see functional index On Wed, 25 Oct 2000 13:26:51 -0400 "Will Fitzgerald" <[EMAIL PROTECTED]> wrote: > I have a table, login, which has a field by the same name; there's an index > on that field. I was surprised to discover that a SELECT which compares the > login field to a constant uses an Index scan, but if it is compared to a > function call--for example, lower()--a sequence scan is forced. > > Any idea why? -- * Hosokawa Tetsuichi * [EMAIL PROTECTED]
- [SQL] Surprising sequence scan when function call used Will Fitzgerald
- Re: [SQL] Surprising sequence scan when function c... Tom Lane
- Hosokawa Tetsuichi