SQL语句“CREATE TABLE TRIP…”中的语法错误

Question

我在尝试使用flyway和hibernate为PostgresSql创建表时遇到语法错误的问题。Trip类与其他类没有关系（还没有）。我已经成功地为其他两个类创建了购买和用户，但是这个只是给出了错误。

错误信息：

[错误]测试运行：1，失败：0，错误：1，跳过：0，所用时间：3.003秒

SQL状态：42000错误代码：42000消息：SQL语句“CREATE TABLE TRIP（ID BIGINT默认生成为IDENTITY，TITLE VARCHAR（255）NOT NULL，DESCRIPTION VARCHAR（255），COST INTEGER NOT NULL，LOCATION VARCHAR（124）NOT NULL，DEPARATION DATE NOT NULL，RETURNING DATE NOT NULL，PRIMARY KEY（ID））

我的flyway sql脚本：

create sequence hibernate_sequence start with 1 increment by 1;

create table user_roles (user_email varchar(255) not null, roles varchar(255));

create table users (email varchar(255) not null, firstname varchar(50) not null, middle_name 
varchar(50), surename varchar(50) not null, password varchar(255) not null, address 
varchar(128) not null, postal_code varchar(124) not null, enabled boolean not null, primary 
key (email));

create table purchase (id bigint generated by default as identity, booked_date date not 
null, user_email varchar(255) not null, trip_id bigint not null, primary key (id));

create table trip (id bigint generated by default as identity, title varchar(255) not null, 
description varchar(255), cost integer not null, location varchar(128) not null, departure 
date not null, returning date not null, primary key (id))


alter table user_roles add constraint FKs9rxtuttxq2ln7mtp37s4clce foreign key (user_email)         
references users;

alter table purchase add constraint FKlqrv1aj0pon999jbi5esfpe4k foreign key (user_email) 
references users;

这是我的旅行实体：

package org.studentnr.backend.entities;

import javax.persistence.*;
import javax.validation.constraints.*;
import java.time.LocalDate;

@Entity
public class Trip {

 @Id @GeneratedValue
 private Long id;

 @NotBlank
 @Size(max=255)
 private String title;

 //@NotBlank //TODO: Can be blank???
 @Size(max=255)
 private String description;

 //@Min(0) TODO: remember to add 'check (cost>0)' to flyway to avoid using negative values
 @NotNull
 private Integer cost;

 @NotBlank
 @Size(max = 124)
 private String location;

 @NotNull
 @Future   
 private LocalDate departure;

 @NotNull
 @Future  
 private LocalDate returning;



public Trip(){
}

public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

public String getDescription() {
    return description;
}

public void setDescription(String description) {
    this.description = description;
}

public int getCost() {
    return cost;
}

public void setCost(int cost) {
    this.cost = cost;
}

public String getLocation() {
    return location;
}

public void setLocation(String location) {
    this.location = location;
}

public LocalDate getDepartureDate() {
    return departure;
}

public void setDepartureDate(LocalDate departureDate) {
    this.departure = departureDate;
}

public LocalDate getReturnDate() {
    return returning;
}

public void setReturnDate(LocalDate returnDate) {
    this.returning = returnDate;
}



}

Answer 1

您的脚本中有两个错误：

1. 有一个<代码>

如果这两件事被纠正，脚本就起作用了

我还将为外键约束使用更有意义的名称。