SQL Phone Number Conversion

Question

I have phone numbers in a SQL database stored in (xxx) xxx-xxxx format. is there any way to cast these as xxxxxxxxxx format instead?

Answer 1

只需使用REPLACE()函数即可：

SELECT REPLACE(REPLACE(REPLACE(REPLACE('(XXX) XXX-XXXX','(',''),')',''),'-',''),' ','')

Answer 2

Assuming you are using Oracle or MySQL 8+, you could use REGEXP_REPLACE :

SELECT
    REGEXP_REPLACE('(914) 591-8563', '\((\d{3})\)\s*(\d{3})-(\d{4})', '\1\2\3')
FROM dual;

9145918563

This solution works via regex by capturing the 10 digits, and then generating a replacement of only digits. Explore the demo below using either Oracle or MySQL 8+:

Demo