Question

I have a table that has the following format for the data. All I want is just one code and phone number. It does not matter which phone number I get, all I need it one phone number.

• Code phoneNumber
• 1000009 [phone]
• 1000257 [phone]
• 1000257 [phone]
• 1000259 [phone] 1000259 [phone]
  1000259 [phone] 1000270 [phone] 1000276 [phone]

The results I need would look like:
Code phoneNumber
1000009 [phone]
1000257 [phone]
1000259 [phone]
1000270 [phone]
1000276 [phone]

Any help with the SQL query would be appreciated. Thank you

Answer 1

If any of the phoneNumbers for a given code is sufficient, you can use a GROUP BY with any of the aggregating functions to accomplish just that

This example uses the MAX aggregating function.

SELECT  Code
        , PhoneNumber = MAX(phoneNumber)
FROM    Table
GROUP BY
        Code