對(duì)其它進(jìn)制可以根據(jù)例子將power的底數(shù)改成相應(yīng)的進(jìn)制就可以了。本文只是一個(gè)例子，大家可以把它封裝成一個(gè)通用函數(shù)進(jìn)行實(shí)用。大家在試的時(shí)候?qū)⒗锩嫦鄳?yīng)的其它進(jìn)制的數(shù)值換成自己的數(shù)據(jù)就可。

二進(jìn)制轉(zhuǎn)換十進(jìn)制

select sum(data1)from (select substr('1101', rownum, 1) * power(2, length('1101') - rownum) data1from dualconnect by rownum <= length('1101'))

八進(jìn)制轉(zhuǎn)換十進(jìn)制

select sum(data1)from (select substr('1101', rownum, 1) *power(8, length('1101') - rownum) data1from dualconnect by rownum <= length('1101'))

十六進(jìn)制轉(zhuǎn)換十進(jìn)制

select sum(data1)from (select (CASE upper(substr('2D', rownum, 1))WHEN 'A' THEN '10'WHEN 'B' THEN '11'WHEN 'C' THEN '12'WHEN 'D' THEN '13'WHEN 'E' THEN '14'WHEN 'F' THEN '15'ELSE substr('2D', rownum, 1)END) * power(16, length('2D') - rownum) data1from dualconnect by rownum <= length('2D'))