Ordering properties in MS SQL Server - including flats -


i have been given cag , i'm trying sort address postcode , building number. problem face building number not integer, it's nvarchar- because of flat properties.

you can see 79b appears after 143:

131 133a 133b 135 137 139 141 143 79b <-- 87  89  91

i have found similar question: sql-for-ordering-by-number-1-2-3-4-etc-instead-of-1-10-11-12

and tried this

sql += "order buildno * 1 asc ";

but predictably conversion error

conversion failed when converting nvarchar value '133a' data type int.

is possible order type of nvarchar in sql?

thanks

update

i know have working, @paya

select * [" + tblname + "]  postcode + @postcode + '%'  order cast(left([buildno], case when patindex(n'%[^0-9]%', [buildno]) < 1 len([buildno]) else patindex(n'%[^0-9]%', [buildno]) - 1 end) int),  right([buildno], len([buildno]) - patindex(n'%[^0-9]%', [buildno]) + 1)

returns correct order:

79b 87  89  91  133b 135 137 139 141 143

in mssql server

order cast(left([colname], case when patindex(n'%[^0-9]%', [colname]) < 1 len([colname]) else patindex(n'%[^0-9]%', [colname]) - 1 end) int), right([colname], len([colname]) - patindex(n'%[^0-9]%', [colname]) + 1);


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