Adam, your query using LIMIT and a less-restricting WHERE is slower
because you have an ORDER BY clause.
ORDER BY is always one of the slowest things you can do in a query
because every record returned by WHERE (or HAVING if you're using
GROUP BY) has to be compared to every other record for
There is a systemic problem with sqlite and multi-thread access to the in memory
database.
1. Create a RAM Drive. [OS specific, see your development software.]
2. Point database to the RAM Drive. You should not suffer too much speed degredation
from the RAM Drive.
3. This will give you
On Fri, 3 Sep 2004, John LeSueur wrote:
I think this file is created everytime you start a transaction. Maybe even
if you only perform read only commands. The journal is what is used to keep
track of the changes to the database. Anyone else have any thoughts?
yes - it is. the thing is, unless a
Hi all!
Since my database growed to more than 20 000 records, I have noticed that
select limited to a few numer of records by LIMIT takes much more time than
select limited to similar number of records by another WHERE condition.
I use sqlite_get_table function.
In my case I have the following
For a more useful test, please make a second table with 2 fields,
like Test but with a second VARCHAR(10) column. Then compare the
speed of inserting into that table vs inserting into your first one.
After all, if the problem is specific to single-column tables, then
we should get rid of all
Hello sqlite users,
Hello Dr. Hipp,
while using sqlite v3.0.6, I've discovered that doing a single INSERT or
UPDATE on a table which has only one field is very slow:
CREATE TABLE Test (Field1 VARCHAR(10));
INSERT INTO Test VALUES ('123');
the INSERT statement above takes approx. 150 milliseconds
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