On 5/8/2014 10:11 AM, Jim Morris wrote:
To improve efficiency you could add where 1=2 to avoid returning any
rows. Should just check validity.
This being SQLite, as previously discussed, you could say where 0 :^)
--
Andy Goth | andrew.m.goth/at/gmail/dot/com
On Fri, May 9, 2014 at 8:36 AM, Andy Goth andrew.m.g...@gmail.com wrote:
On 5/8/2014 10:11 AM, Jim Morris wrote:
To improve efficiency you could add where 1=2 to avoid returning any
rows. Should just check validity.
This being SQLite, as previously discussed, you could say where 0 :^)
i
On Fri, May 9, 2014 at 11:38 AM, Stephan Beal sgb...@googlemail.com wrote:
i don't think a WHERE is necessary to improve the efficiency. The
statement only gets prepared, not stepped, and i would not expect any
analysis of results until the first step() (but maybe i'm assuming too
much).
In
On Wed, May 7, 2014 at 6:31 PM, Richard Hipp d...@sqlite.org wrote:
On Wed, May 7, 2014 at 9:00 AM, Marco Bambini ma...@sqlabs.net wrote:
What is the best way to know if a table has been created with the WITHOUT
ROWID option?
(1) You could send SELECT rowid FROM table
(2) Run both
i need to transfer sqlite.db from server to client in udp socket.. working
in c language.. .. i dont know how to transmit db. in client side it
should create copy of db.
if client ask name of db to server . server should transmit..
On Fri, May 9, 2014 at 3:09 PM, Stephan Beal
Vlasov [mailto:max.vla...@gmail.com]
Gesendet: Freitag, 09. Mai 2014 12:10
An: General Discussion of SQLite Database
Betreff: Re: [sqlite] WITHOUT ROWID option
On Wed, May 7, 2014 at 6:31 PM, Richard Hipp d...@sqlite.org wrote:
On Wed, May 7, 2014 at 9:00 AM, Marco Bambini ma...@sqlabs.net wrote
On 9 May 2014, at 11:17am, Sky Meena sky.me...@gmail.com wrote:
i need to transfer sqlite.db from server to client in udp socket
Please start a new thread about this. It has nothing to do with 'WITHOUT ROWID
option'.
Simon.
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To improve efficiency you could add where 1=2 to avoid returning any
rows. Should just check validity.
On 5/7/2014 8:19 AM, Stephan Beal wrote:
On Wed, May 7, 2014 at 4:57 PM, Simon Slavin slav...@bigfraud.org wrote:
somehow ? Perhaps the ROWID field of a table might have its own
What is the best way to know if a table has been created with the WITHOUT ROWID
option?
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Marco Bambini
http://www.sqlabs.com
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SELECT instr(upper(sql),'WITHOUT ROWID')1 FROM sqlite_master WHERE
type='table' AND tbl_name='YourTableName'
Returns 1 for tables made without rowid, 0 for the rest.
On 2014/05/07 15:00, Marco Bambini wrote:
What is the best way to know if a table has been created with the WITHOUT ROWID
On 5/7/2014 9:40 AM, RSmith wrote:
SELECT instr(upper(sql),'WITHOUT ROWID')1 FROM sqlite_master WHERE
type='table' AND tbl_name='YourTableName'
Returns 1 for tables made without rowid, 0 for the rest.
CREATE TABLE t(x text default 'WITHOUT ROWID');
--
Igor Tandetnik
Apologies, my answer reads more like a How to than a What is the best way type answer, so to just elaborate on the brevity -
SQLite stores no special pointer or memory or setting or even file value anywhere that can give you any clue apart from the actual
words Without RowID which are found only
...or indeed this malicious-but-valid table-schema design would prove
problematic.
Other that might cause similar headaches are:
CREATE TABLE t(x text // )WITHOUT ROWID;
);
or
CREATE TABLE t(x text); // )WITHOUT ROWID;
etc.
It would require a rather convoluted check to be very
So, is there an official recommended way? or that check should require a manual
sql parsing?
--
Marco Bambini
http://www.sqlabs.com
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On 07 May 2014, at 15:51, Igor Tandetnik i...@tandetnik.org wrote:
On 5/7/2014 9:40 AM, RSmith wrote:
On Wed, May 7, 2014 at 9:00 AM, Marco Bambini ma...@sqlabs.net wrote:
What is the best way to know if a table has been created with the WITHOUT
ROWID option?
(1) You could send SELECT rowid FROM table to sqlite3_prepare() and see
if it returns an error. This might fail on a table like
Thanks a lot Richard, I really appreciate.
--
Marco Bambini
http://www.sqlabs.com
http://twitter.com/sqlabs
http://instagram.com/sqlabs
On 07 May 2014, at 16:31, Richard Hipp d...@sqlite.org wrote:
On Wed, May 7, 2014 at 9:00 AM, Marco Bambini ma...@sqlabs.net wrote:
What is the best way
On 7 May 2014, at 3:31pm, Richard Hipp d...@sqlite.org wrote:
(2) Run both PRAGMA index_list(table) and SELECT name FROM sqlite_master
WHERE tbl_name='table'. If the PRAGMA mentions an
sqlite_autoindex_table_1 which is not mentioned by the SELECT, then you
have a WITHOUT ROWID table. This
On Wed, May 7, 2014 at 4:57 PM, Simon Slavin slav...@bigfraud.org wrote:
somehow ? Perhaps the ROWID field of a table might have its own
particular indication, and if you don't see any rows marked like that you
could deduce that the table had no ROWID column. I'm sure there are better
ways
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