I don't think the OP really cares about linking SQLite to a spreadsheet.
If I'm reading him correctly, he's just looking for an easy way to
populate SQLite database tables using a simple GUI he doesn't have to
develop himself, and doesn't have to pay a lot of money for. In other
words, he wants
On 11/30/12 8:34 AM, Simon Slavin slav...@bigfraud.org wrote:
On 30 Nov 2012, at 3:50pm, Staffan Tylen staffan.ty...@gmail.com wrote:
I'm looking for both administrative and technical advice on the pros and
cons of either creating one single database table with many columns or
creating
Thanks, Julian; we'll see.
I'm not married to JDBC; an SQLite API wrapper might suit me down to the
ground. I'm not doing general SQL database stuff, but we've done quite a
lot with SQLite in the past, and I'd like to retain it in my toolkit. In
any event I'm using Java 1.7; it's a little
Howdy!
What driver are people using to access SQLite databases from Java applications?
Will
--
Will Duquette -- william.h.duque...@jpl.nasa.gov
Athena Development Lead -- Jet Propulsion Laboratory
It's amazing what you can do with the right tools.
___
On 10/22/12 1:44 PM, Guillaume Saumure gsaumur...@videotron.ca wrote:
Le 2012-10-22 15:35, Paul van Helden a écrit :
It would be possible to implement TRUNCATE TABLE on top of that, but
this would be only syntactic sugar.
..or better portability. TRUNCATE TABLE works (since only a few years)
On 10/4/12 7:29 AM, David Richardson daviric...@yahoo.com wrote:
I¹m having some sort of
bug with system.data.sqlite. I¹ve been trying for weeks now! I¹ve
installed (System.Data.SQLite 1.0.81.0) and
i¹m using sqlite in combination with Entity Framework 4. Mostly it does
what I
want. The only
, and
the cascading deletes in the schema all take place as expected.
However, I'm not using Entity Framework 4 or anything like it; there's
evidently something else going on.
Will
From: Duquette, William H (318K)
william.h.duque...@jpl.nasa.govmailto:william.h.duque
On 10/3/12 4:20 AM, Richard Hipp d...@sqlite.org wrote:
On Tue, Oct 2, 2012 at 5:12 PM, Duquette, William H (318K)
william.h.duque...@jpl.nasa.gov wrote:
Howdy!
The SQLite3 Tcl interface has a nullvalue command, which determines
how
NULLs are represented as Tcl values. If you do a query
On 10/1/12 1:32 PM, Duquette, William H (318K)
william.h.duque...@jpl.nasa.gov wrote:
Howdy!
I have some code that does the following:
1. Takes a snapshot of some number of database tables, e.g., saves the
data from those tables as a text string.
2. Later, clears the tables and restores
Howdy!
The SQLite3 Tcl interface has a nullvalue command, which determines how NULLs
are represented as Tcl values. If you do a query on a NULL value, you get the
nullvalue value. (nullvalue defaults to the empty string.)
However, if a NULL value is passed to a custom SQL function, defined
Howdy!
I have some code that does the following:
1. Takes a snapshot of some number of database tables, e.g., saves the data
from those tables as a text string.
2. Later, clears the tables and restores their content from the snapshot.
The snapshot is restored by creating a new INSERT statement
[sqlite-users-boun...@sqlite.org]
on behalf of Duquette, William H (318K) [william.h.duque...@jpl.nasa.gov]
Sent: Monday, October 01, 2012 3:32 PM
To: Discussion of SQLite Database
Subject: EXT :[sqlite] Problem with Foreign Key constraints
Howdy!
I have some code that does the following:
1. Takes
I have a database with two tables, one of which depends on the other:
CREATE TABLE a(
a_id INTEGER PRIMARY KEY
b_id INTEGER);
CREATE TABLE c(
b_id INTEGER,
num INTEGER,
flag INTEGER,
PRIMARY KEY (b_id,num));
In words, each a
= c.b_id AND c.flag = 1
GROUP BY a_id
With count(*) it's counting the rows with a non-null a_id. With
count(num), it's counting the rows with a non-null num, which is what
I want.
Thanks, this was extremely helpful!
Will
On Thu, Jun 14, 2012 at 2:00 PM, Duquette, William H (318K)
william.h.duque
On 6/14/12 1:00 PM, Igor Tandetnik itandet...@mvps.org wrote:
On 6/14/2012 2:00 PM, Duquette, William H (318K) wrote:
What I want to do is find a_id's for which c contains no rows with the
matching b_id in which the flag column is 1.
