QSM-01602: equivalence, string, requires join back to table,
string, on column, string
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Answer / guest
Cause: A column in the query does not appear in the
equivalence. Query rewrite will try to obtain this column
from the base table, by doing a join back to that column
with a materialized view. But join backs are not allowed for
equivalence rewrite as the required constraints are not
guaranteed to be found on the tables in the destination
statement of the equivalence.
Action: none
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