On postgres 7.2.3 I have found what follows:
explain select * from documents where iddoc>1;
Seq Scan on lotti (cost=0.00..831.79 rows=26783 width=98)
EXPLAIN
explain select * from documents where iddoc=1;
Index Scan using lotti_pkey on lotti (cost=0.00..2.26 rows=1 width=98)
Why index is n
I have been tring to use index on timestamps:
I have a table with a timestamp filed with index on it.
I nned to extract all the ids of the table with datarx
>= a date
<= a date
or between 2 dates
I found that the only way to force postgres to use index is:
explain select id,datarx::da
HI!
I'm new to postgres. I need to have a table as a copy of another one.
Example:
CREATE TABLE one (
fileda INTEGER,
filedb INTEGER,
filedc INTEGER );
CREATE TABLE two (
fileda INTEGER,
filedb INTEGER,
filedc INTEGER );
As on insert to table o
