Hi all,
I have created a table with two columns c1 and c2 and inserted some
values into,in future i may include some additional columns c3,c4. to
the same table.In tat case i should not loose my data in the current
table,so i should be able to copy the content of the current
OK Sqlite doesn't have a date type, period. Just as it doesn't have
other types, but don't let it it stop you from using dates very
successfully with Sqlite by defining a date type and using the
functionally built into the product.
The Sqlite storage model plus its style of declared types is
I updated the Incompatible Changes page with an idea for using hashed-key
indexes instead of b-tree indexes. exact-match retrievals could reduce the
number of disk pages necessary to read to find the rowid from an average of
Log(B)(n) (where B is the number of buckets per b-tree) to Log(2^B)(n).
--- John Stanton <[EMAIL PROTECTED]> wrote:
> Sqlite does have a date format, it is physically a 64 bit floating point
> number. There are functions to transform in and out of that format to
> present dates as required by the user. The Sqlite date format uses a
> magib epoch which matches all
Hi,
I'm a little new to SQLite, but have been using it successfully for about 8
months, as a read only repository for application configuration parameters in
my mod_perl based web application. I have recently added functionality to
update the configuration tables I have, via the web interface.
Look at the date functions, the file date.c is self explanatory and
lists the reference for the date type. The underlying type for a date
is a float, so that may be how you missed the date details.
P Kishor wrote:
On 6/4/07, John Stanton <[EMAIL PROTECTED]> wrote:
Sqlite does have a date
Scott Baker wrote:
Is there a list somewhere (I can't find it on the wiki) of all the
functions (specifically math) functions that sqlite understands?
I'm thinking things like: int, round, floor, ceil, sqrt etc.
You have the source. They are all presented there and you can add more
if you
Chris Fonnesbeck wrote:
On 6/4/07, P Kishor <[EMAIL PROTECTED]> wrote:
There is no "DATE" format in SQLite. Dates are stored as strings. The
only formats SQLite knows and understands are TEXT, REAL, INTEGER,
BLOB, and NULL (see the link on datatypes). On the other hand, there
are built-in
On 6/4/07, John Stanton <[EMAIL PROTECTED]> wrote:
Sqlite does have a date format, it is physically a 64 bit floating point
number.
If that is the case, I would love to see the documentation on that. As
far as I can see, there are only TEXT, REAL, INTEGER, BLOB, NULL types
supported.
There
We use declared types of DATE, TIMESTAMP and DATETIME and store dates as
floating point using the Sqlite date conversion functions. The
applications get dates formatted as ISO8601 or according to the declared
locale. Functions do date artithmetic.
Samuel R. Neff wrote:
SQLite doesn't have
Sqlite does have a date format, it is physically a 64 bit floating point
number. There are functions to transform in and out of that format to
present dates as required by the user. The Sqlite date format uses a
magib epoch which matches all of the major internaional date systems.
P Kishor
Chris Fonnesbeck wrote:
I'm at a complete loss about how to work with dates in SQLite. The
documentation doesnt seem to be helping me. I have a table with some date
fields, in the proper -mm-dd format:
sqlite> select First_Capture from PIT_manatees limit 5;
1997-6-17
1998-5-6
1997-6-24
OK, I think I found the problem. What I was doing was calling the
following inappropriately (for the wrong statement):
sqlite3_finalize(_stmt);
I was doing it previous to the update calls. There was nothing wrong
with the update calls. The problematic finalize was for a lookup.
The
On 6/4/07, Igor Tandetnik <[EMAIL PROTECTED]> wrote:
One step is always enough for INSERT, UPDATE and DELETE as they don't
produce a resultset. Only SELECT requires multiple steps, one for each
row.
I thought that might be the case. Thanks.
Will Leshner <[EMAIL PROTECTED]>
wrote:
On 6/4/07, Omar Eljumaily
wrote:
qlite3_prepare_v2(con->_db, text.c_str(), text.size(), &_stmt,
); sqlite3_bind_text(_stmt, which, s.c_str(), s.size(),
SQLITE_TRANSIENT); sqlite3_step(_stmt);
Is one step enough to finish the operation?
One step is
On 6/4/07, Omar Eljumaily <[EMAIL PROTECTED]> wrote:
qlite3_prepare_v2(con->_db, text.c_str(), text.size(), &_stmt, );
sqlite3_bind_text(_stmt, which, s.c_str(), s.size(), SQLITE_TRANSIENT);
sqlite3_step(_stmt);
Is one step enough to finish the operation?
