I’m building a SpringBoot application with spring-data-jpa. I know how to log all sqls from this question. How to print a query string with parameter values when using Hibernate But what if I only want to log failed sqls? Answer There are two options: Configure sql logging with parameter values. Disable…
Tag: hibernate
@Where with @SecondaryTable does not work with Hibernate
There is a one-to-many relationship in my model, where the child entity is stored in two tables. @Entity @Table(name = “child1”) @SecondaryTable(name = “child2”, pkJoinColumns = { @…
how to fetch data from two tables in JPA
I am not able to fetch all records from two tables using the below query I have tried this but I am getting a result from one table only. I want a result of both the tables i.e, …
How does Hibernate do row version check for Optimistic Locking before committing the transaction
When before committing the current transaction hibernate checks the version of the row, it should issue an sql select statement for fetching ithe row. Assume that after issuing that select statement hibernate finds out that the row version is not changed, hence it should proceed with committing the transactio…
How should I pass values into JPQL query?
I’m working on test, that will check if object had been saved into database. Test will save object with unique values and after that I want to fetch this object from database and check if it is not …
Hibernate not allowing to increment by 5 in sequence
I have following db sequence Java However with Hibernate I am getting following error which says hibernate is expecting increment by 50. Why is so? Edit1 Added java code. Answer The error message is quite clear. You have enabled (or not disabled) schema validation, so when the application starts Hibernate is …
Release of a SELECT… FOR UPDATE lock
My question is very simple: what is the inverse SQL statement for SELECT ID FROM TABLE FOR UPDATE NOWAIT? How do I release a lock during the same transaction that acquired it before committing? Expanding: I am writing portable API code that leverages Hibernate to apply row-level locks to entities. The followi…
MSSql server jpa spatial exception
Is it possible to use sql spatial data in jpa? I ve MS SQL Server 2014 Express Edition. I m trying to use spatial data as follows; maven (pom.xml) dependencies; db dialect; spring.jpa.hibernate.dialect=org.hibernate.spatial.dialect.sqlserver.SqlServer2008SpatialDialect entity definition; @Column(columnDefinit…
Getting column names from a JPA Native Query
I have an administrative console in my web application that allows an admin to perform a custom SQL SELECT query on our database. Underneath, the application is using Hibernate, but these queries are …
insert if not exists in HQL
I am trying to write a query in HQL which can insert a record if it does not exists (with same name) so that there is no duplicate insertion when done from multiple threads. However, the record is not inserted. I suspect this is because the table is empty and the subquery returns 0 records despite the NOT EXI…