Generate a Composite ID for an entity – Mysql
I have an entity where I want to generate value like this. like this id tenant 1 1 2 1 3 1 1 2 2 2 3 2 1 3 2 3 3 3 Keep in mind that multiple instances…
Postgresql – One To Many relation spring boot, error relation "<xyz>" does not exist
I try to create a relation between two tables in a Spring Boot Application. I have the following Code: @Entity @Table(name = "account") @Getter @Setter @AllArgsConstructor @NoArgsConstructor @Builder public class Account { @Id @Column(name="ID", nullable = false, updatable = false)…
Postgresql natural sort with numbers first
In Postgres I need to sort text with natural order, but with one exception - if the string has only number, it should be placed at top. So I need such order: ["98", "125", "134", "148", "265", "634", "1233", "5231",…
Postgresql – Cascade Delete in JPA Failing
I am using Java, Spring and JPA and cannot get cascade deletion to work. I have a class Tenant that looks like this @Entity @Validated @Data @Builder @NoArgsConstructor @AllArgsConstructor @TenantConstraints public class Tenant { @Id @GeneratedValue(strategy = GenerationType.SEQUENCE, generator =…
Mysql – How to substrate number from the sum of columns of a table based on the id
I have a table named deposit, below dep_id deposit_amount comp_id 1 100 1 2 100 1 3 100 1 When I run the query below I get the next updated table which is not what I want : query =…
JpaRepository MySQL get the value of the string is null
In Service When I use print the keys that output null but print the ids that is correct please tell me why I'm sure the database has data orderBean @EntityListeners(AuditingEntityListener.class) @Entity @Table(name = "`Order`") public class OrderBean { @Id @GeneratedValue(strategy…
performance impact of bigint vs varchar in mysql query
Mysql giving bad performance while passing column value as bigint and column created with data type is varchar. Below is my create table query and index created on 3 columns(user_id,category,status). I am using spring jpa to interact with mysql and…
Mysql – Unable to join two table JPA
I have two table and I try to join use column idsubscriber but show some error. Class Subscriber: @Entity @Table(name = "subscriber") @XmlRootElement @NamedQueries({ @NamedQuery(name = "Subscriber.findAll", query = "SELECT s FROM Subscriber s") , @NamedQuery(name = "Subscriber.findById", query =…
How to get values from db with a given range coming as a list using postgresql and jpa
I have a requirement where in, the controller class receives a list as a request param. This list can contain a range of values, which is salary column in the table. ex: {500-10000 , 10000-12000, 12000-14000..} using this range of…
Postgresql – Search for multiple values in multiple columns in SQL
I have the following table in my database: firstName lastName Kalinda Hemms Karolyn Greenwood Aaron Walework Michel Jurka Now I want to create a query with multiple strings that should return only the records with that string. For example, searching…