is that what Igor wrote me?
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf
) and so forth.
Since it is depending on the distance from the ground and the rtree table only
works with coordinates, i cannot really include the class-attribute into the
rtree, hence several rtrees.
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elements when needed.
Thanks for any info,
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Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
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Hi,
is there a way to get the size of a :memory: db in the sqlite3.exe
command line interpreter?
Or any other way?
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Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
with only 3 fields? (string, and two ints?)
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Speedup tip:
http://article.gmane.org/gmane.comp.db.sqlite.general/41990
Hello Mike,
first of all, thank you for your tips.
Yes, i saw that posting, and i am already using it in my code.
But thanks again,
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www.multimedial.de - [EMAIL PROTECTED]
http
How many memory has your embedded project? You can create a new
in-memory database and copy there your database data.
That´s what i am currently doing, but we are using too much memory this
way, we are out of specs.
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http
Hi,
i was wondering if there is any compression/decompression extension for
read-only databases other than Dr Hipps compression extension, which
unfortunately is financially out of scope for my current project.
Thanks,
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http
How about storing the DB file in a cramfs filesystem
Forgot to say that this is Windows XP, sorry.
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www.multimedial.de - [EMAIL PROTECTED]
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0211 261 32 12 - 0177 249 70 31
looks pretty promising, is there any extension to sqlite which
could read a DB file from it under Windows?
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www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
not satisfy my criteria for a lean
and slim SQlite3 db access (read command line interpreter) I can use
in my DVD-ROM project.
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www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70
?
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www.multimedial.de - [EMAIL PROTECTED]
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Lessingstr. 5 - 40227 Duesseldorf - Germany
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all minus one coloumn in general.
When you obey these rules you will get very good read perfprmance from
Sqlite. The cacheing is important if you are using a slow disk or flash
memory. Look at shared cache mode if you have multiple users
Nope, just one from DVD.
Thanks again,
--
Christophe
, that will help ...
Have done that. It almost doubles my database, but it is worth it.
How about the cache size? or does this only pertain to databases which
get inserts?
(Techie note
http://20bits.com/2008/05/13/interview-questions-database-indexes/)
Christophe Leske
performance.
Indices have been set, would augmenting the cache size for Sqlite do
something?
Grateful for any info,
--
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www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
database was wrongly created (it was an
automatic conversion from an Access MDB file thought).
Thanks for any help,
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
looking for a
precompiled version of the DLL.
Thanks,
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
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Hi Petr,
I'm glad I can announce new stable version of Sqliteman - the GUI for
developers and admins:
http://sqliteman.com/
I gave it a try, and it seems as if SQLiteman can´t handle extensions
for databases, is this right?
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www.multimedial.de - [EMAIL PROTECTED]
http
the first selection? This used to work...
Can anyone help?
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Lessingstr. 5 - 40227 Duesseldorf - Germany
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, that was it! I was looking for the as sub part, i didn´t know how
to name my subquery.
Thanks a bunch,
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
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Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
Use actual field names in lookup table for idField, xField and yField.
Thank you!
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
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0211 261 32 12 - 0177 249 70 31
80Kb.
Smallest i am getting now is about 60Kb, and i can´t figure out what I
did, as this is exactly the same source code, minus the manifest file.
But even by readding it, the resulting dll is always bigger...
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longitudelongitude_minimal and longitudemaximal and
latitudelatitude_minimal and latitudelatitude_maximal?
Would that actually work?
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
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in for instance.
Is there any function that would allow for tests like new rect is
inside older rect ?
Thanks for any insights,
Christophe Leske
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I would like to thank all the participatns of this list for the very
useful information i got here the last days.
A big thank you to everyone, including of course Mr Hipp. The rtree
implementation is really quick and does work like a charm.
Best regards,
--
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database like the one I have?
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,
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- it
probably has to do with the fact that i am sorting at the end?
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,-1,6.950052,44.354508);
INSERT INTO table VALUES('San Bernolfo',6,-1,7.039278,44.263371);
INSERT INTO table VALUES('Murenz',6,-1,6.998868,44.348969);
INSERT INTO table VALUES('Bagni di Vinadio',6,-1,7.074884,44.290033);
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-- TIME for statement:2792
-- 11
A 3 field index (class_dds, latitude_dds, longitude_dds):
-- TIME for Between statement:2783
-- 11
-- TIME for statement:2762
-- 11
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Christophe Leske schrieb:
Question, have you tried an index on class_dds, longitude_DDS, and
latitude_DDS?
CREATE INDEX tableidx ON table (class_dds, longitude_DDS, latitude_DDS);
Since all three fields are used in the query, I am curious if that would
help in any way.
Doesn´t
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?
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version? Or does anyone have a
precompiled DLL binary for me?
Any help is much appreciated
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http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
. Is there any document that would show some
steps on how to compile the source for Windows in order to create an extension?
I am sorry, but i am complete newbie to Sqlite's source.
But SQLite rocks!
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com
the source ZIP and the rtree files pointed
out by Dr Hipp. I am targeting Windows XP, single processor, and using Visual
Studio 2005, but i am not bound to this if there are better options.
I just got something by setting up a simpe project in Visual Studio 2005.
Christophe Leske
Sorry, I was too quick - i now got a 80Kb rtree.dll file which seems
fine. I will test it.
Thanks to everyone for your support,
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249
wurde nicht gefunden.
The last sentence says that the specified procedure can´t be found.
Any help is much appreciated - again, i am on Windows, using Visual Studio 2005.
Thanks and greets,
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
of switching to an RTree
index) using a query like this.
Thank you very much, that was very helpful and informative. I will do so.
Thnks again,
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12
how we can this thing to work with my data ...
Thank you,
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf - Germany
0211 261 32 12 - 0177 249 70 31
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this table for queries?
I reckon I would further use the IDs I got back from the query to look
up the corresponding records in my normal table, right?
Something like
select * from cities where cities.id=(select id from cityLookUp where
??? Long and Lat clause)
--
Christophe Leske
only cities for the time being! Does it make
sense to use rtree then?
Sorry if i am abusing the help of this list - I like SQlite and have
studied it for personal pleasure so far, but I am by all means no
database expert.
Greets,
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http
(a country like france for instance),
as well as very small areas (maximum zoom).
I added an index on the ID field for the search in the city database,
that helped a bit, but i am dissapointed that the rtree search is not
faster than the normal search for bigger areas...
--
Christophe Leske
citylookup where
(citylookup.longitude_min21.477932 and
citylookup.longitude_max29.315407) and
(citylookup.latitude_min40.614945 and
citylookup.latitude_max44.657669)) and cities.class_dds6 order by
class_dds limit 80
-- 36
--
Christophe Leske
www.multimedial.de - [EMAIL PROTECTED]
http
Hi,
every SQlite file that has extension files in it is being reported to me
by SQLite Database Browser as being empty.
Is there any GUI app on Windows that can handle databases which have
extension tables in it?
--
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www.multimedial.de - [EMAIL PROTECTED]
http
for its position (which i need to position a label).
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i
better duplicate the lat/long data then in my city table.
Uh, i am never satisfied! :-)
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0211 261 32 12 - 0177 249 70 31
set PRAGME
CACHE as well...
Thanks in advance,
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www.multimedial.de - [EMAIL PROTECTED]
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away,
thanks,
Christophe Leske
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on how to analyze my queries. I should probably do that,
yet i am unfamiliar with reading the output of the Explain command.
Thanks for your time and eventual help,
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www.multimedial.de - [EMAIL PROTECTED]
http://www.linkedin.com/in/multimedial
Lessingstr. 5 - 40227 Duesseldorf
Goto 0 11000
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