Why don't you just say that?
select a_id from a
where b_id
On 5/8/12 1:51 PM, Tilsley, Jerry M. jmtils...@st-claire.org wrote:
This is probably a newbie question so please bear with me. I'm accessing
a SQLite database through TCL and periodically I get a Database Locked
error. This is a multi-thread process that writes to the DB, do I need
to enable
Howdy!
Suppose I have two related tables, t1 and t2, and I write a view like this:
CREATE VIEW myview AS SELECT * FROM t1 JOIN t2 USING (some_column);
If I am querying data just from t1, is there a performance penalty for using
myview in the query? Or will the query planner generate
On 3/2/12 8:29 AM, Igor Tandetnik itandet...@mvps.org wrote:
On 3/2/2012 11:29 AM, Pavel Ivanov wrote:
If I am querying data just from t1, is there a performance penalty
for using myview in the query? Or will the query planner generate
approximately the same bytecode as it would if I'd
On 3/2/12 8:31 AM, Simon Davies simon.james.dav...@gmail.com wrote:
On 2 March 2012 16:23, Duquette, William H (318K)
william.h.duque...@jpl.nasa.gov wrote:
Howdy!
Suppose I have two related tables, t1 and t2, and I write a view like
this:
CREATE VIEW myview AS SELECT * FROM t1 JOIN t2
On 1/26/12 9:36 AM, Stephan Beal sgb...@googlemail.com wrote:
On Thu, Jan 26, 2012 at 2:53 PM, Mohit Sindhwani m...@onghu.com wrote:
Absolutely! I come home from work and tune in to this thread, gripped
:)
+1 to Mohit and the others who's written similar responses. i rarely
follow
threads
On 11/2/11 10:01 PM, Dan Kennedy danielk1...@gmail.com wrote:
On 11/03/2011 01:11 AM, Duquette, William H (318K) wrote:
I'm pretty sure I know the answer to this.
Sqlite3 allows you to define a progress callback, which will be
called every so many byte-code instructions during a long-running
I'm pretty sure I know the answer to this.
Sqlite3 allows you to define a progress callback, which will be called every
so many byte-code instructions during a long-running query, so that you can
update a progress bar or like that.
I'm assuming that querying the same database using the same
I believe that SQLite3 is being hosted using Fossil now, rather than
cvstrac; and I don't see a Wiki link on the main SQLite page.
At a guess, the old Wiki pages have been migrated to Fossil, but can now
only be edited by the SQLite developers. If there are links to the old
wiki anywhere, they
What if you defined the foreign key with ON DELETE CASCADE? Dropping
the employer table will delete the employees.
Will
--
Will Duquette -- william.h.duque...@jpl.nasa.gov
Athena Development Lead -- Jet Propulsion Laboratory
It's amazing what you can do with the right tools.
On 8/19/11 6:56
On 8/19/11 10:18 AM, Boris Kolpackov bo...@codesynthesis.com wrote:
Hi William,
Duquette, William H (318K) william.h.duque...@jpl.nasa.gov writes:
What if you defined the foreign key with ON DELETE CASCADE? Dropping
the employer table will delete the employees.
That would be bad
On 8/19/11 10:44 AM, Boris Kolpackov bo...@codesynthesis.com wrote:
Hi William,
Duquette, William H (318K) william.h.duque...@jpl.nasa.gov writes:
On 8/19/11 10:18 AM, Boris Kolpackov bo...@codesynthesis.com wrote:
There's something odd here. You have the FK constraints deferred, and
your
On 7/20/11 8:27 AM, Simon Slavin slav...@bigfraud.org wrote:
On 20 Jul 2011, at 4:21pm, KeithB wrote:
I'd like to create a temporary table to shadow one of my persistent
tables. It will have the same columns and hold override values that,
when present, take precedence over the real values.
On 4/7/11 4:37 PM, Jay A. Kreibich j...@kreibi.ch wrote:
On Thu, Apr 07, 2011 at 03:45:18PM -0700, Duquette, William H (318K)
scratched on the wall:
Hmmm. I tried this; but this constraint fails for ANY value I give it.
I tried this:
CHECK (0.0 = CAST (value AS real
Howdy!
I have a database with tables defined like this:
CREATE TABLE table1 (
idINTEGER PRIMARY KEY,
value REAL DEFAULT 1.0 CHECK (0.0 = value)
);
CREATE TABLE table2 (
idINTEGER PRIMARY KEY,
value REAL DEFAULT 1.0 CHECK (0.0 = value AND value = 1.0)
);
The following
On 4/7/11 2:52 PM, Jay A. Kreibich j...@kreibi.ch wrote:
On Thu, Apr 07, 2011 at 02:44:49PM -0700, Duquette, William H (318K)
scratched on the wall:
Howdy!
