**Use case**
`SELECT POSITION('/' IN s) FROM (SELECT 'Hello/World' AS s);`

The same as `position(s, '/')`

return false;
    TTLMode mode;
    DataDestinationType destination_type = DataDestinationType::DELETE;
    String destination_name;
    if (s_to_disk.ignore(pos))
    {
        mode = TTLMode::MOVE;
        destination_type = DataDestinationType::DISK;
    }
    else if (s_to_volume.ignore(pos))
    {
        mode = TTLMode::MOVE;
        destination_type = DataDestinationType::VOLUME;
    }
    else if (s_group_by.ignore(pos))
    {
        mode = TTLMode::GROUP_BY;
    }
    else if (s_recompress.ignore(pos))
    {
        mode = TTLMode::RECOMPRESS;
    }
    else
    {
        s_delete.ignore(pos);
        mode = TTLMode::DELETE;
    }
    ASTPtr where_expr;
    ASTPtr ast_group_by_key;
    ASTPtr recompression_codec;