al Message
From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
To: sqlite-users@sqlite.org
Sent: Monday, October 23, 2006 7:08:56 AM
Subject: Re: [sqlite] Extra functions - New Project?
Mikey C <[EMAIL PROTECTED]> wrote:
>
> I sent the source code to DRH with the
I entirely agree. I had the functions coded because I needed them for my own
project. I never intended to do the other 85% of the work required to make
them a supported part of SQLite.
drh wrote:
>
> Mikey C <[EMAIL PROTECTED]> wrote:
>>
>> I sent the source code to DRH with the extra
Mikey C <[EMAIL PROTECTED]> wrote:
>
> I sent the source code to DRH with the extra functions. I don't myself have
> the time now to incorporate the extra functions into SQLite.
>
Writing code a chunk of code is only a small fraction of
the work needed to support the code in a maintained
Hi Rohit.
I sent the source code to DRH with the extra functions. I don't myself have
the time now to incorporate the extra functions into SQLite.
I don't know if DRH plans to add the extra functions. If he does not and he
doesn't mind, I am happy to send the source code to anyone that is
Mike
When are you planning to put code of your SQL functions for SQLite ?
Waiting...eagerly...
I may try to use it in my app.
Thanks
Rohit
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Cool,
I all ready have the code for a library of functions working with SQLite
V3.3.5 source.
This has been integrated into the SQLite code at compile time using
conditional compilation.
Math functions:
acos
asin
atan
atn2
atan2
acosh
asinh
atanh
degrees
radians
cos
sin
tan
cot
cosh
sinh
Mikey C <[EMAIL PROTECTED]> wrote:
>
> I am in need of some new SQL functions and wanted to ask advice on the best
> way to integrate these functions into SQLite 3.
>
See http://www.sqlite.org/cvstrac/wiki?p=LoadableExtensions
This is still a work in progress...
--
D. Richard Hipp <[EMAIL
There is one from MySQL I use a lot:
MD5()
Which comes from this collection:
http://dev.mysql.com/doc/refman/5.0/en/encryption-functions.html
Very useful for implementing Transparent Databases
Mikey C wrote:
These are the functions that I tend to have implemented:
Numeric Functions:
Mikey C wrote:
StdDev
Variance
When implementing these, make sure *not* to use the "textbook" one-pass
formula (mean of the squares - square of the mean); it simply doesn't
work properly in floating point (you can find yourself subtracting one
large number from another and losing most of
I tend to use SQLLite via the command line, feeding in queries from
an external file.
A non-standard SQL function I like, and don't think I've seen
anywhere but an Aspentech product is SUBSTRING.
It works in two ways
1 - Delimited
strFoo = 'abcd efgh';
substring(1 of strFoo between ' ')
These are the functions that I tend to have implemented:
Numeric Functions:
Sqrt
Floor
Ceiling
Sign
Pi - constant function 3.141..
ACos
ASin
ATan
Atn2
Cos
Cot
Degrees
Exp
Log
Log10
Power
Radians
Sin
Square
Tan
String Functions:
Charindex
Patindex
Left
Right
LTrim
RTrim
Trim
Replicate
Good idea. I can help with code and ideas. Contact me at
[EMAIL PROTECTED]
Mikey C wrote:
With some assistance I intend to implement pretty much all the SQL Server
2000 arithmetic and string functions into SQLite 3 codebase as well as a few
others, such as aggregates for StdDev and Variance.
With some assistance I intend to implement pretty much all the SQL Server
2000 arithmetic and string functions into SQLite 3 codebase as well as a few
others, such as aggregates for StdDev and Variance.
I will then release the source under the same license as SQLite itself.
If anyone has any
John Stanton wrote:
Jay Sprenkle wrote:
On 5/24/06, John Stanton <[EMAIL PROTECTED]> wrote:
> IIRC, That has been suggested in the past, the consensus was to not
> include extra functions, in keeping with the 'lite' in the project
> name.
A very sound decision. Bloat is the enemy of all
Jay Sprenkle wrote:
On 5/24/06, John Stanton <[EMAIL PROTECTED]> wrote:
> IIRC, That has been suggested in the past, the consensus was to not
> include extra functions, in keeping with the 'lite' in the project
> name.
A very sound decision. Bloat is the enemy of all good software.
A
On 5/24/06, John Stanton <[EMAIL PROTECTED]> wrote:
> IIRC, That has been suggested in the past, the consensus was to not
> include extra functions, in keeping with the 'lite' in the project
> name.
A very sound decision. Bloat is the enemy of all good software.
A conditional compile point
Jay Sprenkle wrote:
On 5/24/06, John Stanton <[EMAIL PROTECTED]> wrote:
Repeatedly installing a set of functions is not a good approach unless
the application is persistent. A particularly bad case is a very common
one, opening and closing an Sqlite DB in response to WWW requests. Much
Jay Sprenkle wrote:
On 5/24/06, John Stanton <[EMAIL PROTECTED]> wrote:
A simple way to do that would be to have a conditional compile built
into the function tables in func.c so that user written modules could be
conditionally compiled in. A quick glance at the code suggests that two
Roberto wrote:
On 24/05/06, Christian Smith <[EMAIL PROTECTED]> wrote:
Attach a patch to the ticket that implements your new functions. Send
your
declaration of dedication of the code to the public domain to the list,
and hope DRH includes the patch in the next release.
