Generate UserNames

November 30, 2009

>>Script Language and Platform: SQL Server
This udf_SuggestUserName function generates usernames based on date of birth, zipcode, username, firstname and lastname. It also generates zodiac username based on date of birth.

Useful in suggesting a list of usernames to the person who is trying to register and if the username already exist in the database.

Usage:

select * from dbo.udf_SuggestUserName
   ('Kurara','Chibana','03-12-1982','07051','RainbowRiver')

--result
Chibana_07051
Chibana_Kurara
Chibana_Pisces_Chibana
Chibana19820312
Chibana82
ChibanaKurara
contact_Chibana
contact_Kurara
contact_RainbowRiver
contactChibana
contactKurara
contactRainbowRiver
KChibana
KChibana1982
KChibana82
Kurara_07051
Kurara_Chibana
Kurara_numberone
Kurara_Pisces_Kurara
Kurara19820312
Kurara82
KuraraChibana
Message_RainbowRiver
Pisces_Chibana
Pisces_Kurara
Pisces07051
Pisces19820312
RainbowRiver_07051
RainbowRiver_1
RainbowRiver_1982
RainbowRiver_2
RainbowRiver_3
RainbowRiver_4
RainbowRiver_5
RainbowRiver_6
RainbowRiver_7
RainbowRiver_8
RainbowRiver_9
RainbowRiver1
RainbowRiver1982
RainbowRiver19820312
RainbowRiver2
RainbowRiver3
RainbowRiver4
RainbowRiver5
RainbowRiver6
RainbowRiver7
RainbowRiver8
RainbowRiver82
RainbowRiver9
reach_Chibana
reach_Kurara
reach_RainbowRiver
reachChibana
reachKurara
reachRainbowRiver

Author: MAK

if exists (select * from dbo.sysobjects 
  where id = object_id(N'[dbo].[udf_SuggestUserName]') 
  and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[udf_SuggestUserName]
GO

Create function dbo.udf_SuggestUserName 
(@firstname varchar(100),
@lastname varchar(100),
@dob datetime,
@zipcode varchar(12),
@username varchar(100))
returns @usernameTable TABLE (username varchar(100))
as
begin
declare @year2 int
declare @zodiac varchar(15)
declare @dob2 datetime
set @dob2= convert
  (datetime,convert(varchar(2),month(@dob))+' -'+convert(varchar(2),day(@dob))+'-2000' )
select @zodiac = case 
when @dob2 between '3/21/2000' and '4/20/2000' then 'Aries'
when @dob2 between '4/21/2000' and '5/21/2000' then 'Taurus'
when @dob2 between '5/22/2000' and '6/22/2000' then 'Gemini'
when @dob2 between '6/23/2000' and '7/23/2000' then 'Cancer' 
when @dob2 between '7/24/2000' and '8/23/2000' then 'Leo'
when @dob2 between '8/24/2000' and '9/23/2000' then 'Virgo'
when @dob2 between '9/24/2000' and '10/23/2000' then 'Libra'
when @dob2 between '10/24/2000'and '11/22/2000'then 'Scorpio'
when @dob2 between '11/23/2000'and '12/22/2000' then 'Sagittarius'
when @dob2 between '12/23/2000'and '1/19/2000' then 'Capricorn'
when @dob2 between '1/20/2000' and '2/19/2000' then 'Aquarius'
when @dob2 between '2/20/2000' and '3/20/2000'then 'Pisces' end


insert into @usernameTable
select @firstname+'_'+@lastname union
select @lastname+'_'+@firstname union
select @firstname+@lastname union
select @lastname+@firstname union
select left(@firstname,1)+@lastname union
select @username+'_'+@zipcode union
select 'reach'+'_'+@username union
select 'contact'+'_'+@username union
select 'reach'+'_'+@firstname union
select 'contact'+'_'+@lastname union
select 'reach'+'_'+@lastname union
select 'contact'+'_'+@firstname union
select 'reach'+@username union
select 'contact'+@username union
select 'reach'+@firstname union
select 'contact'+@lastname union
select 'reach'+@lastname union
select 'contact'+@firstname union
select left(@firstname,1)+@lastname+convert(varchar(4),year(@dob)) union
select @username+'_'+convert(varchar(4),year(@dob)) union
select @username+convert(varchar(4),year(@dob)) union
select @firstname+'_'+@zipcode union
select @lastname+'_'+@zipcode union
select 'Message_'+@username union
select @username+convert(varchar(8),@dob,112) union
select @Firstname+convert(varchar(8),@dob,112) union
select @Lastname+convert(varchar(8),@dob,112) union
select @Firstname+'_numberone' union
select @username+'_1' union
select @username+'_2' union
select @username+'_3' union
select @username+'_4' union
select @username+'_5' union
select @username+'_6' union
select @username+'_7' union
select @username+'_8' union
select @username+'_9' union
select @username+'1' union
select @username+'2' union
select @username+'3' union
select @username+'4' union
select @username+'5' union
select @username+'6' union
select @username+'7' union
select @username+'8' union
select @username+'9' union
select @zodiac+convert(varchar(8),@dob,112) union
select @zodiac+@zipcode union
select @zodiac+'_'+@firstname union
select @zodiac+'_'+@lastname union
select @firstname+'_'+@zodiac+'_'+@firstname union
select @lastname+'_'+@zodiac+'_'+@lastname union
select @firstname+right(convert(varchar(4),year(@dob)),2) union
select @lastname+right(convert(varchar(4),year(@dob)),2) union
select @username+right(convert(varchar(4),year(@dob)),2) union
select left(@firstname,1)+@lastname+right(convert(varchar(4),year(@dob)),2)

RETURN
end

go

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