Hibernate insert ignore

Hibernate insert ignore. Actually, it is default Hibernate behavior to only load the foreign key instead of the message object if the FetchType is LAZY. The foreign key is not visible directly, but it is of course the key of the object at the "one" end of the OneToMany Jun 3, 2020 · It seem Hibernate could batch insert, but the problem is Hibernate execute select nextval ('students_id_seq') multiple times. Also, generally speaking, ON DUPLICATE KEY UPDATE is much safer than INSERT IGNORE because the latter will ignore all errors, while the former will only ignore duplicate inserts. save(studentEntity) it always do select from parent class i. In my case I want to insert other four records which contains no errors. In MySQL 8. my DAO module is marked with @Transactional and @Repository annotations. 4. Jan 9, 2024 · In the test program, we are creating a class with a main () method for getting the Hibernate Session, and saving the model objects into the database implementing the one-to-many association: sessionFactory = HibernateAnnotationUtil. Hibernates concurrency control will increase the version number of an existing record when committing an update transaction, but only if the record in the database has still the same version number read when the Aug 3, 2021 · Hi i am creaeting rest api spring boot jpa &amp; mysql. OFF ). So, you just need to provide the mappings you want to Feb 5, 2019 · I'm trying to create some rules for my DB to prevent duplicate inserts, but since we're also hibernate, the . And jpa repositories save and saveAll will take this insert query in consideration. But if you find such an option, you can intercept the insert statement and add that yourself: Jan 8, 2024 · 1. ImprovedNamingStrategy”. That only requires 4 lines of code. 4 release notes states: SpringNamingStrategy is no longer used as Hibernate 5. So you could specify an association mapping in the entity layer and could perform a Hibernate batch insert or JDBC Batch update. These annotations are interpreted by the schema generation process, creating constraints automatically. To avoid this, you could catch the hibernate exception type which comes when you insert duplicate record , ignore the exception and go ahead. id. Aug 15, 2009 · To ignore a field, annotate it with @Transient so it will not be mapped by hibernate. These two settings default to true but can be set to false if we want to ensure that the provider will not insert or update information in the table in Jul 12, 2017 · And so if one of your entity has an ID field not null, Spring will make Hibernate do an update (and so a SELECT before). In the examples below, we’ll look at different ways of managing and bypassing this limitation. SQLServerException: The INSERT statement conflicted with the FOREIGN KEY constraint “FK_Child1_Parent”. To "fix" this, remove the referential integrity (the foreign key relationship) from the database. long start_time = System. Note: the line above will turn every logging off ( Level. Even though, when used on the JPA entity, both of them essentially prevent storing May 26, 2023 · 2. Logger. OR Mar 2, 2013 · In my code I am doing a batch insert. Sorted by: 0. By far, the easiest approach to adapt the value of an attribute before it gets persisted is to add the required code to the setter method. But keep in mind - while using PhysicalNamingStrategy without @Table, @Column annotations in the entity class, hibernate generates SQL using class name and variable names. However, as we’ll soon see, this isn’t entirely true. persist(post); }); Jan 13, 2024 · Photo by Mansi Gujarathi on Unsplash 1. If we didn’t want to include this field, we Nov 30, 2015 · Hibernate does not offer to add an option to its insert into statements. 1. ALL }) @JoinColumn(name = "Id") @NotFound(action=NotFoundAction. save () is called insert xxx RETURNING *. In my current project I'm currently using spring boot -> jpa stack and I have to process an import of a excel file that ends up into saving multiple entities into a database. NotNull; import lombok. Approach 2: Using Native SQl Query. find here some documentation. So you have a query like this: INSERT INTO (a, b, entity_field) SELECT t. How could I go about telling hibernate to ignore the createdAt field on insertion but not on retrieval? If this is impossible, how would you achieve an automatically generated timestamptz that you can still retrieve and display on the front end. May 9, 2016 · Otherwise, I use Hibernate Criteria to find the row by sometext. The conflict occurred in database “TestDB”, table “dbo. setLevel(Level. Then an ConstraintViolationException results. JPA allows us to define unique constraints in our code using @Column (unique=true) and @UniqueConstraint. We will configure our hibernate with hibernate. If we serialize this User object and pass it to another service in our system, the loginTime field will be included in the serialization. If I understand correctly, you