The sqlite3_prepare API call compiles the SQL to a target code called
VDBE. The VDBE code is executed by the Sqlite VDBE engine. Once
compiled the VDBE may e reused.
Mina R Waheeb wrote:
Hi,
Yes, You are right. How SQLite will know the position of the row 990
unless it ordered by indexed
Hi,
Yes, You are right. How SQLite will know the position of the row 990
unless it ordered by indexed field.
That takes me to another point, How SQLite exactly interpret the query, I
read in the documentation "After the parser assembles tokens into complete
SQL statements, it calls the code
--- Mina R Waheeb <[EMAIL PROTECTED]> wrote:
> Do you mean the LIMIT in SQLite is not optimized? and the performance
> of selecting from table contains 1000 rows match the query condation
> equal selecting the same condation with limit 990,10?
Pretty much, yes, as it should be.
LIMIT is
On 8/18/07, Mina R Waheeb <[EMAIL PROTECTED]> wrote:
> Hi,
> Thanks for reply. I'm still confused about that. I don't know much
> about SQLite internals, But what i understanded from your reply that
> SQLite fetch any row match the query condation and then apply to it
> the GROUP BY then apply
Hi,
Thanks for reply. I'm still confused about that. I don't know much
about SQLite internals, But what i understanded from your reply that
SQLite fetch any row match the query condation and then apply to it
the GROUP BY then apply to it the ORDER BY is there is any, And when
the LIMIT appears
--- Mina R Waheeb <[EMAIL PROTECTED]> wrote:
> I have some questions about the behavior of aggregate functions and
> the result LIMIT.
> After register TEST function and executing query (SELECT TEST() FROM
> objects group by id LIMIT 30,3)
>
> I was expect calling back TEST() only 3 times but
om: Mina R Waheeb [mailto:[EMAIL PROTECTED]
> Sent: Friday, August 17, 2007 12:12 PM
> To: sqlite-users@sqlite.org
> Subject: [sqlite] Aggregate and query limit
>
> Hi,
> I have some questions about the behavior of aggregate functions and the
> result LIMIT.
> After register TES
Subject: [sqlite] Aggregate and query limit
Hi,
I have some questions about the behavior of aggregate functions and the
result LIMIT.
After register TEST function and executing query (SELECT TEST() FROM objects
group by id LIMIT 30,3)
I was expect calling back TEST() only 3 times but what happened
Hi,
I have some questions about the behavior of aggregate functions and
the result LIMIT.
After register TEST function and executing query (SELECT TEST() FROM
objects group by id LIMIT 30,3)
I was expect calling back TEST() only 3 times but what happened is the
TEST() is called 33 time, and the
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