WITH RECURSIVE syntax. Their original
request specified Oracle10g-compatible CONNECT-BY syntax. It depends on
what the sponsor really wants. (We await their reply.)
The code will only make it into trunk if the sponsor selects WITH RECURSIVE.
On Wed, Jan 8, 2014 at 1:33 PM, Petite Abeille
Hello,
On Jan 6, 2014, at 6:51 AM, James K. Lowden jklow...@schemamania.org wrote:
You're welcome to your opinion, of course. But you're really not answering
my point, and I object to your assertion that I'm clinging to 1986.
Apologies about that. The 1986 reference was more pointed to
On Jan 5, 2014, at 6:56 PM, Igor Tandetnik i...@tandetnik.org wrote:
On 1/4/2014 7:15 PM, Elrond wrote:
Short: Could you implement alter table rename column?
The problem would be, what to do with all the indexes, triggers, views and
foreign keys that reference that column?
Sure, but
On Jan 4, 2014, at 8:05 PM, James K. Lowden jklow...@schemamania.org wrote:
That's an aesthetic judgement. Even if I agreed, it doesn't change the
fact that every language feature is an element of complexity,
and redundant language features are needless complexity.
Things change. Syntax
On Jan 4, 2014, at 11:34 PM, RSmith rsm...@rsweb.co.za wrote:
. I think in America the term Captain Obvious is used for the author of
such a statement.
This sounds like a job for ObviousMan!
http://treesflowersbirds.files.wordpress.com/2010/01/obviousman.jpg
things _are_ moving forward
On Jan 1, 2014, at 10:55 PM, James K. Lowden jklow...@schemamania.org wrote:
CTE ... bring capabilities to the users, by simplifying
the use of the underlying tool.
CTEs would add complexity, not simplify.
Nonsense, dear Sir :)
Yes, a ‘with’ clause is just syntax sugar providing named
On Dec 30, 2013, at 1:48 PM, Richard Hipp d...@sqlite.org wrote:
One example:
sqlite3_exec(INSERT OR IGNORE INTO ;);
if( sqlite3_changes()==0 ){
sqlite3_exec(UPDATE ...);
}
This is rather error prone and may results in, well, unexpected results.
How to lose your data in
On Dec 31, 2013, at 5:37 PM, Richard Hipp d...@sqlite.org wrote:
In addition to the above, there are countless new test cases and minor
feature and performance enhancements.
Thank you so much for for all the hard work :)
Our goal is to maintain this aggressive pace of innovation and
On Dec 26, 2013, at 11:49 AM, dean gwilliam mgbg25...@blueyonder.co.uk wrote:
...is this possible or should I return the whole lot and subject it to a
regexp filter to get my cut-down list?
http://www.sqlite.org/lang_expr.html#like
___
On Dec 9, 2013, at 8:01 PM, Warren Young war...@etr-usa.com wrote:
I remember reading an essay by a user of controlled substances
Your next reading assignment is a book[3] on a functional programming
language,
So… do you make your functions wear a purity ring? To keep them, hmmm, chaste?
On Nov 24, 2013, at 3:17 PM, Doug Currie doug.cur...@gmail.com wrote:
There is value in compatibility, but those adjectives are awful.
FWIW, DETERMINISTIC is what Oracle uses:
http://docs.oracle.com/cd/E11882_01/appdev.112/e25519/function.htm#LNPLS1183
I would personally stick to that if
On Nov 24, 2013, at 7:10 PM, Valentin Davydov sqlite-u...@soi.spb.ru wrote:
Wait a second... and you'll get different value of datetime('now'). In this
sense datetime() is as deterministic as random(): it may give the same result
next invocation or may not, dependng on various circumstances
On Nov 16, 2013, at 4:11 PM, James K. Lowden jklow...@schemamania.org wrote:
The logical equivalent of MERGE is accomplished by one INSERT and one
UPDATE inside a user-defined transaction. Given SQLite's locking
semantics, it's atomic. Nothing procedural about it.
Well, one would still
On Nov 16, 2013, at 11:02 PM, Kees Nuyt k.n...@zonnet.nl wrote:
For the application, the merge would look like a single
INSERT INTO merge_t statement.
