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Featured Database Articles

SQL Scripts & Samples

Posted Nov 30, 2009

Generate UserNames

By DatabaseJournal.com Staff



>>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


Disclaimer: We hope that the information on these script pages is valuable to you. Your use of the information contained in these pages, however, is at your sole risk. All information on these pages is provided "as -is", without any warranty, whether express or implied, of its accuracy, completeness, or fitness for a particular purpose... Disclaimer Continued


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