UNSUPPORTED_GENERATOR error condition

SQLSTATE: 42K0E

The generator is not supported:

MULTI_GENERATOR

only one generator allowed per SELECT clause but found <num>: <generators>.

NESTED_IN_EXPRESSIONS

nested in expressions <expression>.

NOT_GENERATOR

<functionName> is expected to be a generator. However, its class is <classCanonicalName>, which is not a generator.

OUTSIDE_SELECT

outside the SELECT clause, found: <plan>.