would like to have a name property in your entity, but you would like this property to be non-persistent (i. currentTimeMillis(); Jan 8, 2011 · My question is about a query for url -> id function handling concurrency. PRE_UPDATE. This is why there are proxies to the objects to be loaded when you specify LAZY FetchType. user_id = users. Then hibernate prevent inserting all the rows. MySQL INSERT IGNORE example Sep 10, 2014 · As per hibernate documentation it says: 5. Then the Post subject: INSERT ON DUPLICATE IGNORE with hibernate. For an example think that I have five rows to insert, and one of those fails when inserting. public Step step1(){. I believe I found the root of the problem, what I believe is a limitation of hibernate, but a confirmation would be nice to ensure I’m not doing anything incorrectly. com Jan 11, 2023 · Hibernate can sort INSERT and UPDATE statements using the following configuration options: properties. Aug 3, 2022 · For that reason I check on update if entity persists in DB and make insert on negative case (and vice-versa: make update instead of insert if entity has already persisted) I face a UK_CONSTAINT_VIOLATION here because changes made by different threads seem to be cached and at the moment of commit, contains few insert statements with the same UK. 6. Aug 23, 2019 · I need to be able to use saveAll() method of a spring data CrudRepository and ignore duplicate insertion on a unique constraint. These exceptions mostly extend from HibernateException. 2, “INSERT ON DUPLICATE KEY UPDATE Statement” . In order to avoid a field from an entity to be persisted in DB one can use one of the two mechanisms: @Transient - the JPA annotation marking a field as not persistable. sqlserver. order_inserts", "true"); properties. This will make sure that an exception is raised in case a duplicate would be added. i tried googling everyone wrote the code in the same way. Jan 22, 2019 · Introduction As previously explained, the SINGLE_TABLE inheritance is the most efficient entity inheritance strategy. java. If you annotate your entity class with org. I'm developing an application in Spring Boot environment and I'm using Hibernate to persist data. Jul 6, 2023 · After the migration of my project from Spring Boot 2 to Spring Boot 3 and updating the hibernate version to 6. EmptyInterceptor and overwriting onPrepareStatement. Property mapping with hbm. Jun 24, 2021 · You will have to list out all columns in the order Hibernate expects it. , entity_field. But this comes with an overhead of one extra call to the database. 1 and later of Hibernate do not support the ignoreCase() method on Restriction. @Entity May 16, 2012 · 1 Answer. Jul 6, 2023 · After the migration of my project from spring boot 2 to spring boot 3 and updating the hibernate version to 6. A new SpringPhysicalNamingStrategy is now auto-configured which is used in combination with Hibernate’s default ImplicitNamingStrategy. Getter; import lombok Sep 1, 2014 · The problem with Hibernate currently is that it causes inconsistent data when persisting sub entities in a JOINED inheritance mapped with @DiscriminatorColumn, even though the JPA spec recommends to persist discriminator values if a discriminator is used with JOINED. If you are using Hibernate version 4. DTYPE by default): So, because we are filtering by the discriminator column, we might want to index it or include it to speed up queries. Instead of @sqlInsert I used namedjdbctemplate with SqlParameterSource and generated sql from reflection. Here’s the basic syntax of the INSERT IGNORE statement: INSERT IGNORE INTO table (column_list) VALUES (value_list), (value_list), ; Code language: SQL (Structured Query Language) (sql) Note that the IGNORE option is an extension of MySQL to the SQL standard. Important note: this property isn't ID! I don't want Jun 18, 2015 · Versions 4. SQLGrammarException: could not insert: [com. setTitle("High-Performance Java Persistence"); entityManager. Mar 9, 2019 · I'm not familiar with java or hibernate, hence my answer being a raw query. Final. persistence. formula (optional): an SQL expression that defines the value for a computed property. 3. I use EntityManager called in DAO module Mar 22, 2017 · An id column of type SERIAL which auto-increments when new rows are added. Source: Hibernate Annotations. SEQUENCE: _ when insert one entity, application Jan 17, 2023 · My problem is: when I want to create a new profile via . This works fine, except when there are two overlapping requests with the same sometext. eq(). jdbc. hibernate. SQLInsert you can override the insert generated by Hibernate. private java. Is this possible in Hibernate? Following is a simplified version of my code. It is not possible. Or you can create a custom query if making an extra call is crucial. An intermediate layer Sep 28, 2012 · All you can (and probably should) do in Hibernate or on the database level is to add a unique constraint to the field containing the site name. Apr 