"expr IN ()" to "false", take care not to delete aggregate functions
in the "expr" as doing so can change the meaning of the query.
See [forum:/forumpost/f4878de3e7dd4764|forum thread f4878de3e7].
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of an index, though the code generator still rejects everything other than
simple column names. The sqlite3RestrictColumnListSyntax() routine is removed
since that feature is now handled by the parser.
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