Igor Tandetnik wrote:
Do you, by any chance, begin a transaction, perform the updates, then
close the DB connection without committing the transaction (e.g. when
exiting the app)? If you do this or something similar, the transaction
gets rolled back.
Igor Tandetnik
This is what I have
Omar Eljumaily wrote:
"update mytable set name = 'newname' where id = 1"
would propogate for the life of the application, then disappear after
the app exits.
Do you, by any chance, begin a transaction, perform the updates, then
close the DB connection without committing the transaction
I have this problem where my application is is dropping updates after
exiting my application.
create mytable
{
int id primary key,
name text
};
Something like:
"insert into mytable(name) values('myname')"
would update properly.
However
"update mytable set name = 'newname' where id = 1"
Included functions:
http://www.sqlite.org/lang_expr.html
See the section "Core Functions" near the bottom of the page for the builtin
functions.
To add more:
http://www.sqlite.org/contrib
extension-functions.tgz for details on adding functions like ceil.
- TM
- Original Message -
Hi Chris,
I think you've seen Rich Shepard's reply, and emails crossed.
But just in case you didn't: The sqlite date/time functions require
input dates to contain a preceeding zero for month and day-of-month
where needed to make them two digits. E.g.,
'2007-6-4' bad
'2007-06-04'
Chris Fonnesbeck
wrote:
On 6/4/07, P Kishor <[EMAIL PROTECTED]>
wrote:
There is no "DATE" format in SQLite.
Wow, thanks. So, why does this table creation work then, and not give
an error?
CREATE TABLE PIT_manatees(Manatee_Log INTEGER, Name text,
First_Capture date, Recovered date, Coast
Is there a list somewhere (I can't find it on the wiki) of all the
functions (specifically math) functions that sqlite understands?
I'm thinking things like: int, round, floor, ceil, sqrt etc.
--
Scott Baker - Canby Telcom
RHCE - System Administrator - 503.266.8253
What you want is here:
http://www.sqlite.org/cvstrac/wiki?p=DateAndTimeFunctions
I'm thinking you want:
select First_Capture from PIT_manatees where date(First_Capture) <
'2000-1-1' limit 5;
- Scott
Chris Fonnesbeck wrote:
> I'm at a complete loss about how to work with dates in SQLite. The
>
On 6/4/07, P Kishor <[EMAIL PROTECTED]> wrote:
There is no "DATE" format in SQLite. Dates are stored as strings. The
only formats SQLite knows and understands are TEXT, REAL, INTEGER,
BLOB, and NULL (see the link on datatypes). On the other hand, there
are built-in functions that can act on
On Mon, 4 Jun 2007, Chris Fonnesbeck wrote:
I'm at a complete loss about how to work with dates in SQLite. The
documentation doesnt seem to be helping me. I have a table with some date
fields, in the proper -mm-dd format:
sqlite> select First_Capture from PIT_manatees limit 5;
1997-6-17
SQLite doesn't have any internal notion of a date, only numbers or strings.
You can choose to store dates as numbers and SQLite has some conversion
functions to help you work with dates. Personally I store dates as strings.
These are not properly formatted dates:
1997-6-17
1998-5-6
1997-6-24
There is no "DATE" format in SQLite. Dates are stored as strings. The
only formats SQLite knows and understands are TEXT, REAL, INTEGER,
BLOB, and NULL (see the link on datatypes). On the other hand, there
are built-in functions that can act on your date strings and convert
them back and forth,
I'm at a complete loss about how to work with dates in SQLite. The
documentation doesnt seem to be helping me. I have a table with some date
fields, in the proper -mm-dd format:
sqlite> select First_Capture from PIT_manatees limit 5;
1997-6-17
1998-5-6
1997-6-24
1998-5-6
2000-3-15
however,
I'm at a complete loss about how to work with dates in SQLite. The
documentation doesnt seem to be helping me. I have a table with some date
fields, in the proper -mm-dd format:
sqlite> select First_Capture from PIT_manatees limit 5;
1997-6-17
1998-5-6
1997-6-24
1998-5-6
2000-3-15
however,
On 6/4/07, Alberto Simões <[EMAIL PROTECTED]> wrote:
What happens when no space is left on device? Does the process die, or
does it try to store as much as it can using main memory?
SQLite should return an error indicating it failed to write to disk
and the reason indicates there is no space
Hi
What happens when no space is left on device? Does the process die, or
does it try to store as much as it can using main memory?
I'm asking this because I have a process dying (being killed) because
it exauted main memory.
Cheers
Alberto
--
Alberto Simões
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