29, 2022 · EmployeeEntity is the owner of the relationship in a bi-directional relationship. xxx. Nov 16, 2009 · In my logging routine I want to insert the log info to a table in my database for further analysis. If you need help figuring out the exact syntax, this question might be a good resource for it. But when I began use hibernate I met the problem . Because it’s common to operate on entity graphs, JPA allows us to propagate entity state changes from Parents to Child entities. This behavior is configured through the . . Assuming we have persisted the following entity: doInJPA(entityManager -> { Post post = new Post(); post. parent -> parent. ejb. But I don't care about how long it takes for the insert to be done, so usually I would say INSERT LOW_PRIORITY INTO LogEntry (level, title, full) VALUES ('Info', 'Title here', 'Full log'); If I have an entity LogEntry, how do I write or wire up Jan 21, 2021 · com. Now, let’s start by defining a simple entity that we’ll use throughout this tutorial: @Entity public class Person {. Thanks for your help! Jan 8, 2024 · When we save this User object to the database using a JPA provider like Hibernate, the provider ignores the loginTime field because of the @Transient annotation. SQLSyntaxErrorException: user lacks privilege or object not found: AES_ENCRYPT So my question is, How can I tell hibernate to ignore this field from writing in certain databases. REMOVE, we have CascadeType. In JDBC implementation I do these steps: SELECT id WHERE md5=md5 (url); if exists, return id, else: INSERT IGNORE INTO urls (md5,url) VALUES (MD5 (url), url); retry step 1. Apr 10, 2015 at 13:05. All well. Spring Data JPA often updates or inserts all mapped attributes even though you only change or set Sep 10, 2014 · As per hibernate documentation it says: 5. Approach 1: As you are filtering the new records, the number of records will not be a constraint. assigned lets the application assign an identifier to the object before save() is called. 3. Mar 31, 2021 · Envers registers a set of event listeners that are triggered by Hibernates Event system. Is there something additional I need to do to suppress the foreign key for the bidirectional case? Mar 9, 2017 · Like Boden said, the answer is to add not-found="ignore" to the many-to-one statement in A. getSessionFactory(); session = sessionFactory. Id_team=t. After profiling i see that basically all my time is spent trying to save the data. The first technique is widely used and uses a foreign key column in one of the tables. left join login_history on login_history. You need to set updatable attribute of the @Column annotation to false: @Column(name = "USER_NAME", nullable = false, length = 75, updatable= false) private String userName; The updatable attribute instruct Hibernate to omit this column from the generated UPDATE SQL statement. Posted: Mon Mar 08, 2010 4:58 am . *; @Id @GeneratedValue(strategy=GenerationType. Jun 25, 2019 · Whenever i do studentRepo. Id_team. Hibernate seems to ignore the insertion of the discriminator value on creation. If dynamic-update set to true, then hibernate excludes unmodified properties in the Hibernate’s SQL update statement. fieldN. I have a table with an autoincrement column. By default, all statements are sent one after the other, each one in a separate network round-trip. Relational databases don’t have a straightforward way to map class hierarchies onto database tables. xml file exists in the META-INF directory and use it to override the mappings defined by the annotations. This answer comes a little late, but it completes the response. skipPolicy(new AlwaysSkipItemSkipPolicy()) in the step that is doing it after the writer . i want this to be automated as possible so i drop the database and schema and want spring to create all for me. public class EnumTypePostgreSql extends EnumType {. In order to implement conditional auditing ( see envers documentation ), you need to replace these listeners with your own implementation. In Class A: @ManyToOne @Cascade({ CascadeType. here is the code. getLogger("org. when you put in select field a not primitive type it's decomposite in all properties. What you could do though is generate the insert statement in a MetadataContributor for every PersistentClass you care about. However, for JPQL query such as this one: Hibernate generates a SQL query which filters by the associated discriminator column (e. SELECT Statement”, and Section 15. annotations. Overview. *; import jakarta. Link to Spring Data documentation. x and 5. POST_INSERT. validation. Share. Establishing entity relationships using JPA and Hibernate is relatively straightforward; anyone can work with annotations like @OneToOne Jan 8, 2024 · Hibernate Inheritance Mapping. But while updating the row, I want to update the row if any changes are there with the lastUpdateTime column. You can override this behavior by the 2 ways listed in the same documentation. please see below description coming