Java org.postgresql.util.psqleexception:ERROR:syntax ERROR on或near"；会话“用户”；

我正在尝试使用IntelliJ IDEA中的Hibernate、JPA和Spring Boot创建实体，所有实体都已成功创建，但有一个实体由于此错误而未创建。它说有一个语法错误，但我在这里看不到任何语法错误

此my session_用户实体：

@Entity
@Table(name = "Session_user")
public class Session_user implements Serializable {

@Id @GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer session_id;

@ManyToOne(fetch = FetchType.LAZY,targetEntity = Ad_user.class)
@JoinColumn(name = "user_id",referencedColumnName = "user_id")
private Ad_user ad_user;

private Date created;

@Column(length = 10)
private String address_ip;

                       /* getterts and Setters ... */

这是日志：

org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL "create table session_user (session_id  serial not null, address_ip varchar(10), created timestamp, user_id int4, primary key (session_id))" via JDBC Statement
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:67) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlString(AbstractSchemaMigrator.java:559) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlStrings(AbstractSchemaMigrator.java:504) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.createTable(AbstractSchemaMigrator.java:277) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:71) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:207) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:114) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:183) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:72) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:310) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:467) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:939) ~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) ~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390) ~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) ~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1837) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1774) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1105) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:742) ~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:389) ~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:311) ~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:119) ~[spring-boot-test-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:117) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:108) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:246) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) ~[junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) ~[junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) ~[junit-4.12.jar:4.12]
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) ~[spring-test-5.1.8.RELEASE.jar:5.1.8.RELEASE]
at org.junit.runners.Suite.runChild(Suite.java:128) ~[junit-4.12.jar:4.12]
at org.junit.runners.Suite.runChild(Suite.java:27) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) ~[junit-4.12.jar:4.12]
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) ~[junit-4.12.jar:4.12]
at org.junit.runner.JUnitCore.run(JUnitCore.java:137) ~[junit-4.12.jar:4.12]
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) ~[junit-rt.jar:na]
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) ~[junit-rt.jar:na]
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) ~[junit-rt.jar:na]
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) ~[junit-rt.jar:na]
Caused by: org.postgresql.util.PSQLException: ERREUR: erreur de syntaxe sur ou près de « session_user »
  Position: 14

org.hibernate.tool.schema.spi.CommandAcceptanceException:通过JDBC语句执行DDL“创建表会话用户（会话id序列不为null，地址为ip varchar（10），创建的时间戳，用户id int4，主键（会话id））”时出错
在org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept（GenerationTargetToDatabase.java:67）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlString（AbstractSchemaMigrator.java:559）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlStrings（AbstractSchemaMigrator.java:504）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.tool.schema.internal.AbstractSchemaMigrator.createTable（AbstractSchemaMigrator.java:277）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration（GroupedSchemaMigratorImpl.java:71）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration（AbstractSchemaMigrator.java:207）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration（AbstractSchemaMigrator.java:114）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction（SchemaManagementToolCoordinator.java:183）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process（SchemaManagementToolCoordinator.java:72）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.internal.sessionfactorympl.（sessionfactorympl.java:310）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.boot.internal.SessionFactoryBuilderImpl.build（SessionFactoryBuilderImpl.java:467）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build（EntityManagerFactoryBuilderImpl.java:939）~[hibernate-core-5.3.10.Final.jar:5.3.10.Final]
在org.springframework.orm.jpa.vendor.springhibernatejbapersistenceprovider.createContainerEntityManager工厂（springhibernatejbapersistenceprovider.java:57）~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory（LocalContainerEntityManagerFactoryBean.java:365）~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory（AbstractEntityManagerFactoryBean.java:390）~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.AfterPropertieSet（AbstractEntityManagerFactoryBean.java:377）~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet（LocalContainerEntityManagerFactoryBean.java:341）~[spring-orm-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods（AbstractAutowireCapableBeanFactory.java:1837）~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBeanFactory.java:1774）~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:593）~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:515）~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0（AbstractBeanFactory.java:320）~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:222）~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:318）~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:199）~[spring-beans-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.context.support.AbstractApplicationContext.getBean（AbstractApplicationContext.java:1105）~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:867）~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:549）~[spring-context-5.1.8.RELEASE.jar:5.1.8.RELEASE]
在org.springframework.boot.SpringApplication.refresh（SpringApplication.java:742）~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
在org.springframework.boot.SpringApplication.refreshContext（SpringApplication.java:389）~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
在org.springframework.boot.SpringApplication.run（SpringApplication.java:311）~[spring-boot-2.1.6.RELEASE.jar:2.1.6.RELEASE]
在org.springframework.boot.test.context.SpringBootContextLoader.loadContext（SpringBootContextLoader.java:119）~[spring-boot-test-2.1.6.RELEASE.jar:2.1.6.RELEASE]
位于org.springframework.test.context.cache.Defaul