H…. clever lateral thinking, but I doubt this will fly in practice :)
Two main issues:
(1) ‘or ignore’ is most likely inappropriate as
On Nov 13, 2013, at 4:38 PM, Simon Slavin slav...@bigfraud.org wrote:
I still don't know what function that MERGE does that you can't do in SQLite.
Are you asking what MERGE does? Or if it’s possible to somehow emulate that
functionality in SQLite? If the later, then yes, surely one could
On Nov 13, 2013, at 8:03 PM, Simon Slavin slav...@bigfraud.org wrote:
or do they need some specific functionality which MERGE has and SQLite
doesn’t.
There are no equivalent in SQLite at all. One cannot do even the most basic of
upsert with the SQL available. The functionality is just not
On Nov 12, 2013, at 9:49 AM, Simon Slavin slav...@bigfraud.org wrote:
The merge statement is really missing in sqlite…
Yes, very much so.
SQLite does have this form of the INSERT statement:
http://www.sqlite.org/lang_conflict.html
Sadly, none of these ‘on conflit’ options are of any use
On Nov 10, 2013, at 1:51 AM, BULUSLI quanwei9...@126.com wrote:
hello Sir,I don't Know this isn't a bug
http://www.sqlite.org/compile.html#enable_update_delete_limit
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On Nov 6, 2013, at 7:42 PM, Ulrich Goebel m...@fam-goebel.de wrote:
Every hint is welcome!
Don't store your files in the database. Store them on the file system, as the
Almighty intended. Much simpler and flexible altogether.
Perhaps of interest:
On Nov 6, 2013, at 8:00 PM, Richard Hipp d...@sqlite.org wrote:
See http://www.sqlite.org/whentouse.html#appfileformat for further thoughts
on this. SQLite is commonly used as an application file format. In such
cases, it is entirely appropriate to store content files directly in the
On Oct 26, 2013, at 2:08 AM, James K. Lowden jklow...@schemamania.org wrote:
awk is your friend.
'cut' is even friendlier for simple tasks like those :)
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On Oct 16, 2013, at 7:20 AM, Darren Duncan dar...@darrenduncan.net wrote:
On 2013.10.14 11:58 PM, Sqlite Dog wrote:
seems like SQLite is not checking trigger SQL for invalid column names
until execution?
What you describe sounds like the behavior of every SQL DBMS which has
triggers
On Oct 9, 2013, at 2:50 AM, Bao Niu niuba...@gmail.com wrote:
For SQLite is there an easy way to find out ALL other tables, queries and
triggers that will be affected when performing a change to a particular
column under the cursor?
No.
That would make refactoring so much easier.
Yes.
On Oct 8, 2013, at 8:10 PM, Stephan Beal sgb...@googlemail.com wrote:
(link to the original post not included because the archives are only
visible to list members):
Hmm?
http://news.gmane.org/gmane.comp.version-control.fossil-scm.user
___
On Sep 23, 2013, at 6:19 PM, Jean-Marie CUAZ jm.c...@orens.fr wrote:
- no exception is raised to host langage Tcl for 2 rows not inserted because
a UNIQUE constraint is not respected
- partial execution : 2 rows are definitely deleted from the table ...(ouch
!)
Yep. Looks like it does
On Sep 24, 2013, at 7:59 PM, Dan Kennedy danielk1...@gmail.com wrote:
A double quoted string is treated as a column name if possible, or a
string literal otherwise. It's an SQL thing.
Nah. The second part is a SQLite thing. Randomly converting identifiers into
literals is more of a
On Sep 24, 2013, at 7:54 PM, Marc L. Allen mlal...@outsitenetworks.com
wrote:
Yep. What most people want is an INSERT OR UPDATE.
Yep. Which is what one usually calls 'MERGE':
http://en.wikipedia.org/wiki/Merge_(SQL)
And sadly, SQLite doesn't provide anything like that at all. Oh, well…
On Sep 24, 2013, at 8:06 PM, Marc L. Allen mlal...@outsitenetworks.com wrote:
Considered harmful? How so? I wouldn't mind a version of ON CONFLICT UPDATE
fieldlist.
In its current form.
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On Sep 24, 2013, at 8:09 PM, Marc L. Allen mlal...@outsitenetworks.com wrote:
Not complaining, mind you. MS SQL doesn't have it, and I've long learned to
deal with it.