from Hibernate document. As Spring Boot 1. It ensures that Hibernate uses only the modified columns in the SQL statement that it generates for the update of an Jan 8, 2024 · Persistence. Apr 26, 2022 · I get null for createdAt on database retrieval via hibernate. Cannot it happen in a single network call rather then hitting two calls first select from parent then insert. Computed properties do not have a column mapping of their own. By default, JPA and Hibernate check if an orm. Otherwise, I need to insert a new row. This way, we can optimize the network and memory usage of our application. I have designed a table (in postgres) where 'id' column is autoincremented via its SEQUENCE entity. Jan 12, 2013 · 1 Answer. when using the 5. IDENTITY) private Integer id; @Column(name="created_at") private java. It works nice even when requested url is inserted between steps 2 and 3. a, t. For the reasons for this, see Section 15. Nov 26, 2014 · I am using Sprint Boot, Sprint Data JPA, Hibernate 4 and MySQL. I'd need something like INSERT IGNORE or INSERT Jun 5, 2018 · To solve this problem, let edit the JPA configuration file to add a Hibernate property that allows us to ignore the case sensitive of the database system that we are running. However Nov 15, 2016 · In this example, we will show how to use hibernate to insert data into database. @DynamicUpdate is one such feature. IGNORE) private B b Aug 18, 2017 · How to use JPA Query to insert data into db? which uses nativeQuery=true; How to insert into db in spring-data? which suggests using built-in save method (there is also a saveAndFulsh() method) My example is below: Person is a simple Entity w/ 3 fields "Long id, String name, Integer age", and, maps to a corresponding Person table w/ 3 columns Jun 24, 2021 · 2 Answers. Doing this with annotation:. Either way, we have to use @OneToOne annotation. @Bean. Jan 11, 2023 · Introduction. Batching allows us to send a group of SQL statements to the database in a single network call. Level class for more levels). Edit: if bean is cached then get (object) will not be a performance hit. One of the options is, load the bean using get (object) method from the session and then set/change the values. In this article, we are going to learn how the JPA and Hibernate Cascade Types work. microsoft. JPA translates entity state transitions to database DML statements. x versions And when you install your application with a MySQL database, you need to override the generation strategy with an additional mapping file. From the excellent book Pro JPA 2 : JPA defines options to set individual mappings to be read-only using the insertable and updatable elements of the @Column and @JoinColumn annotations. Oct 7, 2014 · I have an entity with a property which I wish to be readonly - meaning that when I insert this entity to the DB, SqlServer will generate the property's value automatically so I need nhibernate to ignore this property when executing the INSERT command but retrieve it when selecting the entity. saveOrUpdate () that already has a profile validation attached, Hibernate tries to insert this profile validation, despite I marked the respective collection with @Transient: RmgtProfileValidationBVOImpl: @Transient. Table] at Caused by: java. 3, “INSERT DELAYED Statement” , Inserting into a table requires the INSERT privilege for the table. Apr 1, 2019 · you can create your own Interceptor by extending org. constraints. exception. That slows down all insert or update operations for objects of this entity class. e. Mar 20, 2014 · The unique constraint will prevent two threads to insert a record having the same values for a set (even only one) of columns. For that, we have to use ilike with MatchMode. naming_strategy” and its value is “org. In your batch process, you need to add. When we use Spring Data JPA with Hibernate, we can use the additional features of Hibernate as well. I’m encountering some problems with something that worked before. Apr 22, 2016 · 5. where users. And so if one of your entity has an ID field not null, Spring will make Hibernate do an update (and so a SELECT before). (Or check the java. DELETE, which is specific to Hibernate. In this tutorial, we’ll learn how we can batch insert and update entities using Hibernate/JPA. Jan 8, 2024 · At the table level, we can define unique constraints across multiple columns. EventType. Try this: SELECT * FROM Employee e, Team t WHERE e. if there's little to no columns in the entity, as long as one matches to the current If you want to map your enum to PostgreSQL’s enum type, you need to implement a custom mapping. If you were to take a look at the query built by Hibernate, it could look something like this (assuming the username being passed in is tpage ): select * from users. The SQL Server table I’m working with looks something like this: Jan 8, 2024 · Because of this automatic management, the only statements allowed by JPA are SELECT, UPDATE and DELETE. 