--第一段 SELECT substr('1233***6795', 0, (select instr('1233***6795', '***', 1, 1) from dual) - 1) from dual; --第二段 SELECT substr('1233***6795',((select instr('1233***6795', '***', 1, 1) from dual) + 3), (select length('1233***6795') from dual)) from du…