Hi there,
Just because I'm interested, I'm wondering if you can identify your
hardware, and how long it takes your system to do your desired operation on
such a large number of records.
Do let us know which option you performed the query with as well.
P.S. For best results, I'd recommend using t
On Tue, Sep 26, 2017 at 01:37:42PM -0700, Jens Alfke wrote:
> > On Sep 26, 2017, at 1:17 PM, Guy Harris wrote:
> > A user wouldn't know what to do with "you've exceeded your stored data
> > quota”?
>
> A Turkish or Chinese user likely wouldn’t. (SQLite’s error messages
> are not localized.) And
> On Sep 26, 2017, at 3:17 PM, Guy Harris wrote:
>
> It shows a whole bunch of codes, none of which are "something that
> distinguishes EIO from other errors such as EFBIG, EDQUOT, etc.".
>
> I'm not asking for something that indicates what xXYZZY method reported the
> error. I'm asking for
Hi, ALL,
I believe the creation a foreign key on the existing tables is not supported
on SQLite.
However, I can issue a series of the SQL command which will emulate
the creation of foreign key.
1. BEGIN
2. CREATE TEMPORARY TABLE temp AS SELECT * FROM ;
3. DROP TABLE ;
4. CREATE TABLE (, FOREIGN K
On Sep 26, 2017, at 3:11 PM, Simon Slavin wrote:
> On 26 Sep 2017, at 10:53pm, Guy Harris wrote:
>>
>> I *would* suggests an additional API to get a *separate* extended error
>> code, so that if, for example, a write() fails and that failure is turned
>> into SQLITE_IOERR, you can get somethi
On 26 Sep 2017, at 10:53pm, Guy Harris wrote:
>
> I *would* suggests an additional API to get a *separate* extended error code,
> so that if, for example, a write() fails and that failure is turned into
> SQLITE_IOERR, you can get something that distinguishes EIO from other errors
> such as
😊
Than you!
-Original Message-
From: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On
Behalf Of Stephen Chrzanowski
Sent: Tuesday, September 26, 2017 4:31 PM
To: SQLite mailing list
Subject: Re: [sqlite] Is there a way to perform a muti-level sort and extract
of la
On Sep 26, 2017, at 2:22 PM, Jens Alfke wrote:
>> On Sep 26, 2017, at 1:57 PM, Guy Harris wrote:
>>
>> Which means "for stuff that would be shown to the user, for the user to
>> read, either localize your error messages, or make sure your API returns
>> error codes that the application can tu
On Sep 26, 2017, at 2:08 PM, Scott Robison wrote:
> There are physical errors and there are logical errors. If an error is
> generated from write, it's not unreasonable to classify it as an
> "output error". From read as an "input error".
"Output error", yes, although it'd be useful to provide m
On Sep 26, 2017, at 2:16 PM, Simon Slavin wrote:
> On 26 Sep 2017, at 9:57pm, Guy Harris wrote:
>
>> On Sep 26, 2017, at 1:37 PM, Jens Alfke wrote:
>>
On Sep 26, 2017, at 1:17 PM, Guy Harris wrote:
A user wouldn't know what to do with "you've exceeded your stored data
q
> On Sep 26, 2017, at 1:57 PM, Guy Harris wrote:
>
> Which means "for stuff that would be shown to the user, for the user to read,
> either localize your error messages, or make sure your API returns error
> codes that the application can turn into localized error messages".
Um, that’s what
On Sep 26, 2017, at 1:43 PM, Simon Slavin wrote:
> On 26 Sep 2017, at 9:17pm, Guy Harris wrote:
>
>> The *number* might annoy the support staff; right off the top of your head,
>> what's the error number for "file system quota exceeded" or "I/O error"?
>> (No cheating by looking it up in a m
On 26 Sep 2017, at 9:57pm, Guy Harris wrote:
> On Sep 26, 2017, at 1:37 PM, Jens Alfke wrote:
>
>>> On Sep 26, 2017, at 1:17 PM, Guy Harris wrote:
>>>
>>> A user wouldn't know what to do with "you've exceeded your stored data
>>> quota”?
>>
>> A Turkish or Chinese user likely wouldn’t. (S
There are physical errors and there are logical errors. If an error is
generated from write, it's not unreasonable to classify it as an
"output error". From read as an "input error".
There is a lot of sqlite source code that already exists and has been
written to work with the current interface. T
On Sep 26, 2017, at 1:37 PM, Jens Alfke wrote:
>> On Sep 26, 2017, at 1:17 PM, Guy Harris wrote:
>>
>> A user wouldn't know what to do with "you've exceeded your stored data
>> quota”?
>
> A Turkish or Chinese user likely wouldn’t. (SQLite’s error messages are not
> localized.)
Which means
On 26 Sep 2017, at 9:17pm, Guy Harris wrote:
> The *number* might annoy the support staff; right off the top of your head,
> what's the error number for "file system quota exceeded" or "I/O error"? (No
> cheating by looking it up in a man page or include file!)
My support staff are allowed
> On Sep 26, 2017, at 1:17 PM, Guy Harris wrote:
>
> A user wouldn't know what to do with "you've exceeded your stored data quota”?
A Turkish or Chinese user likely wouldn’t. (SQLite’s error messages are not
localized.) And there are plenty of messages that are much less understandable
to a
uh.. UNIQUE... DISTINCT... ,
On Tue, Sep 26, 2017 at 4:30 PM, Stephen Chrzanowski
wrote:
>
>
> On Tue, Sep 26, 2017 at 1:36 PM, Simon Slavin
> wrote:
>
>>
>>
>> My one concern in reading your post is how your dates are formatted.