25. Batching allows us to send multiple statements in one-shot, saving unnecessary socket stream flushing. Table definition: @Entity. To update only modified values Use dynamic-update option . 7. To generate a specific UPDATE or INSERT statement, Hibernate needs to detect which attributes have changed and generate a new SQL statement based on this information. Aug 6, 2021 · The only hang-up in this at the moment, is that Hibernate will throw a SQLException during hydration of a model entity, if it cannot find a matching column in the current ResultSet (funny enough, it doesn't seem to care about the other way around- i. Sorted by: 39. logging. faultTolerant() . x then the property is “hibernate. b, entity_field. Java Null. when in run the code i am getting the below exception. Defining a Common Model. sql. @Override. In this case: the transactions are managed by Spring automatically. Mar 10, 2011 · Hibernate may throw a ConstraintViolationException when you attempt to insert a row that breaks a constraint (including a unique constraint). CREATE TABLE test ( aaa int, bbb int); insert into test VALUES(1, 2); CREATE RULE "testRule1" AS ON INSERT TO test. And I don't know if the same option is available for MS SQL. I can insert new entities ok and the column auto-increments. Final, I'm encountering some problems with something that worked before. return name; The name property will of course be null for every instance loaded by Hibernate from the database. The dynamic-insert attribute tells Hibernate whether to include null properties in the SQL INSERT statement. xml. Hibernate is extensively used for persistence layer of building a enterprise application. getCurrentSession(); Jan 8, 2024 · As the name suggests, the remove operation removes the row corresponding to the entity from the database and also from the persistent context. See full list on howtodoinjava. SEVERE); that is silent enough. i guess something is missing in my code But despite NO_CONSTRAINT, Hibernate is still creating the foreign key constraint on child. Introduction. I am working on a latency sensitive part of an application, basically i will receive a network event transform the data and then insert all the data into the DB. 2. 1. Dec 6, 2017 · Viewed 2k times. xml and then we will create an example mapping with example Oct 11, 2016 · This way, Hibernate is going to ignore this attribute when translating the entity state modifications into an SQL statement. Jan 8, 2024 · 1. By default Spring Data JPA inspects the identifier property of the given entity. Show 3 more comments. Mar 23, 2018 · If it put @Transient annotation on Id field, it works well but I dont want to use @Transient annotation as it will ignore this field all together and I need to use it further in my use case. . But don’t worry, if you extend Hibernate’s EnumType, you just need to override 1 method to set the value as an object. user_id. completely ignored by Hibernate). All we have to do is to annotate the entity with @SQLInsert. Hibernate hides the database statements behind a transactional write-behind abstraction layer. Usually, this works and again, I'm done. just commit after the insert may not be enough, because, if you get the exception once, rest of the records wont be processed. If you want to be less strict, you can use. Feb 1, 2012 · java hibernate skip insert 'id' on insert. – Brel. REMOVE propagates the remove operation from parent to child entity. Jan 11, 2023 · Introduction JDBC has long been offering support for DML statement batching. It's a little tricky though because you have to use the binding parameters in exactly the same way Hibernate's usual insert would use them. The more I read about Hibernate, the less I like it. due creating the insert statement, it use the follow statement. This isn’t an introduction to Hibernate, and we should already know the basics of configuration, object-relational mapping, and working with entity Just commit after every insert. high performance hibernate insert. I can't seem to make the insert rule play well with the insert returning. @DynamicUpdate is a class-level annotation that can be applied to a JPA entity. Sep 29, 2018 · 1. setId(1L); post. 1 has removed support for the old NamingStrategy interface. I removed the @Transient and the @Id annotations. username = 'tpage'; This query returns multiple results (three results to be exact, in my database) as Oct 6, 2018 · Spring/Hibernate - Ignore Duplicate entry and continue to insert. When you do an INSERT you put only the primary key of your entity, so you can use only primitive type. for example , in my step , i've configured it like this. 2. Option 1: Customize your Setter Method. if there's little to no columns in the entity, as long as one matches to the current Feb 21, 2021 · I want to insert all List<Info> to the database and rollback if any errors (except for duplicate entry occurs), but even with a try/catch and the noRollbackFor configuration, the transaction is being