Count for each account no -parent and childsql

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Count for each account no -parent and childsql

nutty

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Points: 483
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November 20, 2013 at 1:49 pm

#395869

Hi Guys
I have a data where there are parent and child product.
Each parent has got a unique code(P1) and a link code (L1) on their account
and each child of the parent has got a seperate code (C12) but they share the same account no.
I want to count the parent and children
Here is a sample dataset
Line_no code Account No
123 C12 Ac111
1222 C12 Ac111
1243 C12 Ac111
433 P1 Ac111
433 L1 Ac111
543 C1 Ac222
544 C1 Ac222
4322 P1 Ac222
4322 L1 Ac222
Now if I do a group by, I di get unique parents but not unique children
Please help!!

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Sean Lange SSC Guru Points: 286590 More actions · Answer 1

Hi and welcome to the forums. Since you are pretty new around here you have probably not seen the best practices article about how to post questions. You can find it at the first link in my signature.

Generally speaking it is best if you can post sample data in a consumable format. I did this for you.

create table #Something

(

Line_no int,

code varchar(5),

AccountNo char(5)

)

insert #Something

select 123, 'C12', 'Ac111' union all

select 1222, 'C12', 'Ac111' union all

select 1243, 'C12', 'Ac111' union all

select 433, 'P1', 'Ac111' union all

select 433, 'L1', 'Ac111' union all

select 543, 'C1', 'Ac222' union all

select 544, 'C1', 'Ac222' union all

select 4322, 'P1', 'Ac222' union all

select 4322, 'L1', 'Ac222'

select * from #Something

drop table #Something

So what would the desired output be based on this sample data? And what indicates a "Child"?

_______________________________________________________________

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nutty SSC-Addicted Points: 483 More actions · Answer 2

Hi

Apologies for not following the format. I will keep this in mind next time.

My desired output is

Parent_Count | Child_count

2 7

Thanks

Mita

Alan Burstein SSC Guru Points: 61141 More actions · Answer 3

Operating under the assumption that items beginning with L are children:

DECLARE @lines TABLE

(line_no int,

code varchar(3) not null,

account_no varchar(10) not null)

INSERT @lines

SELECT Line_no = 123, code = 'C12', Account_no = 'Ac111' UNION ALL

SELECT 1222, 'C12','Ac111'UNION ALL

SELECT 1243, 'C12','Ac111'UNION ALL

SELECT 433, 'P1','Ac111'UNION ALL

SELECT 433, 'L1','Ac111'UNION ALL

SELECT 543, 'C1','Ac222'UNION ALL

SELECT 544, 'C1','Ac222'UNION ALL

SELECT 4322, 'P1','Ac222'UNION ALL

SELECT 4322, 'L1','Ac222';

SELECT * FROM @lines;

WITH line_count AS

(SELECT code, account_no, CASE WHEN LEFT(code,1) ='P' THEN 'parrent' ELSE 'child' END pc

FROM @lines)

SELECT pc, count(pc) pc_count

FROM line_count

GROUP BY pc

"I cant stress enough the importance of switching from a sequential files mindset to set-based thinking. After you make the switch, you can spend your time tuning and optimizing your queries instead of maintaining lengthy, poor-performing code."

-- Itzik Ben-Gan 2001

Sean Lange SSC Guru Points: 286590 More actions · Answer 4

nutty (11/20/2013)
Hi
Apologies for not following the format. I will keep this in mind next time.
My desired output is
Parent_Count | Child_count
2 7
Thanks
Mita

something like this work?

create table #Something

(

Line_no int,

code varchar(5),

AccountNo char(5)

)

insert #Something

select 123, 'C12', 'Ac111' union all

select 1222, 'C12', 'Ac111' union all

select 1243, 'C12', 'Ac111' union all

select 433, 'P1', 'Ac111' union all

select 433, 'L1', 'Ac111' union all

select 543, 'C1', 'Ac222' union all

select 544, 'C1', 'Ac222' union all

select 4322, 'P1', 'Ac222' union all

select 4322, 'L1', 'Ac222'

select SUM(case when left(code, 1) = 'P' then 1 end) as Parent, SUM(case when left(code, 1) in ('C', 'L') then 1 end) as Parent

from #Something

drop table #Something

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

Sean Lange SSC Guru Points: 286590 More actions · Answer 5

Oops I didn't see Alan's fine post when I posted my last response. It seems very similar to mine. The main difference is the one I posted will return 2 columns and Alan's returns 2 rows. Pick which way you want the output since you have have two examples. 😀

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

nutty SSC-Addicted Points: 483 More actions · Answer 6

Thanks for this.

