PLS-00315: Implementation restriction: unsupported table index type

Cause: In the INDEX BY clause of a PL/SQL table declaration, a datatype other than BINARY_INTEGER, PLS_INTEGER, or VARCHAR2 was specified. PL/SQL tables can have one column and a primary key. The column can have any scalar type, but the primary key must be either a binary integer type or VARCHAR2.

Action: Use one of the supported key types in the INDEX BY clause.

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