>> When putting your date fields into your SQL table you will hav
On Tue, Sep 26, 2017 at 1:36 PM, Simon Slavin wrote:
>
>
> My one concern in reading your post is how your dates are formatted. When
> putting your date fields into your SQL table you will have to ensure that
> dates are saved as a day number, or as text which naturally sorts into date
> order,
On Sep 26, 2017, at 1:05 PM, Simon Slavin wrote:
> On 26 Sep 2017, at 8:47pm, Guy Harris wrote:
>
>> On Sep 26, 2017, at 8:22 AM, Jens Alfke wrote:
>>
>>> The basic error code is SQLITE_IOERR, which just means "Some kind of disk
>>> I/O error occurred” according to the comment. Which is true
On 26 Sep 2017, at 8:47pm, Guy Harris wrote:
> On Sep 26, 2017, at 8:22 AM, Jens Alfke wrote:
>
>> The basic error code is SQLITE_IOERR, which just means "Some kind of disk
>> I/O error occurred” according to the comment. Which is true in this case; an
>> I/O operation returned an error.
>
That is exactly what I want to do
-Original Message-
From: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On
Behalf Of Keith Medcalf
Sent: Tuesday, September 26, 2017 3:04 PM
To: SQLite mailing list
Subject: Re: [sqlite] Is there a way to perform a muti-level sort
Thank you very much!
I will research the two suggestions below.
As for your sort assumption, you are correct.
A A 1 2
A A 2 1
A B 1 2
A B 1 3
A C 1 1
-Original Message-
From: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On
Behalf Of Warren Young
S
Thank you so much - I will test this as soon as I get home!
-Original Message-
From: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On
Behalf Of Simon Slavin
Sent: Tuesday, September 26, 2017 1:37 PM
To: SQLite mailing list
Subject: Re: [sqlite] Is there a way to perf
On Sep 26, 2017, at 8:22 AM, Jens Alfke wrote:
> The basic error code is SQLITE_IOERR, which just means "Some kind of disk I/O
> error occurred” according to the comment. Which is true in this case; an I/O
> operation returned an error.
But the *disk* didn't - the *operating system* did, so if
SELECT DISTINCT * FROM table ORDER BY field1,field2,field3,field4 DESC,field5;
to do the whole sorting and de-duplication in one step ... assuming you want to
report duplicate entire rows only once ...
---
The fact that there's a Highway to Hell but only a Stairway to Heaven says a
lot about
On Sep 26, 2017, at 11:24 AM, Ron Barnes wrote:
>
> I have approximately 600 million records that need to be sorted
Where is the data now?
> There are 18 table entries.
You mean 18 columns per row, right?
> I also need to deduplicate the records based upon the sorted output file.
You speak o
On 26 Sep 2017, at 6:24pm, Ron Barnes wrote:
> I need to sort them as follows...
>
> Sort Field 1 Ascending
> Sort Field 2 Ascending WITHIN field 1
> Sort Field 3 Ascending WITHIN field 2 WITHIN field 1
> Sort Field 4 Descending WITHIN field 3 WITHIN field 2 WITHIN field 1 <== This
> is a Dat
Hello All,
I have approximately 600 million records that need to be sorted and then
extracted to a flat file. I am unable to code a solution using visual Basic
.NET. It was suggested to me that a DB engine could perform my task for me.
Is there a way to accomplish this using the multi-level s
> On Sep 25, 2017, at 4:39 AM, KRECKEL Richard (AREVA)
> wrote:
>
> Remove the write permission of a SQLite database's journal file. Then, try
> write-accessing the database. The error reported is "disk I/O error". (This
> happened to me when two user tried to share a DB and had their umask
> On 26 Sep 2017, at 12:14 am, Clemens Ladisch wrote:
>
> Roberts, Barry (FINTL) wrote:
>> As per my original post, all C# access code is making extensive use of
>> "using" statements. However we do obviously rely on the connection pool
>> being thread safe, because many threads are writing to
The terminology for that option has always caught me out. The best phrase is
the one below.
http://www.sqlite.org/compile.html#threadsafe
"When compiled with SQLITE_THREADSAFE=2, SQLite can be used in a multithreaded
program so long as no two threads attempt to use the same database connection
(
Web App you say
I imagine you are using some wrapper, possibly a JAVA one, PHP or a
PEARL one, I think your web service may have updated so the supported
wrapper updated with possibly a new default setting or such. Those
wrappers usually have a setting/property called "AutoCommit" which
/
Are the changes actually making it to the file on disk ? In other words, if
you do _open(), INSERT, _close(), does the disk file get updated ?
What PRAGMAs are you using ?
Simon.
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On 9/24/17, bensonbear wrote:
>
> But today, I found that a sequence of actions done in one function with one
> database connection/cursor will not work because the later ones do not see
> the changes of the earlier ones. Is my understanding correct that as long
> as it is the same connection/cu
Remove the write permission of a SQLite database's journal file. Then, try
write-accessing the database. The error reported is "disk I/O error". (This
happened to me when two user tried to share a DB and had their umask set wrong.)
The error message reported by SQLite is inappropriate. A "perm
I don't think so:
https://sqlite.org/threadsafe.html
"With -DSQLITE_THREADSAFE=2 the threading mode is multi-thread." Setting it
to 0 disables all mutexes (assumes single threaded)
So I've set it to be multi-threaded.
Okay so I've wrapped @synchronized(..) around my database usage, stopped
cach
I have an sqlite3 database I use for a web app that I am mostly the sole user
of.
It has been working fine for years, but all of a sudden today, I find that
the app cannot insert and delete items from the database when it needs to.
This is an app with a single thread, and for each command the w
Roberts, Barry (FINTL) wrote:
> As per my original post, all C# access code is making extensive use of
> "using" statements. However we do obviously rely on the connection pool
> being thread safe, because many threads are writing to different
> databases (connections) concurrently.
>
> There is no
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