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Ph='025' substring(Ph,1,3)='025' substring(Ph,1,2,3)='025' Ph like'025*'
-8 -6 8
Ph='025' substring(Ph,1,3)='025' substring(Ph,1,2,3)='025' Ph like'025*'
2 -2 -
025-3792645 ^025-3792645 “025-3792645 ‘025-3792645
Ph=’025’ substring(Ph,1,3)=’025’ substring(Ph,1,2,3)=’025’ Ph like’025*’
“025-3792645 ‘025-3792645 025-3792645 ”025-3792645