将 MySQL 语法转换为 PostgreSQL答案

【问题标题】：converting MySQL syntax to PostgreSQL将 MySQL 语法转换为 PostgreSQL
【发布时间】：2022-01-24 19:18:46
【问题描述】：

所以我在 MySQL 中设计了一个 Bank 数据库，现在我想将一些语法转换为 PostgreSQL 这是我的帐户和分支表：

CREATE TABLE `account` (
  `accountnumber` int(80) NOT NULL,
  `balance` text COLLATE utf8_bin NOT NULL,
  `date` date NOT NULL,
  `time` time NOT NULL,
  `branchID` int(25) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

CREATE TABLE `branch` (
  `branchID` int(25) NOT NULL,
  `bName` varchar(50) COLLATE utf8_bin NOT NULL,
  `bCity` varchar(50) COLLATE utf8_bin NOT NULL,
  `assests` bigint(20) NOT NULL,
  `mainbankID` int(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

我已经对其进行了转换，但是这些部分存在问题：

ALTER TABLE `account`
  ADD PRIMARY KEY (`accountnumber`),
  ADD KEY `branchID` (`branchID`);

ALTER TABLE `account`
  ADD CONSTRAINT `account_ibfk_1` FOREIGN KEY (`branchID`) REFERENCES `branch` (`branchID`);

例如，我尝试这样写第一个，我得到了错误：

ALTER TABLE account
  ADD PRIMARY KEY (accountnumber),
  ADD KEY branchID (branchID);

我收到了这个错误：

type "branchid" does not exist

这是我在 PostgreSQL 中转换和工作的一段代码：

--
-- Database: `bank`
--

-- --------------------------------------------------------

--
-- Table structure for table account
--

CREATE TABLE account (
  accountnumber INTEGER NOT NULL,
  balance text  NOT NULL,
  date date NOT NULL,
  time time NOT NULL,
  branchID INTEGER NOT NULL
) ;

--
-- Dumping data for table `account`
--

INSERT INTO account (accountnumber, balance, date, time, branchID) VALUES
(1132, 'توضیحات ترازنامه', '2021-07-12', '00:00:03', 516),
(1792, 'توضیحات ترازنامه', '2020-05-29', '11:17:27', 516),
(5130, 'توضیحات ترازنامه', '2016-02-23', '13:18:00', 123),
(7123, 'توضیحات ترازنامه', '2011-11-16', '10:25:00', 124),
(8210, 'توضیحات ترازنامه', '2019-01-11', '16:20:06', 215);

-- --------------------------------------------------------

--
-- Table structure for table `borrower`
--

CREATE TABLE borrower (
  customerID INTEGER NOT NULL,
  loanID INTEGER NOT NULL
)  ;

--
-- Dumping data for table `borrower`
--

INSERT INTO borrower (customerID, loanID) VALUES
(7951, 357),
(1089, 357);

-- --------------------------------------------------------

--
-- Table structure for table `branch`
--

CREATE TABLE branch (
  branchID INTEGER NOT NULL,
  bName varchar(50) NOT NULL,
  bCity varchar(50) NOT NULL,
  assests bigint NOT NULL,
  mainbankID INTEGER NOT NULL
)  ;

--
-- Dumping data for table `branch`
--

INSERT INTO branch (branchID, bName, bCity, assests, mainbankID) VALUES
(123, 'سعادت اباد', 'تهران', 250000000, 1111),
(124, 'تجریش', 'همدان ', 5842000, 2222),
(215, 'خیابان قیام', 'یزد', 700000000, 2222),
(391, 'نقش جهان', 'اصفهان', 20100000, 1111),
(516, 'میرداماد', 'تهران', 953200000, 1111);

-- --------------------------------------------------------

--
-- Table structure for table `customer`
--

CREATE TABLE customer (
  customerID INTEGER NOT NULL,
  CName varchar(78) NOT NULL,
  cphonenumber INTEGER NOT NULL,
  cCity varchar(50) NOT NULL,
  caddress text NOT NULL,
  cage INTEGER NOT NULL
)  ;

--
-- Dumping data for table `customer`
--

INSERT INTO customer (customerID, CName, cphonenumber, cCity, caddress, cage) VALUES
(412, 'معین سپهری', 387496, 'تهران', 'تهران شهرک غرب', 27),
(1089, 'سحر مقدم', 3254896, 'اصفهان', 'اصفهان پل خواجوو', 32),
(7951, 'ددا رضوی', 36232323, 'تهران', 'تهران شهرک اندیشه مجتمع رز', 26),
(463241, 'محمد فلاح', 3456213, 'یزد', 'یزد خیابان کاشانی کوچه علوی', 50);

-- --------------------------------------------------------

--
-- Table structure for table `depositor`
--

CREATE TABLE depositor (
  customerID INTEGER NOT NULL,
  accountnumber INTEGER NOT NULL
)  ;

--
-- Dumping data for table `depositor`
--

INSERT INTO depositor (customerID, accountnumber) VALUES
(7951, 7123),
(463241, 5130),
(412, 1132),
(463241, 1132),
(1089, 1132);

-- --------------------------------------------------------

--
-- Table structure for table `employee`
--

CREATE TABLE employee (
  EmployeeID INTEGER NOT NULL,
  Employeework varchar(100) NOT NULL,
  Employeename varchar(25) NOT NULL,
  aphonenumber INTEGER NOT NULL,
  Employmentyear smallint NOT NULL,
  eaddress text NOT NULL,
  esalary INTEGER NOT NULL,
  branchID INTEGER NOT NULL
)  ;

