sorting table while inserting

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Oonz - 29 May 2007 17:04 GMT

Hi Friends,

How can we insert records in sorted order

like consider a table

No Name Phone
1 test1    12345
1 test1    23455
2 test2    68638
3 test3    67684
4 test4    54808
4 test4    74594

if i add a new record like this

2 test2    34454

it should go in specific order. so that the final table should look
something like this

No Name Phone
1 test1    12345
1 test1    23455
2 test2    34454
2 test2    68638
3 test3    67684
4 test4    54808
4 test4    74594

Reply to this Message

Jason Lepack - 29 May 2007 17:19 GMT

Tables don't store data in a logical order. They store data in a
physical order. If you want to see data in an ordered fashion then
create a view to do that. Also, Name is a reserved word, don't use
it...

SELECT
No,
NameField,
Phone
FROM
yourTable
ORDER BY
No, NameField, Phone

Cheers,
Jason Lepack

> Hi Friends,
>
[quoted text clipped - 25 lines]
> 4 test4 54808
> 4 test4 74594

Reply to this Message

Oonz - 29 May 2007 17:24 GMT

> Tables don't store data in a logical order. They store data in a
> physical order. If you want to see data in an ordered fashion then
[quoted text clipped - 44 lines]
>
> - Show quoted text -

But actually i want to do further processing with that sorted table.
Thats why i am in need of such structure

Thanks
Arunkumar.D

Reply to this Message

Jason Lepack - 29 May 2007 17:27 GMT

What exactly do you want to do? Maybe there is a better way of doing
it that you haven't come across.

Give a little more detail and more help can be given.

Cheers,
Jason Lepack

> > Tables don't store data in a logical order. They store data in a
> > physical order. If you want to see data in an ordered fashion then
[quoted text clipped - 52 lines]
>
> - Show quoted text -

Reply to this Message

Ed Murphy - 29 May 2007 17:41 GMT

> What exactly do you want to do? Maybe there is a better way of doing
> it that you haven't come across.

More specifically, it sounds like he (like many others) is stuck on
procedural rather than functional thinking. Beware the frumious CURSOR!

> Give a little more detail and more help can be given.

Agreed.

Reply to this Message

Oonz - 29 May 2007 17:42 GMT

> What exactly do you want to do? Maybe there is a better way of doing
> it that you haven't come across.
[quoted text clipped - 62 lines]
>
> - Show quoted text -

Actually i will combine the multiple numbers into one single record

the temporary table structure would be like this

No Name Phone FinalPhone
1 test1 12345 12345
1 test1 23455 12345 23455
2 test2 68638 68638
2 test2 34454 68638 34454 
2 test2 45445 68638 34454 45445
3 test3 67684 67684
4 test4 54808 54808
4 test4 74594 54808 74594

and by using GROUP BY clause i would select single record having all
the
information

No Name FinalPhone
1 test1 12345 23455
2 test2 68638 34454 45445
3 test3 67684
4 test4 54808 74594

this view would be sent to UI for display...

Thanks
Arunkumar.D

Reply to this Message

Ed Murphy - 29 May 2007 18:51 GMT

> Actually i will combine the multiple numbers into one single record
>
[quoted text clipped - 9 lines]
> 4 test4 54808 54808
> 4 test4 74594 54808 74594

Add a DateInserted column, and use it in sorting.

If you delete the row with Phone = 34454, do you want to have to also
update the row with 45445 so that FinalPhone = 68638 45445? Of
course not - that would be a maintenance nightmare. Move FinalPhone
from the database to the UI layer, or at least from the table to a view.

Reply to this Message

Jason Lepack - 29 May 2007 19:01 GMT

I created two tables and a trigger and I have all the functionality
that you wanted, without having to create a cursor. The key is to let
the database do the work and this way, any record that validly gets
inserted into the phone_numbers table automatically gets put into the
phone_output list.

If you expect to be deleting or modifying records from the
phone_numbers table then you will need to add update and delete
triggers. (Note: for delete, use the replace function)

If you need more help, just post back.

Cheers,
Jason Lepack

Try this:

-- Begin SQL
CREATE TABLE [dbo].[phone_numbers](
 [num] [int] NOT NULL,
 [phone_name] [varchar](50) NOT NULL,
 [phone] [varchar](50) NOT NULL
) ON [PRIMARY]
GO

CREATE UNIQUE NONCLUSTERED INDEX [nat_key] ON [dbo].[phone_numbers]
(
 [num] ASC,
 [phone] ASC
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[phone_output](
 [num] [int] NOT NULL,
 [phone_name] [nvarchar](50) NOT NULL,
 [final_phone] [varchar](max) NULL
) ON [PRIMARY]
GO