MS SQL Server sports a MERGE statement if I'm not mistaken:
http://msdn.microsoft.com/en-us/library/bb510625.aspx
On Sep 24, 2013, at 8:05 PM, Simon Slavin slav...@bigfraud.org wrote:
Which is why you do an INSERT first, and allow it to fail, then do the UPDATE.
Sure. A lot of error proce procedural code to do what one SQL statement could
do much more naturally.
On Sep 24, 2013, at 8:16 PM, Simon Slavin slav...@bigfraud.org wrote:
The first version (INSERT OR FAIL, then UPDATE) won't lead to any SQLite
errors if one of the rows already exists. So you can do a whole lot of both
lines in one transaction and the transaction will still succeed.
Is
On Sep 17, 2013, at 10:19 PM, Paolo Bolzoni paolo.bolzoni.br...@gmail.com
wrote:
Sorry for the out topic, but why you want to leave 0mq? We always found it
great...
Isn't nanomsg the successor of ZeroMQ? I.e. same guy, same project, mark 4 or 5?
On Sep 16, 2013, at 10:48 AM, Niall O'Reilly niall.orei...@ucd.ie wrote:
Consecutive closed intervals overlap. Depending on the
application, this may be a problem; it can be avoided by
using half-open ones.
What about simply using not overlapping intervals and call it a
On Sep 15, 2013, at 12:53 AM, Kees Nuyt k.n...@zonnet.nl wrote:
3) If an SQL-statement generally contains more than one reference
to one or more datetime value functions, then all such ref-
erences are effectively evaluated simultaneously.
FWIW, Oracle concurs:
All of the datetime
On Sep 15, 2013, at 8:31 PM, William Drago wdr...@suffolk.lib.ny.us wrote:
Thanks for the reply. Seconds since the epoch does make a good timestamp. Is
that what is normally used to extract data between time periods?
(Date Time seems to be a popular topic at the moment)
There is nothing
On Sep 15, 2013, at 10:32 PM, Keith Medcalf kmedc...@dessus.com wrote:
On the other hand, if one knows that the value of 'now' is not stable then
one can always bind a parameter with the appropriate value set from the host
language
Or write it down somewhere once (i.e temp table), or
On Sep 14, 2013, at 4:24 AM, James K. Lowden jklow...@schemamania.org wrote:
Why not
SELECT * FROM entry WHERE
bankdate = date('now','start of month')
AND bankdate date('now','start of month','+1 month')
The half-open interval strikes again! :-)
Yeah... not sure
On Sep 4, 2013, at 4:21 PM, Yuzem naujnit...@gmail.com wrote:
I want to construct genres icons and each icon must display 4 movies.
Assuming this is IMDB… what about a scalar subquery?
For example, assuming a slightly different schema from yours:
selectgenre.code as genre,
(
On Sep 5, 2013, at 8:56 PM, Yuzem naujnit...@gmail.com wrote:
SELECT genres FROM genres LEFT JOIN movies ON genres.movies = movies.movies
GROUP BY genres ORDER BY genres;
time: 2.475s
SELECT genres FROM genres JOIN movies ON genres.movies = movies.movies GROUP
BY genres ORDER BY genres;
On Sep 5, 2013, at 10:28 PM, Yuzem naujnit...@gmail.com wrote:
Ok, wonderful, now it is working correctly but how do I select multiple
columns from table movies?
Should I add another sub query?
Nope. You have now changed the problem definition, so scalars will not be a
good fit. Blindly
On Sep 5, 2013, at 11:27 PM, Yuzem naujnit...@gmail.com wrote:
Any clue on why LEFT JOIN is so slow when used with genres but not with
larger tables?
Sure. But your conclusion is a most likely a red herring. The crux of the
matter is that inner and outer join have a wildly different
On Sep 5, 2013, at 9:45 PM, Yuzem naujnit...@gmail.com wrote:
It is incredibly fast but it gives me the wrong result:
Yeah… you forgot the 'where' clause in the subquery… you need to restrict it on
the genre
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On Aug 31, 2013, at 6:42 PM, James K. Lowden jklow...@schemamania.org wrote:
I changed the data (see below) because *meaning* of recordings.ends
should be an exclusive end, what's knows as a half-open interval.
That makes the question of does b follow a one of equality. It is
likely not the
On Aug 13, 2013, at 4:11 PM, techi eth techi...@gmail.com wrote:
Trigger Logic!!!
Default Constraint Behaviour!!!
sqlite3 error string size!!!
