Complicated TSQL custom ranking task - sql

Question

I have tried a whole lot of variety of ranking solutions with joins and all to match the needs I want.
Sadly, I cannot come up with correct query to get the desired output.
I am really looking for any help to get explanation that would help me in future with these sort of tasks.
I have the following CTE table contains data values set:
type model price code
Shoes 1298 700,00 1
Shoes 1298 950,00 6
Shoes 1298 1050,00 4
Shoes 1321 970,00 2
Shoes 1750 1200,00 3
Shoes 1752 1150,00 5
Pants 1121 850,00 2
Pants 1121 850,00 4
Pants 1121 850,00 5
Pants 1232 350,00 8
Pants 1232 350,00 9
Pants 1232 400,00 7
Pants 1232 600,00 1
Pants 1233 600,00 3
Pants 1233 950,00 6
Pants 1233 970,00 12
Pants 1233 980,00 11
Pants 1260 350,00 10
Hats 1276 400,00 1
Hats 1288 400,00 6
Hats 1401 150,00 4
Hats 1408 270,00 5
Hats 1433 270,00 2
Hats 1434 290,00 3
Unified records numbering of CTE have to be done in the following manner: first there are the first models of the tables (Shoes, Pants and Hats), then the last models, after that - the second models in the tables, the penultimate, etc. In the case of exhaustion of the models of a particular type, number only remaining models of other types.
Here is the desired output:
Id type model price code
1 Shoes 1298 700.0000 1
2 Pants 1232 600.0000 1
3 Hats 1276 400.0000 1
4 Shoes 1298 950.0000 6
5 Pants 1233 970.0000 12
6 Hats 1288 400.0000 6
7 Shoes 1321 970.0000 2
8 Pants 1121 850.0000 2
9 Hats 1433 270.0000 2
10 Shoes 1752 1150.0000 5
11 Pants 1233 980.0000 11
12 Hats 1408 270.0000 5
13 Shoes 1750 1200.0000 3
14 Pants 1233 600.0000 3
15 Hats 1434 290.0000 3
16 Shoes 1298 1050.0000 4
17 Pants 1260 350.0000 10
18 Hats 1401 150.0000 4
19 Pants 1121 850.0000 4
20 Pants 1232 350.0000 9
21 Pants 1121 850.0000 5
22 Pants 1232 350.0000 8
23 Pants 1233 950.0000 6
24 Pants 1232 400.0000 7
I have updated the desired output (added code column) to better understand the sorting idea. It has to be done in interleaved manner with first coded numbers(i.e. lowest code) of types goes first then the last coded numbers(i.e. highest code) of types goes second, then first coded who's left goes first and then the last coded who's left and etc.

Answer 1

I can not really understand the ordering behind the scene, because the result set is not ordered nor by model nor by code, but here is the idea and you can play with orderings in CTEs:
WITH cte1 AS ( SELECT * ,
ROW_NUMBER() OVER (PARTITION BY type ORDER BY model, code) rn1
FROM #t),
cte2 AS ( SELECT * ,
ROW_NUMBER() OVER (PARTITION BY rn1 ORDER BY
CASE type WHEN 'Shoes' THEN 1
WHEN 'Pants' THEN 2
WHEN 'Hats' THEN 3 END) rn2
FROM cte1 )
SELECT * ,
ROW_NUMBER() OVER (ORDER BY rn1, rn2) rn
FROM cte2
Output:
type model price code rn1 rn2 rn
Shoes 1298 700.00 1 1 1 1
Pants 1121 850.00 2 1 2 2
Hats 1276 400.00 1 1 3 3
Shoes 1298 1050.00 4 2 1 4
Pants 1121 850.00 4 2 2 5
Hats 1288 400.00 6 2 3 6
Shoes 1298 950.00 6 3 1 7
Pants 1121 850.00 5 3 2 8
Hats 1401 150.00 4 3 3 9
Shoes 1321 970.00 2 4 1 10
Pants 1232 600.00 1 4 2 11
Hats 1408 270.00 5 4 3 12
Shoes 1750 1200.00 3 5 1 13
Pants 1232 400.00 7 5 2 14
Hats 1433 270.00 2 5 3 15
Shoes 1752 1150.00 5 6 1 16
Pants 1232 350.00 8 6 2 17
Hats 1434 290.00 3 6 3 18
Pants 1232 350.00 9 7 1 19
Pants 1233 600.00 3 8 1 20
Pants 1233 950.00 6 9 1 21
Pants 1233 980.00 11 10 1 22
Pants 1233 970.00 12 11 1 23
Pants 1260 350.00 10 12 1 24
Rn contains desired values.

Answer 2

You want the value interleaved. Here is how you can do this:
with cte as ( . . . )
select row_number() over (order by seqnum, charindex(type, 'ShoesPantsHats')) as id,
t.*
from (select cte.*,
row_number() over (partition by type order by (select NULL)) as seqnum
from cte
) t
order by seqnum,
charindex(type, 'ShoesPantsHats');
Note the order by clause for row_number(). SQL tables are inherently unordered, and if you care about the ordering of the results within each type, then put the appropriate logic there.

Answer 3

Try this,
with cte as (select type, model,price, ROW_NUMBER() over (partition by type order by type) as rowid from temp)
select * from cte order by rowid, type