Обсуждение: New accec method
Hi,
I am trying create a new access method for the PostgreSQL.
Reading the manual, I learned that must implement 12 functions (build, insert, gettuple, beginscan, ...).
In the begin its OK. As soon as I type the command 'CREATE INDEX' the function 'build' is call and the index is create. When I call the command 'INSERT' all its OK too.
The problem is when I do some query. NEVER its call the 'beginscan', 'gettuple' or another function that is related with a query, that is, in the querys my index do not being used.
What it can be causing this?
Since already I am thankful,
Thiago M. Ventura
I am trying create a new access method for the PostgreSQL.
Reading the manual, I learned that must implement 12 functions (build, insert, gettuple, beginscan, ...).
In the begin its OK. As soon as I type the command 'CREATE INDEX' the function 'build' is call and the index is create. When I call the command 'INSERT' all its OK too.
The problem is when I do some query. NEVER its call the 'beginscan', 'gettuple' or another function that is related with a query, that is, in the querys my index do not being used.
What it can be causing this?
Since already I am thankful,
Thiago M. Ventura
"Thiago Ventura" <thiventura@gmail.com> writes:
> The problem is when I do some query. NEVER its call the 'beginscan',
> 'gettuple' or another function that is related with a query, that is, in the
> querys my index do not being used.
> What it can be causing this?
Have you created operator classes to show what WHERE-clauses can be used
with the index?
regards, tom lane