Vernon Wu <vernonw@gatewaytech.com> writes:
> Which query statement is better in terms of preformance ?
> select ... from table1 where field1 in ('a', 'b', 'c')
> select ... from table1 where field1='a' or field1='b' or field1='c'
There is no difference, other than the microseconds the parser spends
transforming form 1 into form 2 ...
regards, tom lane