✨ Feature: DB 마이그레이션을 위한 flyway 도입 (#201)

* ➕ Chore: Flyway 의존성 추가

* 🔧 Chore: application.yml flyway 설정

git status

* ✨ Feat: DB 마이그레이션 스크립트 작성

* 🗃️ Feat: 스크립트 수정

core/Briefing-Common/build.gradle

@@ -21,6 +21,10 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-data-redis:2.3.1.RELEASE'
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-validation'
+
+    // Flyway
+    implementation 'org.flywaydb:flyway-core'
+    implementation 'org.flywaydb:flyway-mysql'
 }
 
 tasks.named('test') {

core/Briefing-Common/src/main/resources/application.yml

@@ -0,0 +1,9 @@
+spring:
+  flyway:
+    enabled: true
+    baseline-on-migrate: true
+    baseline-version: 0
+
+  jpa:
+    hibernate:
+      ddl-auto: update

core/Briefing-Common/src/main/resources/db/migration/V1__change_NN_to_N1_relationship.sql

@@ -0,0 +1,3 @@
+UPDATE article a
+JOIN briefing_article ba ON a.id = ba.article_id
+SET a.briefing_id = ba.briefing_id;