Number of Colum!!!
What's up with the triple exclamation marks since July 22nd?
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On Aug 8, 2013, at 3:40 PM, Christopher W. Steenwyk csteen...@gmail.com wrote:
This database is generated once, and then queried and interrogated multiple
times. So I am most concerned with read speed and not with writing or
updating.
Ohohoho… in that case… I have some snake oil to sell you,
On Aug 7, 2013, at 8:54 PM, Christopher W. Steenwyk csteen...@gmail.com
wrote:
The attached query takes over 6 days to run.
“Patience – A minor form of despair, disguised as a virtue.”
Also… attachments are stripped out by the mailing list. You may want to try to
inline them instead.
On Aug 7, 2013, at 9:25 PM, Christopher W. Steenwyk csteen...@gmail.com wrote:
Ah, sorry about the attachments, you can find the files here:
https://www.dropbox.com/l/fpFfcjwwcyhXZgduswCggb
And yes, as the final part of the DB creation I do run ANALYZE. And I do
think the indexes are
On Aug 7, 2013, at 9:25 PM, Christopher W. Steenwyk csteen...@gmail.com wrote:
Ah, sorry about the attachments, you can find the files here:
https://www.dropbox.com/l/fpFfcjwwcyhXZgduswCggb
Ah, also, your schema has a very, hmmm, Entity–attribute–value (EAV) smell to
it (object, attribute,
On Jul 23, 2013, at 9:32 PM, Max Vlasov max.vla...@gmail.com wrote:
On Tue, Jul 23, 2013 at 10:09 PM, Petite Abeille
petite.abei...@gmail.comwrote:
On Jul 23, 2013, at 9:52 AM, Max Vlasov max.vla...@gmail.com wrote:
Basically it's several tables implementing Object-Propery-Value
On Jul 23, 2013, at 9:52 AM, Max Vlasov max.vla...@gmail.com wrote:
Basically it's several tables implementing Object-Propery-Value metaphor
Hurray! The Entity–attribute–value (EAV) anti-pattern!
… an EAV based approach is an anti-pattern which can lead to longer
development times, poor use
On Jul 22, 2013, at 3:29 PM, Marco Bambini ma...@sqlabs.net wrote:
I have a virtual FTS4 table and I would like to search for some terms inside
a word, is that possible?
Not with the default tokenizers, but perhaps you could write your own, say an
ngram tokenizer or such.
On Jul 21, 2013, at 7:47 PM, Igor Tandetnik i...@tandetnik.org wrote:
This query is in fact perfectly legal. It's OK to refer to column aliases in
ORDER BY clause.
Perhaps in SQLite, yes.
select 1 as a order by 1;
select 1 as a order by a;
select x as a from ( select 1 as x ) order by a;
On Jul 21, 2013, at 10:15 PM, ss griffon ssgriffonu...@gmail.com wrote:
I'm writing an extension to SQLite that adds some aggregate functions.
Some of them, require that the rows passed to the aggregate function
be sorted. It seems as if lots of data bases (MySQL, PostgreSQL)
support an
On Jul 17, 2013, at 9:07 PM, Joseph L. Casale jcas...@activenetwerx.com wrote:
I am using Python to query a table for all its rows, for each row, I query
related rows from a
second table, then perform some processing and insert in to a third table.
What is the technically correct approach
On Jun 25, 2013, at 11:19 AM, Nißl Reinhard reinhard.ni...@fee.de wrote:
because it stays in quotation mode until it finds a further , which is
incorrect. Quotation mode may only get activated when appears at the
beginning of a column value.
Meh… check the recent escape quote for csv
On Jun 18, 2013, at 10:02 PM, Clemens Ladisch clem...@ladisch.de wrote:
(There is no official CSV standard, and there is no widely supported
escaping mechanism.)
Perhaps. But that's not an excuse to ignore the de facto convention:
Common Format and MIME Type for Comma-Separated Values (CSV)
On Jun 18, 2013, at 10:46 PM, Roland Hughes rhug...@cincinnati-test.com wrote:
It isn't documented anywhere, but, you have to BOTH quote the string AND
double up the quotes inside of it.
Indeed:
7. If double-quotes are used to enclose fields, then a double-quote
appearing inside
On Jun 18, 2013, at 11:07 PM, Roland Hughes rhug...@cincinnati-test.com wrote:
and tools.ietf.org is exactly WHERE on the sqlite.org path?