I am working in pl/sql and it says 'LEFT' as an invalid identifier

Sean Lange SSC Guru Points: 286590 More actions · Answer 7

nutty (11/20/2013)
Thanks for this.
I am working in pl/sql and it says 'LEFT' as an invalid identifier

I don't speak Oracle. This a sql server site so everything around here is sql server syntax. I am certain that oracle has something like left. substring maybe?

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

Jeff Moden SSC Guru Points: 1004366 More actions · Answer 8

nutty (11/20/2013)
Thanks for this.
I am working in pl/sql and it says 'LEFT' as an invalid identifier

Change the LEFT to a SUBSTRING starting at 1 with a length the same as what the original code has for LEFT.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

nutty SSC-Addicted Points: 483 More actions · Answer 9

Hi Alan

In your query you have not taken into account the code for child

I have a big dataset where we have multiple combination of parent and child codes

thanks

nutty SSC-Addicted Points: 483 More actions · Answer 10

Hi Sean

The child account does not have a link code. It only has the child code.

so if I use this query for the whole dataset by just filtering on child code, it gives me the count of all the child codes instead of count of child codes belonging ot a particular account.

I need to write a query which somehow ties the child accounts to their parent account using the common account no.

Does that make sense?

Jeff Moden SSC Guru Points: 1004366 More actions · Answer 11

nutty (11/20/2013)
Hi Guys
I have a data where there are parent and child product.
Each parent has got a unique code(P1) and a link code (L1) on their account
and each child of the parent has got a seperate code (C12) but they share the same account no.
I want to count the parent and children
Here is a sample dataset
Line_no code Account No
123 C12 Ac111
1222 C12 Ac111
1243 C12 Ac111
433 P1 Ac111
433 L1 Ac111
543 C1 Ac222
544 C1 Ac222
4322 P1 Ac222
4322 L1 Ac222
Now if I do a group by, I di get unique parents but not unique children
Please help!!

nutty (11/20/2013)
Hi
Apologies for not following the format. I will keep this in mind next time.
My desired output is
Parent_Count | Child_count
2 7
Thanks
Mita

nutty (11/20/2013)
Hi Sean
The child account does not have a link code. It only has the child code.
so if I use this query for the whole dataset by just filtering on child code, it gives me the count of all the child codes instead of count of child codes belonging ot a particular account.
I need to write a query which somehow ties the child accounts to their parent account using the common account no.
Does that make sense?

Yes but if you follow the progression of your posts, then "no". If you look at your first post and count all of the rows, you end up with 9 rows. 2 Parents and 7 "other" rows which include both Links (Lx rows) and Children (Cx rows). That happens to match exactly what you posted in the second quote above and Sean's code produces that output.

So my question is, according to the data in your original post, what should the output actually look like because, right now, I'm totally confused by your posts. 😉

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

nutty SSC-Addicted Points: 483 More actions · Answer 12

Yes it does match what I want as output.

However the trouble is, these child codes are common codes for various other parent codes.

For example two different parents can share the same child codes and I have to find out which child code belongs to which parent and the only way i can do is through the account no because account nos will be different for each set of parent and child.

Am I clear this time? sorry to confuse you

Sean Lange SSC Guru Points: 286590 More actions · Answer 13

nutty (11/21/2013)
Yes it does match what I want as output.
However the trouble is, these child codes are common codes for various other parent codes.
For example two different parents can share the same child codes and I have to find out which child code belongs to which parent and the only way i can do is through the account no because account nos will be different for each set of parent and child.
Am I clear this time? sorry to confuse you

So does the code I posted get you what you need or not? I am quite confused at this point.

_______________________________________________________________

Need help? Help us help you.

Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

Jeff Moden SSC Guru Points: 1004366 More actions · Answer 14

nutty (11/21/2013)
Yes it does match what I want as output.
However the trouble is, these child codes are common codes for various other parent codes.
For example two different parents can share the same child codes and I have to find out which child code belongs to which parent and the only way i can do is through the account no because account nos will be different for each set of parent and child.
Am I clear this time? sorry to confuse you

Ah. Understood. Add some data to the test data generation code on this thread and post it so folks can take a crack at it for you.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)