How to fix the Oracle error QSM-01784: equivalence string has an anchor table string not found in query?

In this post, you’ll learn more about the Oracle ErrorQSM-01784: equivalence string has an anchor table string not found in query with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-01784: equivalence string has an anchor table string not found in query

Reason for the Error QSM-01784: equivalence string has an anchor table string not found in query

A table in an equivalence is an anchor, if (a) it is not joined to any other table or (b) it is joined to other tables but each of its joins is not guaranteed to provide all the rows or joined with the above table being child-side table. If an anchor which is present in the equivalence is not found in the query, then query rewrite will not take place.

How to fix the Error QSM-01784: equivalence string has an anchor table string not found in query ?

You can fix this error in Oracle by following the below steps

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