CREATE TRIGGER [dbo].[update_final_phone]
ON dbo.phone_numbers
AFTER INSERT
AS
BEGIN
 insert into
 phone_output(num, phone_name)
 select distinct
 i.num,
 i.phone_name
 from
 inserted i
 left outer join phone_output p
 on i.num = p.num
 where
 p.num is null

 update
 phone_output
 set
 final_phone = coalesce(final_phone + ' ','') + phone
 from
 inserted i
 where
 phone_output.num = i.num
END
GO

insert into phone_numbers (num,phone_name,phone) values
(1,'test1','12345')
insert into phone_numbers (num,phone_name,phone) values
(1,'test1','23455')
insert into phone_numbers (num,phone_name,phone) values
(2,'test2','68638')
insert into phone_numbers (num,phone_name,phone) values
(3,'test3','67684')
insert into phone_numbers (num,phone_name,phone) values
(4,'test4','54808')
insert into phone_numbers (num,phone_name,phone) values
(4,'test4','74594')
go

select * from phone_numbers
select * from phone_output
-- End SQL

> > What exactly do you want to do? Maybe there is a better way of doing
> > it that you haven't come across.
[quoted text clipped - 93 lines]
>
> - Show quoted text -

Reply to this Message

Jason Lepack - 30 May 2007 14:33 GMT

I created delete and update triggers... here's the complete ddl.

CREATE TABLE [dbo].[phone_numbers](
[num] [int] NOT NULL,
[phone_name] [varchar](50) NOT NULL,
[phone] [varchar](50) NOT NULL
) ON [PRIMARY]
GO

CREATE UNIQUE NONCLUSTERED INDEX [nat_key] ON [dbo].[phone_numbers]
(
[num] ASC,
[phone] ASC
) ON [PRIMARY]
GO

CREATE TABLE [dbo].[phone_output](
[num] [int] NOT NULL,
[phone_name] [nvarchar](50) NOT NULL,
[final_phone] [varchar](max) NULL
) ON [PRIMARY]
GO

CREATE TRIGGER [dbo].[insert_final_phone]
ON dbo.phone_numbers
AFTER INSERT
AS
BEGIN
insert into
phone_output(num, phone_name)
select distinct
i.num,
i.phone_name
from
inserted i
left outer join phone_output p
on i.num = p.num
where
p.num is null

update
phone_output
set
final_phone = coalesce(final_phone + ' ','') +
phone
from
inserted i
where
phone_output.num = i.num
END
GO

CREATE TRIGGER [dbo].[delete_final_phone]
ON dbo.phone_numbers
AFTER DELETE
AS
BEGIN
update
phone_output
set
final_phone = replace(final_phone, d.phone+' ', '')
from
deleted d
where
phone_output.num = d.num

 update
phone_output
set
final_phone = replace(final_phone, d.phone, '')
from
deleted d
where
phone_output.num = d.num

 delete phone_output
where final_phone = ''
END
GO

CREATE TRIGGER [dbo].[update_final_phone]
ON dbo.phone_numbers
AFTER UPDATE
AS
BEGIN
update
phone_output
set
final_phone = replace(final_phone, d.phone+' ', '')
from
deleted d
where
phone_output.num = d.num

 update
phone_output
set
final_phone = replace(final_phone, d.phone, '')
from
deleted d
where
phone_output.num = d.num

 delete phone_output
where final_phone = ''

 insert into
phone_output(num, phone_name)
select distinct
i.num,
i.phone_name
from
inserted i
left outer join phone_output p
on i.num = p.num
where
p.num is null

update
phone_output
set
final_phone = coalesce(final_phone + ' ','') +
phone
from
inserted i
where
phone_output.num = i.num
END
GO

insert into phone_numbers (num,phone_name,phone) values
(1,'test1','12345')
insert into phone_numbers (num,phone_name,phone) values
(1,'test1','23455')
insert into phone_numbers (num,phone_name,phone) values
(1,'test1','68638')
insert into phone_numbers (num,phone_name,phone) values
(3,'test3','67684')
insert into phone_numbers (num,phone_name,phone) values
(4,'test4','54808')
insert into phone_numbers (num,phone_name,phone) values
(4,'test4','74594')
go

delete phone_numbers where num = 1 and phone = '23455'
delete phone_numbers where num = 3
go

update phone_numbers set num = 2 where phone = '54808'
update phone_numbers set phone = '7686' where phone = '12345'
go

> I created two tables and a trigger and I have all the functionality
> that you wanted, without having to create a cursor. The key is to let
[quoted text clipped - 180 lines]
>
> - Show quoted text -

Reply to this Message

Erland Sommarskog - 29 May 2007 22:26 GMT

> Actually i will combine the multiple numbers into one single record
>
[quoted text clipped - 20 lines]
>
> this view would be sent to UI for display...

GROUP BY is not your guy, in this case. See this link for some ideas on
to produce concatenated lists:
http://www.projectdmx.com/tsql/rowconcatenate.aspx

Signature

Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

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