Everything is amazing and nobody is happy -- Louis CK
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On Jun 17, 2013, at 6:14 PM, Roman Fleysher roman.fleys...@einstein.yu.edu
wrote:
Dear SQLiters,
First thing first… don't hijack a thread… instead start a new one, with a new
subject.
Can someone recommend an ORM?
No.
What are the pros and cons of using them?
On Jun 9, 2013, at 5:25 PM, E.Pasma pasm...@concepts.nl wrote:
Yes, unfortunately. I would love to see some form of UPDATE FROM make it
into SQLite, but none such exists at the moment.
--
Igor Tandetnik
Possibly INSERT OR REPLACE is useful when multiple columns need to be updated.
On Jun 5, 2013, at 9:10 PM, Philip Bennefall phi...@blastbay.com wrote:
Yes, I have seen the backup API. But I would like to avoid the disk file
entirely and just serialize to and from memory.
Lateral thinking… write your db to tmpfs…
___
On Jun 5, 2013, at 9:25 PM, Philip Bennefall phi...@blastbay.com wrote:
Doesn't that still create a file, just a temporary one? I need the serialized
content in a char* or similar so I can memcpy it etc, and then feed it back
to SqLite at a later time. I guess I could make a toy vfs that
On Jun 5, 2013, at 9:38 PM, Philip Bennefall phi...@blastbay.com wrote:
I don't want it in a file, however. I want it in a memory block. So tmpfs
wouldn't do the trick from what I gather.
… tmpfs *is* memory… just looks like a file system…
http://en.wikipedia.org/wiki/Tmpfs
On Jun 5, 2013, at 9:44 PM, Philip Bennefall phi...@blastbay.com wrote:
I use Windows. This looks like it is purely for Unix variants?
I suspect one call these 'RAM disk/drive' as well...
http://en.wikipedia.org/wiki/List_of_RAM_drive_software
I need something that operates wherever SqLite
On Jun 5, 2013, at 10:02 PM, Philip Bennefall phi...@blastbay.com wrote:
That is exactly the sort of thing I am looking for. If anything, I think it'd
be great to have such a vfs in SqLite if only for
completeness/customizability, seeing as how there are so many different
allocators for
On May 22, 2013, at 8:58 PM, David de Regt dav...@mylollc.com wrote:
Back to the trenches to rearchitect this…
Perhaps an opportunity to introduce bitmap indexes to SQLite… which would
render compound indexes a thing of the past for certain class of problems such
as yours...
On May 17, 2013, at 10:54 AM, Konstantinos Alogariastos marau...@gmail.com
wrote:
Does this mean that one cannot use a index on two columns when in the query
both columns are used with IN?
You might want to read up on the query planner:
http://www.sqlite.org/queryplanner.html#searching
The
On May 18, 2013, at 3:13 AM, Keith Medcalf kmedc...@dessus.com wrote:
This applies *only* to the rowid (integer primary key). Other indexes (as in
CREATE INDEX) are always unique since the key always contains the rowid as
the final (unspoken) component. A unique index must be unique
On May 13, 2013, at 6:12 PM, Simon Slavin slav...@bigfraud.org wrote:
I should have asked you for (1,2,20) as well and we could see whether it
outputs '10' or '10.0'. But yes, it would appear that in Oracle, NUMERIC
means FLOAT.
Nah. Plus there is no such type as 'NUMERIC' per se in
On May 9, 2013, at 3:30 PM, Romulo Ceccon romulocec...@gmail.com wrote:
But my application is (so far) database agnostic
Reconsider. Agnosticism is not a feature. It's a bug.
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On Mar 26, 2013, at 10:36 PM, Paul Mathieu pmath...@intellimed.com wrote:
SELECT Sentences FROM T1 JOIN T2 ON T1.Sentences LIKE
CONCAT('%',T2.Terms,'%')
Alternatively, use FTS [1]:
sqlite create virtual table sentence using fts4( content text );
sqlite insert into sentence values( 'FTS3 and
On Mar 21, 2013, at 6:41 PM, Peter Haworth p...@lcsql.com wrote:
I found the code in the two attached files (are they allowed on this list?)
on the web a while back. The claim was that it created an information
schema database from an sqlite db. I know nothing about Lua but I managed
to
On Mar 24, 2013, at 4:13 PM, Simon Slavin slav...@bigfraud.org wrote:
SELECT playerid FROM players WHERE playerid IS NOT IN (SELECT playerid FROM
draftedplayers)
Alternatively:
select playerid
fromplayers
where not exists
(
select 1
from
On Mar 24, 2013, at 8:30 PM, Larry Brasfield larry_brasfi...@iinet.com wrote:
That said… it seems to be odd to have a 'player' vs . 'draftedplayers'
table… looks like a typical is_a vs has_a confusion...
