Depending on the DBMS, you could give it an index hint: from tableA (index ndx). You are correct though, most optimizers would simply give it a hard coded selectivity rating which almost always guarantees that an index won't be chosen for that particular column.

Jason L. Froebe

Blog, Tech Blog

In reply to Re^4: DBI placeholders and like statement by jfroebe
in thread DBI placeholders and like statement by jfroebe

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