Wholly agreed and I often say the same thing. But I do not consider basic indexing on a database to be "premature optimization". I do consider it to be a a mistake since you almost certainly find performance issues (unless the table is small enough that indexing is a mistake), then you'll have to track down the cause of the issues (commonly called "a bug") and then will have to add indexes.
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>Premature optimization is a mistake.
Wholly agreed and I often say the same thing. But I do not consider basic indexing on a database to be "premature optimization". I do consider it to be a a mistake since you almost certainly find performance issues (unless the table is small enough that indexing is a mistake), then you'll have to track down the cause of the issues (commonly called "a bug") and then will have to add indexes.