Question: I have a table that stores the versions as under

```
Declare @tblVersion table(VersionNumber varchar(100))
 Insert into @tblVersion Values('1.3.1')
 Insert into @tblVersion Values('1.3.2.5')
 Insert into @tblVersion Values('1.4.1.7.12')
 Insert into @tblVersion Values('1.4.11.14.7')
 Insert into @tblVersion Values('1.4.3.109.1')
 Insert into @tblVersion Values('1.4.8.66')

 Select * From @tblVersion

VersionNumber
1.3.1
1.3.2.5
1.4.1.7.12
1.4.11.14.7
1.4.3.109.1
1.4.8.66

```

My requirement is that I need to sort them so that the output will be

```
VersionNumber
1.3.1
1.3.2.5
1.4.1.7.12
1.4.3.109.1
1.4.8.66
1.4.11.14.7

```

But if do a simple order by it does not work as expected

```
Select VersionNumber
 From @tblVersion
 Order By VersionNumber

VersionNumber
1.3.1
1.3.2.5
1.4.1.7.12
1.4.11.14.7
1.4.3.109.1
1.4.8.66

```

Help needed

Answer: 
This is generally called natural sort and there is no easy way to do it in SQL Server. Generally the data needs to be broken into fields or to fixed length segments of a field. It can be sorted on those field(s) for the desired order. 

```
VersionNumber VersionSort
1.3.1         0001.0003.0001
1.3.2.5       0001.0003.0002.0005
1.4.1.7.12    0001.0004.0001.0007.0012
1.4.11.14.7   0001.0004.0011.0014.0007
1.4.3.109.1   0001.0004.0003.0109.0001
1.4.8.66      0001.0004.0008.0066

```
If you are on SQL Server 2005 or later and the number of possible fields in version numbers is fixed, you could try the following approach:

```
SELECT t.*
FROM @tblVersion t
  CROSS APPLY (SELECT v = NULLIF(CHARINDEX('.', '.' + t.VersionNumber,        1), 0)) v1
  CROSS APPLY (SELECT v = NULLIF(CHARINDEX('.', '.' + t.VersionNumber, v1.v + 1), 0)) v2
  CROSS APPLY (SELECT v = NULLIF(CHARINDEX('.', '.' + t.VersionNumber, v2.v + 1), 0)) v3
  CROSS APPLY (SELECT v = NULLIF(CHARINDEX('.', '.' + t.VersionNumber, v3.v + 1), 0)) v4
  CROSS APPLY (SELECT v = NULLIF(CHARINDEX('.', '.' + t.VersionNumber, v4.v + 1), 0)) v5
ORDER BY
  CAST(SUBSTRING(t.VersionNumber, v1.v, v2.v - v1.v - 1) AS int),
  CAST(SUBSTRING(t.VersionNumber, v2.v, v3.v - v2.v - 1) AS int),
  CAST(SUBSTRING(t.VersionNumber, v3.v, v4.v - v3.v - 1) AS int),
  CAST(SUBSTRING(t.VersionNumber, v4.v, v5.v - v4.v - 1) AS int),
  CAST(SUBSTRING(t.VersionNumber, v5.v, 999) AS int)

```

All fields of a version number are extracted one by one and converted to integers, which are then used for sorting. (Basically, [@Brian](https://stackoverflow.com/questions/7870945/version-number-sorting-in-sql-server/7871016#7871016)'s idea, as it turns out.)