如何在 SQL 中进行 pivot 类型计算？

Question

I have Ship fiscal week numbers from 2015 year until 2099( infinite),invoice dates, product and Amount. How can I calculate this in sql? We can only charge the user when we ship them and on unique invoice only. So how can I add Unique Invoice +Product + Ship Fiscal Week # + Amount.

My data looks like this:

Ship fiscal Week | Year | Invoice Date   |Product | Amount
     12          | 2015 | 5/1/2015       | A      |112
     12          | 2015 | 5/1/2015       | A      |112
     1           | 2015 | 5/2/2015       | B      |115
     52          | 2018 | 5/3/2018       | A      |20000
     11          | 2019 | 1/6/2019       | C      |1123333
     23          | 2019 | 7/6/2019       | A      |112888889

I will want to pick unique invoice date + Ship Fiscal week + unique Year + Product + Amount .

Please help me.

Answer 1

You can always use DISTINCT in order to get unique values.

If you need something else, please be more clear. It is difficult to understand your question.

Try this:

SELECT year, ship_fiscal_week, product, SUM(amount) AS total_amount, SUM(amount) OVER(PARTITION BY Product)
FROM table
GROUP BY ship_fiscal_week, year, product
ORDER BY product, year, week

Answer 2

Are you looking for aggregation?

SELECT ship_fiscal_week, year, invoice_date, product, SUM(amount) total_amount
FROM mytable
GROUP BY ship_fiscal_week, year, invoice_date, product

Answer 3

I guess you just need to remove the duplicate data first and then wants the sum -

SELECT ship_fiscal_week, year, product, SUM(amount) total_amount
FROM (SELECT DISTINCT ship_fiscal_week, year, product, amount
      FROM YOUR_TABLE)
GROUP BY ship_fiscal_week, year, product