if not exists (select * from master.dbo.syslogins where loginname = N'eJadSPM_Db')
BEGIN
    declare @logindb nvarchar(132), @loginlang nvarchar(132) select @logindb = N'EJadSPM_Db', @loginlang = N'us_english'
    if @logindb is null or not exists (select * from master.dbo.sysdatabases where name = @logindb)
        select @logindb = N'master'
    if @loginlang is null or (not exists (select * from master.dbo.syslanguages where name = @loginlang) and @loginlang <> N'us_english')
        select @loginlang = @@language
    exec sp_addlogin N'eJadSPM_Db', N'DBPASSHERE', @logindb, @loginlang
END
GO