oracle 中trim函数跟replace函数的用法

oracle 中trim函数和replace函数的用法

For example:

trim('   tech   ')  would return 'tech'
trim(' '  from  '   tech   ')  would return 'tech'
trim(leading '0' from '000123')  would return '123'
trim(trailing '1' from 'Tech1')  would return 'Tech'
trim(both '1' from '123Tech111')  would return '23Tech'

--chr(10)是换行符，
    --chr(13)是回车，
    --replace(replace(tableSource,CHR(10),''),chr(13),'');