如何使用 SQL select 语句实现此结果

Question

05214M  2   BRAKE PAD METAL EACH    1992    POLARIS 400 XC/ XCR 
05214M  2   BRAKE PAD METAL EACH    1991    POLARIS 400 XC/ XCR 

Hello given the data above I am trying to take all rows that have the same part number (05214M) and the same model (POLARIS 400 XC/ XCR) and create a title using the years and model.

So I want the title for this one to be

BRAKE PAD METAL POLARIS 400 XC/ XCR 1991-1992

Is this possible using SQL?

Answer 1

Use min max and group by

  select  model, concat( min(`year`) , '-', max(`year`))
  from  my_table 
  group by model

if you want a specific model you can use a where

  select  model, concat( min(`year`) , '-', max(`year`))
  from  my_table 
  where model = '05214M'
  group by model

If you want a different result for model with a single row and model with more then a rows you could use an union like this

  select  model, concat( min(`year`) , '-', max(`year`))
  from  my_table 
  group by model
  having count(*)>1 
  union 
  select  model, `year`
  from  my_table 
  group by model
  having count(*) = 1 

Answer 2

If for some reason you can't use a group by you can also do this with a windowing function like this:

SELECT model,
       CAST(min(year) over (partition by model order by year) as varchar(4)) + '-' +
       CAST(max(year) over (partition by model order by year) as varchar(4)) as Date_Range
FROM atable

Answer 3

use concat and group by

select concat(item,' ',model,' ',Min(year),'-',Max(year)) as title   
from Table_name   
group by sku;