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+---
+title: MySQL 주별 통계 WEEK
+author: dejavuhyo
+date: 2024-11-18 10:20:00 +0900
+categories: [Database, MySQL]
+tags: [mysql-week, week, mysql-주별-통계, 주별-통계]
+---
+
+## 1. 주별 통계
+WEEK 함수를 이용한다.
+
+### 1) `ECOLI_DATA` 테이블
+
+| ID | SIZE_OF_COLONY | DIFFERENTIATION_DATE |
+|:-----:|:-----:|:-----:|
+| 1 | 10 | 2019/01/01 |
+| 2 | 2 | 2019/05/01 |
+| 3 | 100 | 2020/01/01 |
+| 4 | 17 | 2022/04/01 |
+| 5 | 10 | 2020/09/01 |
+| 6 | 101 | 2021/12/01 |
+
+### 2) SQL
+
+```sql
+select CONCAT(WEEK(DIFFERENTIATION_DATE, 7), 'W') as WEEK
+     , COUNT(SUB_CD)                              as ECOLI_COUNT
+from ECOLI_DATA
+group by WEEK(DIFFERENTIATION_DATE)
+```
+
+## [출처 및 참고]
+* [https://soobindeveloper8.tistory.com/932](https://soobindeveloper8.tistory.com/932)