The table named 'draftedplayers' is simply a many-to-many relation between
the
On Mar 20, 2013, at 6:53 PM, Jay A. Kreibich j...@kreibi.ch wrote:
If there is any change I'd like to see, it is that all the PRAGMAs
that return tabular data should really be system catalog tables.
Triple hurray for that! SQLite deserves a proper data dictionary, no question
asked.
What
On Mar 19, 2013, at 11:25 PM, Richard Hipp d...@sqlite.org wrote:
Try static linking. Example of how to build a shell that contains spellfix1:
For the record, aside from being a great little SQL engine, gems like FTS and
spellfix are really what make SQLite truly outstanding. Thanks for that
On Mar 20, 2013, at 11:19 PM, Simon Slavin slav...@bigfraud.org wrote:
What on earth is spellfix ? I don't remember having heard of it before.
googling doesn't seem to turn up any page which says This is what spellfix
is..
http://www.sqlite.org/draft/spellfix1.html
On Mar 19, 2013, at 1:33 PM, D. Richard Hipp d...@hwaci.com wrote:
http://www.sqlite.org/releaselog/3_7_16.html
• Enhance the spellfix1 extension so that the edit distance cost table can be
changed at runtime by inserting a string like 'edit_cost_table=TABLE' into the
command field.
Is
On Mar 18, 2013, at 8:02 PM, Marco Bambini ma...@sqlabs.net wrote:
Anyone have another solution?
You may have better luck at cocoa-...@lists.apple.com .
In the meantime:
On Mar 11, 2013, at 4:54 PM, David Bicking dbic...@yahoo.com wrote:
Am I missing an obviously better way to do it?
A way that can easily be expanded when they come back to me and say if I
looked at a fifth column, you'd have been able to match it….
As they stand, your updates will always
On Mar 11, 2013, at 10:32 PM, David Bicking dbic...@yahoo.com wrote:
Um, I am wrong, cause I just tried it and sqlite only returns the level 5
result. I have no clue why!
The joins are setup from most specific to broadest. Each join is evaluated only
if the previous one returns null (i.e.
On Mar 7, 2013, at 6:21 AM, Nico Williams n...@cryptonector.com wrote:
In conclusion, if you want to allow affine type conversions on INSERT,
but not disallow values that cannot be so converted, then
CHECK(my_column = CAST(my_column AS TYPE)) works. And if you want
to disallow values of
On Mar 7, 2013, at 7:53 PM, Ryan Johnson ryan.john...@cs.utoronto.ca wrote:
Meanwhile, though, I'd be delighted if column affinity, cast(), implicit
conversions performed by arithmetic operations, check(), and triggers all
behaved the same way, with the current behavior of column affinity
On Mar 5, 2013, at 10:41 PM, Yuzem naujnit...@gmail.com wrote:
Hello, I have the following tables:
CREATE TABLE movies (movies,name);
CREATE TABLE genres (movies,genres);
IMDB?
Every movie has many genres and every genre has many movies.
I want to list all genres but those who match a
On Mar 6, 2013, at 10:24 PM, Nico Williams n...@cryptonector.com wrote:
CREATE TABLE toy(a INTEGER CHECK(a = CAST(a AS INTEGER)));
Any idea on the cost of such check? In term of overhead? Just curious.
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On Mar 6, 2013, at 10:24 PM, Nico Williams n...@cryptonector.com wrote:
Nah, use this sort of CHECK constraint:
CREATE TABLE toy(a INTEGER CHECK(a = CAST(a AS INTEGER)));
Hmmm… on second thought… is that an assignment in that check constraint?!? I.e.
are you reassigning a to a new cast
On Mar 6, 2013, at 10:43 PM, Petite Abeille petite.abei...@gmail.com wrote:
CREATE TABLE toy(a INTEGER CHECK(a = CAST(a AS INTEGER)));
Hmmm… on second thought… is that an assignment in that check constraint?!?
