wow=# explain analyze select max(click.accesses) from click;
QUERY PLAN
-----------------------------------------------------------------------------------------------------------------
Aggregate (cost=1103.70..1103.70 rows=1 width=8) (actual time=289.391..289.393 rows=1 loops=1)
-> Seq Scan on click (cost=0.00..971.36 rows=52936 width=8) (actual time=0.013..133.943 rows=52936 loops=1)
Total runtime: 289.498 ms
(3 rows)
Time: 290,695 ms
select max() returns only one row... If you mean rows in Seq Scan than gettimeofday was called (52936+1)*2. Huge value :(
Tom Lane wrote:
Teodor Sigaev <[EMAIL PROTECTED]> writes:
How many times is gettimeofday called?
Twice per plan node visit, if you are doing EXPLAIN ANALYZE. (The number of "visits" is one more than the number of rows returned.)
regards, tom lane
---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
-- Teodor Sigaev E-mail: [EMAIL PROTECTED]
---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