I have a database with tables defined like this:
CREATE TABLE table1 (
idINTEGER PRIMARY KEY,
value REAL DEFAULT 1.0
On 4/7/11 2:52 PM, Jay A. Kreibich j...@kreibi.ch wrote:
On Thu, Apr 07, 2011 at 02:44:49PM -0700, Duquette, William H (318K)
scratched on the wall:
Howdy!
I have a database with tables defined like this:
CREATE TABLE table1 (
idINTEGER PRIMARY KEY,
value REAL DEFAULT 1.0
Assuming that higher rowids really are later rowids, wouldn't adding ORDER BY
rowid DESC and LIMIT 5000 do the job?
Will
On 3/14/11 10:58 AM, Ian Hardingham i...@omroth.com wrote:
Ah, sorry about this - my query is this one:
SELECT * FROM multiturnTable WHERE rowid in (SELECT rowid FROM
Howdy!
In SQLite 3.7.4/3.7.5, does WAL seem to be stable enough for production use?
And then, an architecture question. I have an app that occasionally needs to
do significant background processing. I'd like to keep the GUI awake and
looking at the current data set while the app is computing
Thanks, Richard!
Will
On 2/2/11 8:22 AM, Richard Hipp d...@sqlite.org wrote:
On Wed, Feb 2, 2011 at 11:14 AM, Duquette, William H (318K)
william.h.duque...@jpl.nasa.gov wrote:
Howdy!
In SQLite 3.7.4/3.7.5, does WAL seem to be stable enough for production
use?
Mass-market consumer
On 2/2/11 11:48 AM, Bert Nelsen bert.nel...@googlemail.com wrote:
Because I felt so stupid about these mostly empty columns taking so much
space, I tended to replace all the phone columns by a single column named
customerPhone.
I stored the values into customerPhone like that:
Being one who speaks good English, has a logical mind, and has previously
programmed in C, AND who had used SQLite for around five years on the strength
of that, I still found the book useful when I read it a couple of months ago.
I already knew the basics, but it shed light on a few obscure
A question on using randomblob(16) to generate UUIDs, as the SQLite docs
suggest: what assurance do you have that the UUID really is universally unique?
It's a pseudo-random number, and you can replicate a stream of pseudo-random
numbers by setting the seed appropriately. Is randomblob()
On 1/24/11 8:29 AM, Richard Hipp d...@sqlite.org wrote:
On Mon, Jan 24, 2011 at 11:21 AM, Duquette, William H (318K)
william.h.duque...@jpl.nasa.gov wrote:
A question on using randomblob(16) to generate UUIDs, as the SQLite docs
suggest: what assurance do you have that the UUID really
On 1/24/11 8:36 AM, Simon Slavin slav...@bigfraud.org wrote:
On 24 Jan 2011, at 4:21pm, Duquette, William H (318K) wrote:
A question on using randomblob(16) to generate UUIDs, as the SQLite docs
suggest: what assurance do you have that the UUID really is universally
unique? It's a pseudo
I've just discovered that a REPLACE can trigger a
cascading delete. Is this expected behavior?
I have an undo scheme where I grab entire rows from the
database before they are changed; then, on undo I
simply put the rows back using INSERT OR REPLACE.
My assumption was that doing a REPLACE was
Richard,
I was afraid you were going to tell me that; it makes all
too much sense, once I thought about.
Thanks for the definitive word.
Will
On 1/12/11 2:08 PM, Richard Hipp d...@sqlite.org wrote:
On Wed, Jan 12, 2011 at 4:54 PM, Duquette, William H (318K)
william.h.duque...@jpl.nasa.gov
If I define a custom SQL function in Tcl using the SQLite $db function
command, is there any way to make the function return NULL? I'm guessing not.
Thanks!
--
Will Duquette -- william.h.duque...@jpl.nasa.gov
Athena Development Lead -- Jet Propulsion Laboratory
It's amazing what you can do
On 12/22/10 10:35 AM, Richard Hipp d...@sqlite.org wrote:
On Wed, Dec 22, 2010 at 1:16 PM, Duquette, William H (318K)
william.h.duque...@jpl.nasa.gov wrote:
If I define a custom SQL function in Tcl using the SQLite $db function
command, is there any way to make the function return NULL? I'm
On 12/22/10 10:52 AM, Simon Slavin slav...@bigfraud.org wrote:
There is no way to get a Tcl function to return NULL, since TCL has no
concept of NULL. So, no, sadly, you cannot get an SQLite function
implemented in Tcl to return NULL.
... but you might find reading this useful:
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