rolledback, why? The not-found="ignore" thing means that when Hibernate issues a select with an ID and no row comes back, no exception will be thrown: you still can't put an arbitrary value into a column that has referential integrity. CascadeType. Oct 26, 2013 · Use Dynamic insert or dynamic-update. I saw other posts and came to know that updatable=false is the way to exclude update, but Detailed Answer. Beginner: Joined: Sun Jan 24, 2010 3:04 am Posts: 20 HI! Feb 18, 2015 · this tells Hibernate to generate SQL's as exactly as specified in the @Table (name=" ") or @Column(name=" "). g. The following event types trigger enver's listeners: EventType. I've a situation where I need to save or update user data but not want to include one field while fetching (lastUpdateTime). @Table(name = "example") Feb 12, 2015 · 36. Timestamp createdAt; // constructor, getters, and setters. Many conditions can cause exceptions to be thrown while using Hibernate. Hibernate is one of the few JPA (Java Persistence API) provider. Hibernate. Code sample : 6 days ago · Hibernate. Jan 25, 2019 · For better performance, I would prefer using JDBCBatchUpdate. cfg. In hibernate, there are primarily 3 ways to create one-to-one relationship s between two entities. In this tutorial, we’ll discuss the differences between several methods of the Session interface: save, persist, update, merge, saveOrUpdate, refresh, and replicate. Set<RmgtProfileValidationBVO> profileValidations; Feb 7, 2018 · Hibernate will use the identifier you assigned. put("hibernate. I use this in the following code snippet to trim leading and trailing whitespaces when setting the description attribute. If the identifier property is null, then the entity will be assumed as new, otherwise as not new. util. student. i am adding data into mysql u Dec 6, 2017 · Following field are need to be ignore for reading and same need to use for persistence, @Column (name="SCHEMA",columnDefinition="TEXT") private String SCHEMA;@Column (name="PROCESSORNAME",columnDefinition="TEXT") private String PROCESSORNAME;, since i am using single entity object for different data-source for reading and writing. Setup. If you don't get that exception, you may get some other general Hibernate exception - it depends on the version of Hibernate and the ability of Hibernate to map the MySQL exception to a Hibernate exception in the version and type of database you are Jan 18, 2018 · Cannot insert explicit value for identity column in table ‘Table_Name’ when IDENTITY_INSERT is set to OFF. Example: import jakarta. Aug 23, 2013 · 1. You can do it without having to create a real Hibernate mapping. 0, the DELAYED keyword is accepted but ignored by the server. order_updates", "true"); While the Post and Comment INSERT statements are batched accordingly, the UPDATE statements are still executed separately: Jan 4, 2022 · Adding a custom insert query is very easy to do in Spring Data JPA. Nov 22, 2008 · before hibernate's initialization worked for me. An easy way is it to make your Entity implement Persistable (instead of Serializable), which will make you implement the method "isNew". Sometimes though I want to specify the ID when doing an insert but Hibernate appears to ignore any ID value I set. hibernate"). Similar to JPA’s CascadeType. Parent”, column ‘id’. Hibernate Exception Overview. A created_at column of type TIMESTAMP which defaults to now () import javax. POST_UPDATE. At first glance, it may seem like both the @NotNull and @Column (nullable = false) annotations serve the same purpose and can be used interchangeably. I've tried to set insertable=false but it dont work either. field2,. field1, entity_field. Class table then if the data exists in the parent table then it do insert in child table i. Final while the same code is working fine with 5. These can be mapping errors, infrastructure problems, SQL errors, data integrity violations, session problems, and transaction errors. Some statistics: In conclusion, If using GenerationType. All I want to do is to ignore this field during insert. Jul 21, 2016 · I am new to Hibernate i am trying to insert data into a table using hql. This behavior is configured through the According to this question: Hibernate can join entities that don't have an association in the mapping. So the property with Formula cannot have a column mapping in DB table. Dec 12, 2016 · Caused by: org. To address this, the JPA specification provides several strategies: Single Table – The entities from different classes with a common ancestor are placed in a single table. below is the code. Example: Aug 5, 2022 · JPA will use all properties of the class, unless you specifically mark them with @Transient: @Transient private String agencyName; The @Column annotation is purely optional, and is there to let you override the auto-generated column name. If an entity list has 30 items, Hibernate execute select nextval 30 times, and 3 times for batch insert query. kc kv qg qf bt cs tl ca cu nf