I.e. are you reassigning a to a new cast value?!?
Are not check constraint
On Mar 6, 2013, at 10:47 PM, Nico Williams n...@cryptonector.com wrote:
Hmmm… on second thought… is that an assignment in that check constraint?!?
I.e. are you reassigning a to a new cast value?!?
No. The only place where = is an assignment is in UPDATE statements,
in the SET clause.
On Mar 6, 2013, at 10:49 PM, Nico Williams n...@cryptonector.com wrote:
Ah, your confusion comes from the fact that type conversion still
happens when the INSERT gets around to making the record. The CHECK
constraint happens before the record is made. See the vdbe that gets
generated.
All
On Mar 6, 2013, at 11:53 PM, Nico Williams n...@cryptonector.com wrote:
o k i d o k i . . .
Oh. Oh.. Ew.. Never mind then!
Yeah… a bit of a mind melt… nevertheless… such check should work as advertised…
even handles nulls properly… perhaps too clever too... :D
All magic comes with a
On Mar 5, 2013, at 8:19 AM, James K. Lowden jklow...@schemamania.org wrote:
Postgresql has also had them for a while.
Yes, and if I'm not mistaken Ingres's QUEL had them long before that.
Yes, many databases have them, from Postgres, MSSQL, Sybase IQ, some flavor of
DB2, to Oracle, etc,
On Mar 5, 2013, at 9:24 AM, Nico Williams n...@cryptonector.com wrote:
+1 re: recursive queries.
There is a standard for that (in ANSI SQL-99?): recursive 'with' clause, aka
recursive subquery factoring, aka recursive common table expressions.
On Mar 4, 2013, at 1:32 AM, James K. Lowden jklow...@schemamania.org wrote:
What do you have in mind? I've benn adding some user defined functions
and am thinking of creating a repository for them.
All the so-called window functions from SQL:2003 (aka analytic functions):
Windowed Tables
On Mar 3, 2013, at 2:10 PM, James K. Lowden jklow...@schemamania.org wrote:
There's some cruft, too. I was only demonstrating that it could be
done. If you find a way to simplify it, you'll know you understand
it.
Ah… if only… SQLite had analytical functions… oh, well..
On Feb 27, 2013, at 2:53 PM, James K. Lowden jklow...@schemamania.org wrote:
On Mon, 25 Feb 2013 23:54:23 +0100
anydacdev anydacdev anydac...@gmail.com wrote:
I was wondering what is SQLite's equivalent to:
MERGE INTO x TGT
USING (SELECT NAME, KEY FROM y) SRC
ON (TGT.key = SRC.key)
On Feb 25, 2013, at 11:54 PM, anydacdev anydacdev anydac...@gmail.com wrote:
I was wondering what is SQLite's equivalent to:
MERGE INTO x TGT
There is none. Even though it's standard SQL (SQL:2003 or such), this is not
supported by SQLite in any way, shape, or form.
One could make do with
On Feb 23, 2013, at 12:07 AM, Paul Sanderson sandersonforens...@gmail.com
wrote:
any ideas?
As mentioned, you will need two queries and union their respective result sets.
For example, assuming the following data set:
create table test( key, value );
insert
intotest
( key,
On Feb 22, 2013, at 9:51 PM, Didier Morandi didier.mora...@gmail.com wrote:
set flame off.
You seem to be missing the point entirely. No one mentioned anything about OOP
at all, whatever that is. Merely that you may be better off using a more
contemporary version of SQLite. That's all.
On Feb 20, 2013, at 2:15 PM, Richard Hipp d...@sqlite.org wrote:
SQLite automatically adds a LIMIT 1 to a scalar subquery.
Yeah… that's a bit of a death trap though… would be much more productive if
SQLite would raise an exception instead of doing something covert and random...
On Feb 20, 2013, at 9:29 PM, Richard Hipp d...@sqlite.org wrote:
On Wed, Feb 20, 2013 at 3:25 PM, Petite Abeille
petite.abei...@gmail.comwrote:
On Feb 20, 2013, at 2:15 PM, Richard Hipp d...@sqlite.org wrote:
SQLite automatically adds a LIMIT 1 to a scalar subquery.
Yeah… that's
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