[mailto:mickamus...@gmail.com]
Gesendet: Montag, 07. Juli 2014 17:11
An: General Discussion of SQLite Database
Betreff: [sqlite] sqlite & INNER JOIN & vtable
Hi,
In my case I've a normal sqlite table : toto and an vtable : special
This is the typical request that I have :
SELECT toto.
Virtual tables are just like any other tables. The kind of join is the matter
of you expectations from the query outcome. > Hi, > > In my case I've a normal
sqlite table : toto > and an vtable : special > > This is the typical request
that I have : > > SELECT toto.id, toto.name, special.info FRO
Hi,
In my case I've a normal sqlite table : toto
and an vtable : special
This is the typical request that I have :
SELECT toto.id, toto.name, special.info FROM toto INNER JOIN special ON (
special.id = toto.specialid AND toto.test == TRUE )
I don't know if I should use LEFT JOIN, RIGHT JOIN or
> update dzhhq set mnote=
> case when mnote in (select mnote from dzhhq inner join (select bs,stkcode
> from buysell) b on dzhhq.stkcode=b.stkcode) then 'sell'||mnote
> else mnote
> end
> is ok, but when I use this cmd then appear error msg:
> update dzhhq set mnote=
> case when mnote in (sele
update dzhhq set mnote=
case when mnote in (select mnote from dzhhq inner join (select bs,stkcode from
buysell) b on dzhhq.stkcode=b.stkcode) then 'sell'||mnote
else mnote
end
is ok, but when I use this cmd then appear error msg:
update dzhhq set mnote=
case when mnote in (select mnote from dzh
> The problem is that I would like to avoid splitting the query into two parts.
> I would expect SQLite to do the same thing for me automatically (at least in
> the second scenario), but it does not seem to happen... Why is that?
In short, because SQLite cannot read your mind.
To understand the
Hello.
I have two tables to join. TABLE_A (contains column 'a') and TABLE_BC (contains
columns 'b' and 'c'). There is a condition on TABLE_BC. The two tables are
joined by 'rowid'.
Something like:
SELECT a, b, c FROM main.TABLE_A INNER JOIN main.TABLE_BC WHERE (b > 10.0 AND c
< 10.0) ON main.
, 2009 4:55 PM
To: 'General Discussion of SQLite Database'
Subject: Re: [sqlite] Inner Join Performance Issue
I just ran EXPLAIN, how can I tell if the Indexes are used?
I just read, that with an operator "like '%a%'" SQLite won't use an Index.
Is this the case?
Than
On 22 Oct 2009, at 9:55pm, Ralf wrote:
> I just read, that with an operator "like '%a%'" SQLite won't use an
> Index.
> Is this the case?
The '%' at the beginning of that operand indicates that the first
character of the string can be anything. An index is of no use if you
don't know what
gt; boun...@sqlite.org] Im Auftrag von John Crenshaw
> Gesendet: Donnerstag, 22. Oktober 2009 05:53
> An: General Discussion of SQLite Database
> Betreff: Re: [sqlite] Inner Join Performance Issue
>
> Try to EXPLAIN the query and verify that the index is actually used.
> There ar
, October 21, 2009 5:50 PM
To: 'General Discussion of SQLite Database'
Subject: [sqlite] Inner Join Performance Issue
Hello Forum,
[>> ]
I have a select that joins 15 Tables the where clause consist of 8 like
relations (all fields are indexed), this is to implement a sort of
&quo
Hello Forum,
[>> ]
I have a select that joins 15 Tables the where clause consist of 8 like
relations (all fields are indexed), this is to implement a sort of "search
engine".
The performance is awful. It takes around 10sec.
Is this how it should be or is there anything I can do?
If you need more
Cnichols wrote:
> Igor Tandetnik wrote:
>>
>> Cnichols wrote:
>>> Ok I also tried to think about it from a different approached and
>>> didnt get the result I wanted ...
>>>
>>> SELECT COUNT() FROM Temp
>>> WHERE Id IN (SELECT QuestionId FROM Stats WHERE SessionId = 7)
>>>
>>> I expected that to
Thanks you for all your help!
FMI:
Is it possible for it to return not distinct pairs also?
Thanks again!
Igor Tandetnik wrote:
>
> Cnichols wrote:
>> Ok I also tried to think about it from a different approached and
>> didnt get the result I wanted ...
