Sql Can'；t使用liquibase添加非空约束

我有一个任务，我应该通过该任务执行以下步骤（使用liquibase）：

向现有表中添加一个新字段（someNewField）

更新所有现有数据（对于所有现有数据someNewField=“someValue”）

之后，我需要使someNewField不为NULL

我的解决方案（不起作用）：

请帮帮我。我不明白我做错了什么

您需要使用

alter

而不是

modify

，它必须是

notnull

（无下划线），并且无需重复数据类型：

ALTER TABLE customer ALTER last_name SET NOT NULL;

---

至少对液化者来说不起作用。几乎相同的错误。啊，复制粘贴错误。我在

NOT_NULL

中没有看到下划线-这显然也是错误的是的，它帮助了我。非常感谢你！

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'liquibase' defined in class path resource [org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfiguration$LiquibaseConfiguration.class]: Invocation of init method failed; nested exception is liquibase.exception.MigrationFailedException: Migration failed for change set classpath:db/changelog/changelog-3.1.xml::2-update-table::fatumepta:
     Reason: liquibase.exception.DatabaseException: ERROR: syntax error at or near "MODIFY"
  Позиция: 22 [Failed SQL: (0) ALTER TABLE customer MODIFY last_name text NOT_NULL]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:609) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1161) ~[spring-context-5.3.1.jar:5.3.1]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:915) ~[spring-context-5.3.1.jar:5.3.1]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[spring-context-5.3.1.jar:5.3.1]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.0.jar:2.4.0]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) [spring-boot-2.4.0.jar:2.4.0]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.4.0.jar:2.4.0]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.0.jar:2.4.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.0.jar:2.4.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) [spring-boot-2.4.0.jar:2.4.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) [spring-boot-2.4.0.jar:2.4.0]
    at edu.liquibase.example.LiquibaseExampleApplication.main(LiquibaseExampleApplication.java:19) [classes/:na]
Caused by: liquibase.exception.MigrationFailedException: Migration failed for change set classpath:db/changelog/changelog-3.1.xml::2-update-table::fatumepta:
     Reason: liquibase.exception.DatabaseException: ERROR: syntax error at or near "MODIFY"
  Позиция: 22 [Failed SQL: (0) ALTER TABLE customer MODIFY last_name text NOT_NULL]
    at liquibase.changelog.ChangeSet.execute(ChangeSet.java:659) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.changelog.visitor.UpdateVisitor.visit(UpdateVisitor.java:53) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.changelog.ChangeLogIterator.run(ChangeLogIterator.java:97) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.Liquibase.update(Liquibase.java:201) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.Liquibase.update(Liquibase.java:178) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.integration.spring.SpringLiquibase.performUpdate(SpringLiquibase.java:368) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.integration.spring.SpringLiquibase.afterPropertiesSet(SpringLiquibase.java:316) ~[liquibase-core-3.10.3.jar:na]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1847) ~[spring-beans-5.3.1.jar:5.3.1]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1784) ~[spring-beans-5.3.1.jar:5.3.1]
    ... 19 common frames omitted
Caused by: liquibase.exception.DatabaseException: ERROR: syntax error at or near "MODIFY"
  Позиция: 22 [Failed SQL: (0) ALTER TABLE customer MODIFY last_name text NOT_NULL]
    at liquibase.executor.jvm.JdbcExecutor$ExecuteStatementCallback.doInStatement(JdbcExecutor.java:430) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.executor.jvm.JdbcExecutor.execute(JdbcExecutor.java:87) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.executor.jvm.JdbcExecutor.execute(JdbcExecutor.java:159) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.database.AbstractJdbcDatabase.execute(AbstractJdbcDatabase.java:1276) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.database.AbstractJdbcDatabase.executeStatements(AbstractJdbcDatabase.java:1258) ~[liquibase-core-3.10.3.jar:na]
    at liquibase.changelog.ChangeSet.execute(ChangeSet.java:622) ~[liquibase-core-3.10.3.jar:na]
    ... 27 common frames omitted
Caused by: org.postgresql.util.PSQLException: ERROR: syntax error at or near "MODIFY"
  Позиция: 22
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2553) ~[postgresql-42.2.18.jar:42.2.18]
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2285) ~[postgresql-42.2.18.jar:42.2.18]
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:323) ~[postgresql-42.2.18.jar:42.2.18]
    at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:473) ~[postgresql-42.2.18.jar:42.2.18]
    at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:393) ~[postgresql-42.2.18.jar:42.2.18]
    at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:322) ~[postgresql-42.2.18.jar:42.2.18]
    at org.postgresql.jdbc.PgStatement.executeCachedSql(PgStatement.java:308) ~[postgresql-42.2.18.jar:42.2.18]
    at org.postgresql.jdbc.PgStatement.executeWithFlags(PgStatement.java:284) ~[postgresql-42.2.18.jar:42.2.18]
    at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:279) ~[postgresql-42.2.18.jar:42.2.18]
    at com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:95) ~[HikariCP-3.4.5.jar:na]
    at com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java) ~[HikariCP-3.4.5.jar:na]
    at liquibase.executor.jvm.JdbcExecutor$ExecuteStatementCallback.doInStatement(JdbcExecutor.java:426) ~[liquibase-core-3.10.3.jar:na]
    ... 32 common frames omitted

ALTER TABLE customer ALTER last_name SET NOT NULL;