在 Hibernate 中执行 DDL“Alter table user_roles dropforeign key”错误

Question

2024-01-31T14:44:44.631+03:00  WARN 22160 --- [           main] o.h.t.s.i.ExceptionHandlerLoggedImpl     : GenerationTarget encountered exception accepting command : Error executing DDL "alter table user_roles drop foreign key FKe9wywyhbehk4sruldi99vh9g7" via JDBC [Table 'mangaweb.user_roles' doesn't exist]

org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL "alter table user_roles drop foreign key FKe9wywyhbehk4sruldi99vh9g7" via JDBC [Table 'mangaweb.user_roles' doesn't exist]
    at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:94) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.internal.Helper.applySqlString(Helper.java:233) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.internal.Helper.applySqlStrings(Helper.java:217) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.applyConstraintDropping(SchemaDropperImpl.java:470) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropConstraintsTablesSequences(SchemaDropperImpl.java:242) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata(SchemaDropperImpl.java:215) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop(SchemaDropperImpl.java:185) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:155) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:115) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:244) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]
    at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.lambda$process$5(SchemaManagementToolCoordinator.java:145) ~[hibernate-core-6.4.1.Final.jar:6.4.1.Final]

我认为它会给出此错误，因为无法从该表中删除外键 FKe9wywyhbehk4sruldi99vh9g7 。可能是因为在创建删除时它会在创建之前运行该代码。

我真的不明白为什么会出现这个错误

Answer 1

通过 JDBC [表“mangaweb.user_roles”不存在]

它不能被删除，因为表本身不存在，你应该检查脚本的顺序，也许改变表 user_roles 的脚本的顺序是在创建表本身之前执行的