problem description

orcaleABCAPHONEBPHONECPHONE:
A              B               C
ID PHONE         ID PHONE         ID PHONE
a1 11111         b1 11111         c1 11111
a1 22222         b2 33333         c2 11111

now I want to change the PHONE=11111 in tables A, B and C to 88888, which is like the following figure:

A                B                C
ID PHONE         ID PHONE         ID PHONE
a1 88888         b1 88888         c1 88888
a1 22222         b2 33333         c2 88888

which Taoist friend has a better way!
Note:

1.sql,update,orcale
2.
3.mybatis