如何为新的JPA @ElementCollection编写SQL DDL查询

Question

我在域类（JPA）中完成了代码更改。我添加了一个ElementCollection到实体：

@ElementCollection(targetClass = String.class) 
@CollectionTable(name = "T_NETWORK_STATE", joinColumns = {@JoinColumn(name = "NETWORK_ID")}) 
@Column(name = "STATE") 
private Set<String> states = new HashSet<>(); 

现在我想写这种变化飞路更新数据库脚本。我需要T_NETWORK_STATE表的SQL DDL。

我是新来编写sql查询。任何帮助将不胜感激！

Answer 1

CREATE TABLE T_NETWORK_STATE (
    NETWORK_ID INT, 
    STATE VARCHAR(100), 
    UNIQUE INDEX (NETWORK_ID, STATE), 
    FOREIGN KEY (NETWORK_ID) REFERENCES NETWORK(NETWORK_ID) 
);