>>
>> SELECT COUNT() FROM Temp
>> WHERE
Cnichols wrote:
> The following produces 52 results, which consists of 52 questions
> that where incorrect from session 6, the previous session, we are now
> in a new session, session 7
>
> SELECT COUNT() FROM Questions Q
> LEFT JOIN Stats S ON S.QuestionId = Q.Id
> WHERE S.SessionId = 6
> AND S.C
Cnichols wrote:
> Ok I also tried to think about it from a different approached and
> didnt get the result I wanted ...
>
> SELECT COUNT() FROM Temp
> WHERE Id IN (SELECT QuestionId FROM Stats WHERE SessionId = 7)
>
> I expected that to return 46 results .. it returned 29? ... also kind
> of confu
Cnichols wrote:
> Igor Tandetnik wrote:
>>
>> "Cnichols" wrote
>> in message news:21685825.p...@talk.nabble.com
>>> Stats does contain 46 qids with sids of 7
>>> there is one duplicate question now that i look harder in temp which
>>> is ok because 289 I forgot to mention that id in temp is not a
I am trying to keep my thoughts as organized as possible. I want to refresh
and try to simplify my question ...
The following produces 52 results, which consists of 52 questions that where
incorrect from session 6, the previous session, we are now in a new session,
session 7
SELECT COUNT() FROM
Ok I also tried to think about it from a different approached and didnt get
the result I wanted ...
SELECT COUNT() FROM Temp
WHERE Id IN (SELECT QuestionId FROM Stats WHERE SessionId = 7)
I expected that to return 46 results .. it returned 29? ... also kind of
confusing
What I was thinking that
I expected it to return 46 results, not fewer as you mentioned, except it
returns 51 which I am trying to figure out why ... there is only one
duplicate in Temp, but why would that still produce more results then 46?
Igor Tandetnik wrote:
>
> "Cnichols" wrote
> in message news:21685825.p...@tal
"Cnichols" wrote
in message news:21685825.p...@talk.nabble.com
> Stats does contain 46 qids with sids of 7
> there is one duplicate question now that i look harder in temp which
> is ok because 289 I forgot to mention that id in temp is not a key,
> this is because there is a test mode to ask rand
Thanks for the reply.
Stats does contain 46 qids with sids of 7
there is one duplicate question now that i look harder in temp which is ok
because 289 I forgot to mention that id in temp is not a key, this is
because there is a test mode to ask random questions that aren't unique (so
289 was aske
"Cnichols" wrote
in message news:21676221.p...@talk.nabble.com
> What i am trying to do right now is select the questions that have
> been asked for the current session (ie 7)
> Stats - contains 46 rows with sessionid of 7
> Temp - holds 52 missed questions from the previous session (6)
>
> exampl
On 27/01/2009 12:00 PM, Cnichols wrote:
> I have stumped myself with this sql goal.
>
> With this statement I am working with 3 tables
> Stats - contains question asked history and if it was answered correcty
> sessionid
> questionid
> correct
> Questions - contains a list questions and mul
I have stumped myself with this sql goal.
With this statement I am working with 3 tables
Stats - contains question asked history and if it was answered correcty
sessionid
questionid
correct
Questions - contains a list questions and mul choice answers and answer
id - pk
.
et
I would like to be able to accomplish the following but don't see any
support for inner joins on update queries.
update A
set Id = B.Id
from A inner join B
on A.Field1 = B.Field_Temp
where B.Price > 0
Is this possible? What is the syntax of this query please?
I once posted about that on this mailing list and one of the solution Mr
DRH suggested was to auto-expand the table name ( would
become SELECT * FROM ) internaly in the SQLite API, but I
have no idea if any efforts were put in that direction since it could
probably break the old syntax.
Ce fut un
Sweet... works right perfect.
Can it be considered as a bug?
Merci beaucoup!
Guille
Simon Berthiaume wrote:
I think I know what the problem is. SQLite doesn't like having a table
name following an openint parenthesis "(" in the FROM clause. Try the
following statements instead:
SELECT main.id,
I think I know what the problem is. SQLite doesn't like having a table
name following an openint parenthesis "(" in the FROM clause. Try the
following statements instead:
SELECT main.id, prim.primname, sec.secname
FROM
main
INNER JOIN
sec
ON
main.se
Hi,
I've had problems with inner join transactions.
Here is what I do:
I create the tables:
sqlite> create table main (
...> id integer primary key,
...> primid int(10),
...> secid int(10)
...> );
sqlite>
sqlite> create table prim (
...> primid integer primary key,
...> primnam
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