[英]Count rows each month of a year - SQL Server
I have a table " Product " as : 我有一个表“ Product ”为:
| ProductId | ProductCatId | Price | Date | Deadline |
--------------------------------------------------------------------
| 1 | 1 | 10.00 | 2016-01-01 | 2016-01-27 |
| 2 | 2 | 10.00 | 2016-02-01 | 2016-02-27 |
| 3 | 3 | 10.00 | 2016-03-01 | 2016-03-27 |
| 4 | 1 | 10.00 | 2016-04-01 | 2016-04-27 |
| 5 | 3 | 10.00 | 2016-05-01 | 2016-05-27 |
| 6 | 3 | 10.00 | 2016-06-01 | 2016-06-27 |
| 7 | 1 | 20.00 | 2016-01-01 | 2016-01-27 |
| 8 | 2 | 30.00 | 2016-02-01 | 2016-02-27 |
| 9 | 1 | 40.00 | 2016-03-01 | 2016-03-27 |
| 10 | 4 | 15.00 | 2016-04-01 | 2016-04-27 |
| 11 | 1 | 25.00 | 2016-05-01 | 2016-05-27 |
| 12 | 5 | 55.00 | 2016-06-01 | 2016-06-27 |
| 13 | 5 | 55.00 | 2016-06-01 | 2016-01-27 |
| 14 | 5 | 55.00 | 2016-06-01 | 2016-02-27 |
| 15 | 5 | 55.00 | 2016-06-01 | 2016-03-27 |
I want to create SP count rows of Product each month with condition Year = CurrentYear , like : 我想每月以条件Year = CurrentYear创建产品的SP计数行,例如:
| Month| SumProducts | SumExpiredProducts |
-------------------------------------------
| 1 | 3 | 3 |
| 2 | 3 | 3 |
| 3 | 3 | 3 |
| 4 | 2 | 2 |
| 5 | 2 | 2 |
| 6 | 2 | 2 |
What should i do ? 我该怎么办 ?
You can use a query like the following: 您可以使用如下查询:
SELECT MONTH([Date]),
COUNT(*) AS SumProducts ,
COUNT(CASE WHEN [Date] > Deadline THEN 1 END) AS SumExpiredProducts
FROM mytable
WHERE YEAR([Date]) = YEAR(GETDATE())
GROUP BY MONTH([Date])
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