                 SELECT instr(lower(abc), '123')
     sql_keyword ------
        sql_func        -----------------------
       sql_ident        -----
        sql_func              ---------
       sql_ident              -----
       sql_ident                    ---
       sql_comma                        -
      sql_string                          -----
lower: Returns a copy of the given string with all ASCII characters converted to lower case.
