On 3/29/10 23:10 , Tim Romano tim.rom...@yahoo.com wrote:
On 3/29/2010 4:19 PM, Kevin M. wrote:
I have a C/C++ application in which I want to store data from a struct into a
table (using SQLite 3.6.23) and later retrieve data from the table and store
it back in the struct. But, I need a
On Tue, Mar 30, 2010 at 4:30 AM, Jean-Denis Muys jdm...@kleegroup.comwrote:
snip
See http://www.boost.org and more specifically:
http://www.boost.org/doc/libs/1_42_0/libs/serialization/doc/index.html
snip
The OP's question is another form of this question: What's the best way to
violate
: [sqlite] Preserving column size
On Tue, Mar 30, 2010 at 4:30 AM, Jean-Denis Muys jdm...@kleegroup.comwrote:
snip
See http://www.boost.org and more specifically:
http://www.boost.org/doc/libs/1_42_0/libs/serialization/doc/index.html
snip
The OP's question is another form of this question
:16 AM
Subject: Re: [sqlite] Preserving column size
On Tue, Mar 30, 2010 at 4:30 AM, Jean-Denis Muys jdm...@kleegroup.com
wrote:
snip
See http://www.boost.org and more specifically:
http://www.boost.org/doc/libs/1_42_0/libs/serialization/doc/index.html
snip
The OP's question
Sorry I misunderstood your requirement, Kevin. I was focusing on the
singular a table and the table in your original post, versus the plural
many types of structs. I thought you were looking for serialization
approach.
Regards
Tim Romano
Ah, now I see from where the misunderstanding
I have a C/C++ application in which I want to store data from a struct into a
table (using SQLite 3.6.23) and later retrieve data from the table and store it
back in the struct. But, I need a general interface for this as there are many
types of structs used. So, what I have is a function
Kevin M. athlo...@yahoo.com wrote:
I have a C/C++ application in which I want to store data from a
struct into a table (using SQLite 3.6.23) and later retrieve data
from the table and store it back in the struct. But, I need a
general interface for this as there are many types of structs
So, is there a way I can tell SQLite to preserve the data size in a
particular column?
As long as you use blobs to store your structs, yes you can tell
SQLite to preserve data size. You cannot do that for any other type,
but it sounds like you don't need any other type because all you need
is
Can't you just store the struct as a blob and be done with it?
No, I can't use a blob because there are other queries where I want individual
columns. Storing to and from a struct is only one part of the application.
Sorry, perhaps I should have specified that too.
Why is 99 a 16-bit
On Mar 29, 2010, at 4:19 PM, Kevin M. wrote:
However, this method breaks down if a store a 16-bit integer value
like 99 and SQLite stores it internally as an 8-bit value (to save
space) and subsequently retrieves it and gives me a value of 1 for
sqlite3_column_bytes().
I think you are
Kevin M. athlo...@yahoo.com wrote:
Why is 99 a 16-bit integer value and not, say, an 8-bit or a 32-bit
one? How is SQLite supposed to know?
How would SQLite know if 99 is 16-bit, 8-bit, 32-bit, etc... using
the CREATE TABLE specified data types as a hint.
INT1, INT2 and so on don't have
On Mon, Mar 29, 2010 at 4:19 PM, Kevin M. athlo...@yahoo.com wrote:
I have a C/C++ application in which I want to store data from a struct into
a table (using SQLite 3.6.23) and later retrieve data from the table and
store it back in the struct. But, I need a general interface for this as
On Mon, Mar 29, 2010 at 4:14 PM, Tim Romano tim.romano...@gmail.com wrote:
On Mon, Mar 29, 2010 at 4:19 PM, Kevin M. athlo...@yahoo.com wrote:
I have a C/C++ application in which I want to store data from a struct into
a table (using SQLite 3.6.23) and later retrieve data from the table and
I'm confused. Do you, or don't you, want to use type names like INT1 or INT2
to indicate the width in bytes of an integer field? If you do, you can act on
them yourself using sqlite3_column_decltype. If you don't, the question
remains: how do you plan to indicate the width of the field?
On Mon, Mar 29, 2010 at 02:01:42PM -0700, Kevin M. scratched on the wall:
Can't you just store the struct as a blob and be done with it?
No, I can't use a blob because there are other queries where I want
individual columns. Storing to and from a struct is only one part
of the application.
Kevin M. wrote:
I have a C/C++ application in which I want to store data from a struct into a
table (using SQLite 3.6.23) and later retrieve data from the table and store
it back in the struct. But, I need a general interface for this as there are
many types of structs used. So, what I
On 3/29/2010 4:19 PM, Kevin M. wrote:
I have a C/C++ application in which I want to store data from a struct into a
table (using SQLite 3.6.23) and later retrieve data from the table and store
it back in the struct. But, I need a general interface for this as there are
many types of
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