Re: Views With Unions

Stephan Szabo wrote:

>On Thu, 31 Jul 2003, Christopher Browne wrote:
>
>
>
>> select * from log_table where request_time between 'june 11 2003' and
>> 'june 12 2003';
>>
>>returns a plan:
>>Subquery Scan log_table (cost=0.00..10950.26 rows=177126 width=314)
>> -> Append (cost=0.00..10950.26 rows=177126 width=314)
>> -> Subquery Scan *SELECT* 1 (cost=0.00..3089.07 rows=50307 width=71)
>> -> Seq Scan on log_table_1 (cost=0.00..3089.07 rows=50307 width=71)
>> -> Subquery Scan *SELECT* 2 (cost=0.00..602.92 rows=9892 width=314)
>> -> Seq Scan on log_table_2 (cost=0.00..602.92 rows=9892 width=314)
>> -> Subquery Scan *SELECT* 3 (cost=0.00..2390.09 rows=39209 width=314)
>> -> Seq Scan on log_table_3 (cost=0.00..2390.09 rows=39209 width=314)
>>
>>
>
>What version are you using? In 7.3 and up it should be willing to
>consider moving the clause down, unless there's something like a type
>mismatch (because in that case it may not be equivalent without a bunch
>more work on the clause).
>
Dear Chris,

I had the same problem(type mismatch) and it was solved finally.
check the list
"factoring problem ... " subject only 2 weeks back .

regds
mallah.

>
>
>
>---------------------------(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
>
>