IIRC, That has been
On 5/24/06, John Stanton <[EMAIL PROTECTED]> wrote:
Repeatedly installing a set of functions is not a good approach unless
the application is persistent. A particularly bad case is a very common
one, opening and closing an Sqlite DB in response to WWW requests. Much
better that the functions
Mikey, I think that you are on the right track and placing your code in
the right place.
I probably have the core of many of the functions you want, all coded in
ANSI C which fits straight into Sqlite. The conditional compile
approach would work very well and efficiently, applying no
We added some date functions into Sqlite, and it was a trivial exercise
because the function interface is tidy and easy to figure out.
What would be elegant is to have an ability to compile user written
functions into new versions of Sqlite without having to modify the
source of the new
Roberto-10 wrote:
>
> On 24/05/06, Christian Smith <[EMAIL PROTECTED]> wrote:
>> Attach a patch to the ticket that implements your new functions. Send
>> your
>> declaration of dedication of the code to the public domain to the list,
>> and hope DRH includes the patch in the next release.
>
>
On 24/05/06, Christian Smith <[EMAIL PROTECTED]> wrote:
Attach a patch to the ticket that implements your new functions. Send your
declaration of dedication of the code to the public domain to the list,
and hope DRH includes the patch in the next release.
IIRC, That has been suggested in the
On Wed, 24 May 2006, Mikey C wrote:
I would rather add these functions directly to the core SQLite DLL in C in
and compile them directly into the code (using a conditional).
They then register this function by adding it to the array of existing
functions:
...
This seems to work (I've tried
On 5/24/06, Robert Simpson <[EMAIL PROTECTED]> wrote:
- Original Message -
From: "Jay Sprenkle" <[EMAIL PROTECTED]>
To: <sqlite-users@sqlite.org>
Sent: Wednesday, May 24, 2006 7:17 AM
Subject: Re: [sqlite] Extra functions - New Project?
>Flip that aroun
- Original Message -
From: "Robert Simpson" <[EMAIL PROTECTED]>
To: <sqlite-users@sqlite.org>
Sent: Wednesday, May 24, 2006 7:32 AM
Subject: Re: [sqlite] Extra functions - New Project?
Here's the easiest way I can think of:
Add one more exported func
- Original Message -
From: "Mikey C" <[EMAIL PROTECTED]>
To: <sqlite-users@sqlite.org>
Sent: Wednesday, May 24, 2006 7:25 AM
Subject: Re: [sqlite] Extra functions - New Project?
[snip]
This seems to work (I've tried it).
HOWEVER, it means altering func.c and
- Original Message -
From: "Jay Sprenkle" <[EMAIL PROTECTED]>
To: <sqlite-users@sqlite.org>
Sent: Wednesday, May 24, 2006 7:17 AM
Subject: Re: [sqlite] Extra functions - New Project?
Flip that around and it's easier.
Write a dll that loads finisar then registers
I would rather add these functions directly to the core SQLite DLL in C in
and compile them directly into the code (using a conditional).
For example on the web I found an example of adding a sign() function:
/*
** Implementation of the sign() function
*/
static void signFunc(sqlite3_context
On 5/24/06, Robert Simpson <[EMAIL PROTECTED]> wrote:
Actually your only option using Finisar (aside from recompiling sqlite) is
to write all the functions in C/C++ in a separate DLL, and then modify
Finisar to call some main exported function in that DLL, passing in a
sqlite3 * object every
- Original Message -
From: "Jay Sprenkle" <[EMAIL PROTECTED]>
To: <sqlite-users@sqlite.org>
Sent: Wednesday, May 24, 2006 6:31 AM
Subject: Re: [sqlite] Extra functions - New Project?
I can think of two options:
1. Create a .NET assembly that wraps Finisar
On 5/24/06, Mikey C <[EMAIL PROTECTED]> wrote:
Thanks for the response.
I did think of this, but this is a pain since:
1. I am using the Finisar ADO.NET provider and to do this these functions
would need to be registered every time the database connection is opened and
closed and I don't want
Thanks for the response.
I did think of this, but this is a pain since:
1. I am using the Finisar ADO.NET provider and to do this these functions
would need to be registered every time the database connection is opened and
closed and I don't want to have to mess with the ADO.NET provider code.
On 24/05/06, Mikey C <[EMAIL PROTECTED]> wrote:
Hi,
I am in need of some new SQL functions and wanted to ask advice on the best
way to integrate these functions into SQLite 3. I am not a proficient C
coder unfortunately.
What is the best way forward? Have someone develop these and add them
Hi,
I am in need of some new SQL functions and wanted to ask advice on the best
way to integrate these functions into SQLite 3. I am not a proficient C
coder unfortunately.
I have compiled the source for 3.5.5 using Visual Studio.NET 2003 and all
works fine.
I have added a couple of simple
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