简体繁体 English

我应该使用mySQL表视图还是Spring Data JPA投影？

[英]Should I use mySQL Table Views or Spring Data JPA projections?

原文 2018-07-23 18:10:45 4 1 java/ spring-data-jpa

I have a mySQL relational database with football statistics that contains a table matches. 我有一个带橄榄球统计信息的mySQL关系数据库，其中包含一个表匹配项。 I created a method in my Spring project to build a standings table. 我在Spring项目中创建了一个方法来构建排行榜。 This method uses a projection because I need each match object to include the two team objects. 此方法使用投影，因为我需要每个比赛对象都包括两个团队对象。 This response (get all matches + get the two teams in each match) takes around 7 seconds. 此响应（获取所有比赛+在每场比赛中获得两支球队）大约需要7秒钟。

The same information but within a View in my database takes 0.231 seconds. 相同的信息但是在我数据库的视图中需要0.231秒。

I'm very new to Spring Data so my question is. 我是Spring Data的新手，所以我的问题是。 Should I use table views when I need to join tables? 需要联接表时应该使用表视图吗？ Is there any advice against doing so? 是否有反对这样做的建议？

1 个解决方案

I don't see any problem with using table views. 使用表格视图没有任何问题。 You can map to them with JPA @Table annotation. 您可以使用JPA @Table注释映射到它们。

The only potential problem is when migrating databases (you will have to make sure Views are migrated correctly). 唯一的潜在问题是在迁移数据库时（您必须确保正确迁移了View）。

Hope this helps. 希望这可以帮助。

如何在 spring-data-jpa 中使用投影？ - How use projections in spring-data-jpa?

Spring Data JPA在mysql视图上支持PagingandSorting吗？ - Spring data jpa supports PagingandSorting on mysql views?

如何在 Spring Data JPA 投影中处理 nullPointer - How to handle nullPointer in Spring Data JPA projections

在Spring Data JPA中使用投影字段错误 - Using Projections in Spring Data JPA field error

Spring 数据 jpa 表视图之间的操作 - Spring data jpa operation between table views

我使用Spring Data JPA在MySQL中创建表，但创建失败 - I used Spring Data JPA to create a table in MySQL, but the creation failed

在某些情况下，有没有办法使用 Spring 数据 JPA 投影来避免 @SecondaryTable 上的连接？ - Is there a way to use Spring Data JPA Projections to avoid the join on a @SecondaryTable in some cases?

Spring JPA / Hibernate：在同一查询界面上使用多个投影 - Spring JPA/Hibernate: use multiple projections on same query interface

Spring Data JPA - 通过定义投影加入不相关的实体 - Spring Data JPA - Join unrelated entities by defining projections

Spring 数据 JPA 本机查询不遵循投影的命名约定 - Spring Data JPA native query does not follow naming convention with projections

暂无

暂无

声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

相关问题 如何在 spring-data-jpa 中使用投影？ - How use projections in spring-data-jpa? Spring Data JPA在mysql视图上支持PagingandSorting吗？ - Spring data jpa supports PagingandSorting on mysql views? 如何在 Spring Data JPA 投影中处理 nullPointer - How to handle nullPointer in Spring Data JPA projections 在Spring Data JPA中使用投影字段错误 - Using Projections in Spring Data JPA field error Spring 数据 jpa 表视图之间的操作 - Spring data jpa operation between table views 我使用Spring Data JPA在MySQL中创建表，但创建失败 - I used Spring Data JPA to create a table in MySQL, but the creation failed 在某些情况下，有没有办法使用 Spring 数据 JPA 投影来避免 @SecondaryTable 上的连接？ - Is there a way to use Spring Data JPA Projections to avoid the join on a @SecondaryTable in some cases? Spring JPA / Hibernate：在同一查询界面上使用多个投影 - Spring JPA/Hibernate: use multiple projections on same query interface Spring Data JPA - 通过定义投影加入不相关的实体 - Spring Data JPA - Join unrelated entities by defining projections Spring 数据 JPA 本机查询不遵循投影的命名约定 - Spring Data JPA native query does not follow naming convention with projections

相关标签

粤ICP备18138465号 © 2020-2024 STACKOOM.COM