Thread: Faster performance when using where cust_id = '123' vs cust_id = 123. Does 7.4 fix this??

We have got used to the problem that queries of the format:

select *
from customer
where cust_id = '123' are much much faster than

select *
from customer
where cust_id = 123

(where cust_id is defined as bigint).

a. Why is this.

b. Will moving to v7.4 change this so we can avoid the whole '123' casting
thing.

Tx folks,
D

David B wrote:
> We have got used to the problem that queries of the format:
>
> select *
> from customer
> where cust_id = '123' are much much faster than
>
> select *
> from customer
> where cust_id = 123
>
> (where cust_id is defined as bigint).
>
> a. Why is this.

Because in the second case, the 123 gets resolved too early to type 
integer, which is not index compatible with type bigint.

> b. Will moving to v7.4 change this so we can avoid the whole '123'
> casting thing.

No, but 7.5 will be able to handle it.