How can I add Regular Expression verify?
I need to write a Regular Expression for date whose format is 'yyyy-mm-dd'('2004-5-3' or '2004-05-03') and a Regular Expression for phone number whoes format is '12345678' or '1234567' or '13809441234'.
Thanks for any help.
The date format is a little tricky as there are many invalid combinations. You'd be better off calling TO_DATE with your user input and format mask. If an error is returned, the date is invalid.
For the phone number assuming a valid phone number could be 7, 8, or 11 digits (it's a little difficult to tell what the format your suggest is) then you could apply something like the following:
^[0-9]{7}([0-9]|[0-9]{4})?$
Regards.
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