Sorting IP addresses in TSQL

Question

I need my IP list sorted. Problem is that i want them sorted after the value in the first part, then second part and so on.

MYTABLE

DATA
20.1.2.1
100.1.1.1
20.1         


        

Answer 1

Although it wasn't designed for IP addresses, you can use PARSENAME to divide a string into sections by splitting on the period.

I see though that you have IP addresses with a colon instead of a period, so you would just need to replace all your colons with a period.

Thus, you could do:

SELECT *
FROM MyTable
ORDER BY CAST(PARSENAME(REPLACE(Data, ':', '.'), 4) as int),
    CAST(PARSENAME(REPLACE(Data, ':', '.'), 3) as int),
    CAST(PARSENAME(REPLACE(Data, ':', '.'), 2) as int),
    CAST(PARSENAME(REPLACE(Data, ':', '.'), 1) as int)

You can throw this in Query Analyzer to confirm it works:

SELECT *
FROM (
    SELECT '20:1:2:1' AS Data UNION
    SELECT '100:1:1:1' UNION
    SELECT '20:1:10:1' UNION
    SELECT '80:8:8:8'
) X
ORDER BY CAST(PARSENAME(REPLACE(Data, ':', '.'), 4) as int),
    CAST(PARSENAME(REPLACE(Data, ':', '.'), 3) as int),
    CAST(PARSENAME(REPLACE(Data, ':', '.'), 2) as int),
    CAST(PARSENAME(REPLACE(Data, ':', '.'), 1) as int)

See the MSDN link for more information.