Function generateUUIDForTable

src/Interpreters/InterpreterCreateQuery.cpp:1038–1049

}

static void generateUUIDForTable(ASTCreateQuery & create)
{
    if (create.uuid == UUIDHelpers::Nil)
        create.uuid = UUIDHelpers::generateV4();

    /// If destination table (to_table_id) is not specified for materialized view,
    /// then MV will create inner table. We should generate UUID of inner table here,
    /// so it will be the same on all hosts if query in ON CLUSTER or database engine is Replicated.
    bool need_uuid_for_inner_table = !create.attach && create.is_materialized_view && !create.to_table_id;
    if (need_uuid_for_inner_table && create.to_inner_uuid == UUIDHelpers::Nil)
        create.to_inner_uuid = UUIDHelpers::generateV4();
}

void InterpreterCreateQuery::assertOrSetUUID(ASTCreateQuery & create, const DatabasePtr & database) const
{