Colton A Smith <[EMAIL PROTECTED]> wrote ..

>   Seq Scan on sensor  (cost=0.00..1.25 rows=1 width=6) (actual 
> time=0.055..0.068 rows=1 loops=1)
>     Filter: (sensor_id = 12)
>   Total runtime: 801641.333 ms
> (3 rows)

Do you have some foreign keys pointing in the other direction? In other words, 
is there another table such that a delete on sensors causing a delete (or a 
check of some key) in another table? EXPLAIN doesn't show these. And that might 
be a big table missing an index.

---------------------------(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

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