想从 mysql db 中的电话号码中获取国家区号

Question

I'm having phone number 1212010089 and want to know from which country I'm getting this number.I do have a table_1 which is having column1 area_code where lots of area codes are available and column2 location which is having an equivalent location according to that area_code the maximum length of area_code is 7 in it so please suggest me an appropriate sql query by which I can find the location from that number. Thanks in advance.

Answer 1

Try something like:

SELECT location
FROM table_1
WHERE '237690000000' LIKE CONCAT(area_code,'%')
AND LENGTH(area_code)=
(SELECT MAX(LENGTH(area_code))
FROM table_1
WHERE '237690000000' LIKE CONCAT(area_code,'%'));

See Demo on DB-SQL Fiddle .

Answer 2

you can also try this:

SELECT location FROM table_1 WHERE '23769111111' LIKE CONCAT(area_code,'%') ORDER BY LENGTH area_code DESC LIMIT 1