On 9 May 2015, at 8:12pm, Drago, William @ CSG - NARDA-MITEQ wrote:
> Best idea yet! Anyone see any issues with this?
It's actually a comment, and SQLite provides ways of putting proper comments in
table definitions:
CREATE TABLE blob_table (
ModelNo TEXT, -- new-style models as used from
On Tue, 5 May 2015 12:05:51 -0700
Charles Munger wrote:
> At https://www.sqlite.org/mmap.html, the documentation mentions:
>
> "An I/O error on a memory-mapped file cannot be caught and dealt with
> by SQLite. Instead, the I/O error causes a signal which, if not
> caught by the application,
> -Original Message-
> From: sqlite-users-bounces at mailinglists.sqlite.org [mailto:sqlite-
> users-bounces at mailinglists.sqlite.org] On Behalf Of Eric Hill
> Sent: Saturday, May 09, 2015 2:14 PM
> To: General Discussion of SQLite Database
> Subject: Re: [sqlite] Please confirm what I
On Fri, 08 May 2015 14:49:54 -0700, Scott Doctor
wrote:
> Can I prepare multiple statements then implement them in
> arbitrary order (based on some logic)?
Yes.
> Or do the statements need to be prepared, stepped, finalized
> serially?
No. You even don't have to _finalize() the statement,
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
The sqlite3_memory_used and highwater interfaces are defined to return
a 64 bit value. They carefully call the 32 bit limited sqlite3_status
method and then cast to 64 bit. Instead they should call
sqlite3_status64.
Reported indirectly via
The comment approach could work, I guess, but why not just encode the type into
the column's declared type?
CREATE TABLE blob_table (
ModelNo TEXT,
SerialNo TEXT,
VSWR BLOB_DOUBLE
)
That's what I do with numeric columns that I need to identify as actually
containing dates. As I
On Sat, 09 May 2015 06:09:41 -0400
William Drago wrote:
> All,
>
> Say you encounter a blob in a database. There's no way to
> tell if that blob carries bytes, floats, doubles, etc, correct?
>
> Assuming the above is true, then is it always prudent to
> store some metadata along with your
On 5/9/2015 6:40 AM, Eduardo Morras wrote:
> On Sat, 09 May 2015 06:09:41 -0400
> William Drago wrote:
>
>> All,
>>
>> Say you encounter a blob in a database. There's no way to
>> tell if that blob carries bytes, floats, doubles, etc, correct?
>>
>> Assuming the above is true, then is it always
You may find what you need here:
https://sqliteforexcel.codeplex.com/
Good luck,
-Bill
On 5/8/2015 3:15 PM, Preston King wrote:
> Does anyone have an example of how to read sqlite blob records, that are not
> pictures, into Excel? I have been trying to find some VBA code to do this but
> am
On 5/9/15, William Drago wrote:
> All,
>
> Say you encounter a blob in a database. There's no way to
> tell if that blob carries bytes, floats, doubles, etc, correct?
As far as SQLite is concerned, a BLOB is just bytes. The
interpretation of those bytes (as floats, doubles, a JPEG thumbnail, a
All,
Say you encounter a blob in a database. There's no way to
tell if that blob carries bytes, floats, doubles, etc, correct?
Assuming the above is true, then is it always prudent to
store some metadata along with your blobs so that they can
be identified in the future?
Example table:
My design philosophy is that if I have to think about what something is,
then that thought is a piece of information that should accompany the
blob. Consider ten years from now when someone else is looking at the
database for the first time. Will they know what is in that blob? Column
names
In addition to this, where a BLOB represents something that could often be a
file on a disk, methods used to identify the types of those files could often
be
used. For example, with many binary file types the first few bytes of the file
are signatures for its type, eg with JPEG files for
On 8 May 2015, at 11:40pm, Scott Doctor wrote:
> So if I have a loop that finds a row with some data (statement1)
> then based on values from that row sets fields in other rows
> statement2 find a row to set new data
> statement3 set column to something,
> repeat n times.
> then go back and do
On Fri, May 8, 2015 at 7:01 PM, Stephen Broberg
wrote:
> (e.g., insert, update, delete, select, etc.). Specifically, I?d like to
> know whether a statement that either has run or is about to be run (via
> sqlite3_step) is a read-only (select) or write (pretty much everything
> else) operation.
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