--
-- Dumping data for table `employee`
--

CREATE TABLE mainbank (
  mainbankID INTEGER NOT NULL,
  mainname varchar(25) NOT NULL,
  constructionyear smallint NOT NULL,
  budget INTEGER NOT NULL
)  ;

--
-- Dumping data for table `mainbank`
--

INSERT INTO mainbank (mainbankID, mainname, constructionyear, budget) VALUES
(1111, 'saderat', 1925, 20000000),
(2222, 'melli', 1912, 100000000);

-- --------------------------------------------------------

--
-- Table structure for table `managment`
--

CREATE TABLE managment (
  managmentID INTEGER NOT NULL,
  managename varchar(25) NOT NULL,
  mphonenumber INTEGER NOT NULL,
  manageaddress text NOT NULL,
  manageage INTEGER NOT NULL,
  manageedu varchar(100) NOT NULL,
  msalary INTEGER NOT NULL,
  employmentyear smallint NOT NULL,
  branchID INTEGER NOT NULL
)  ;

--
-- Dumping data for table `managment`
--

INSERT INTO managment (managmentID, managename, mphonenumber, manageaddress, manageage, manageedu, msalary, employmentyear, branchID) VALUES
(1030, 'akbar fallah', 2146258, 'tehran pol sadr', 59, 'Master of Banking', 2100000000, 2011, 516),
(1046, 'mohammad alavi', 352146, 'yazd blv jomhorii', 63, 'Master of Banking', 18200000, 2016, 215);


-- --------------------------------------------------------

--
-- Table structure for table `safebox`
--

CREATE TABLE safebox (
  safeboxID INTEGER NOT NULL,
  price INTEGER NOT NULL,
  date date NOT NULL,
  time time(0) NOT NULL,
  branchID INTEGER NOT NULL
)  ;

--
-- Dumping data for table `safebox`
--

INSERT INTO safebox (safeboxID, price, date, time, branchID) VALUES
(162, 75000000, '2020-11-07', '20:03:41', 123),
(888, 28000000, '2020-04-22', '10:00:00', 391),
(1642, 160000, '2019-01-25', '10:25:04', 215);

-- --------------------------------------------------------

--
-- Table structure for table `servise`
--

CREATE TABLE servise (
  serviseID INTEGER NOT NULL,
  sname varchar(25) NOT NULL,
  Employmentyear smallint NOT NULL,
  sage INTEGER NOT NULL,
  sphone INTEGER NOT NULL,
  saddress text NOT NULL,
  ssalary INTEGER NOT NULL,
  branchID INTEGER NOT NULL
)  ;

--
-- Dumping data for table `servise`
--

INSERT INTO servise (serviseID, sname, Employmentyear, sage, sphone, saddress, ssalary, branchID) VALUES
(13333, 'iman', 1999, 49, 213620, 'tehran andishe', 30000, 516),
(15555, 'hesam', 2015, 38, 216201, 'tehran tajrish', 300000, 124);

这是我在 MySQL 中的全部代码：

-- phpMyAdmin SQL Dump
-- version 4.8.5
-- https://www.phpmyadmin.net/
--
-- Host: 127.0.0.1
-- Generation Time: Jan 23, 2022 at 11:37 PM
-- Server version: 10.1.38-MariaDB
-- PHP Version: 7.3.3

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
SET AUTOCOMMIT = 0;
START TRANSACTION;
SET time_zone = "+00:00";


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;

--
-- Database: `bank`
--

-- --------------------------------------------------------

--
-- Table structure for table `account`
--

CREATE TABLE `account` (
  `accountnumber` int(80) NOT NULL,
  `balance` text COLLATE utf8_bin NOT NULL,
  `date` date NOT NULL,
  `time` time NOT NULL,
  `branchID` int(25) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `account`
--

INSERT INTO `account` (`accountnumber`, `balance`, `date`, `time`, `branchID`) VALUES
(1132, 'توضیحات ترازنامه', '2021-07-12', '00:00:03', 516),
(1792, 'توضیحات ترازنامه', '2020-05-29', '11:17:27', 516),
(5130, 'توضیحات ترازنامه', '2016-02-23', '13:18:00', 123),
(7123, 'توضیحات ترازنامه', '2011-11-16', '10:25:00', 124),
(8210, 'توضیحات ترازنامه', '2019-01-11', '16:20:06', 215);

-- --------------------------------------------------------

--
-- Table structure for table `borrower`
--

CREATE TABLE `borrower` (
  `customerID` int(50) NOT NULL,
  `loanID` int(50) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `borrower`
--

INSERT INTO `borrower` (`customerID`, `loanID`) VALUES
(7951, 357),
(1089, 357);

-- --------------------------------------------------------

--
-- Table structure for table `branch`
--

CREATE TABLE `branch` (
  `branchID` int(25) NOT NULL,
  `bName` varchar(50) COLLATE utf8_bin NOT NULL,
  `bCity` varchar(50) COLLATE utf8_bin NOT NULL,
  `assests` bigint(20) NOT NULL,
  `mainbankID` int(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `branch`
--

INSERT INTO `branch` (`branchID`, `bName`, `bCity`, `assests`, `mainbankID`) VALUES
(123, 'سعادت اباد', 'تهران', 250000000, 1111),
(124, 'تجریش', 'همدان ', 5842000, 2222),
(215, 'خیابان قیام', 'یزد', 700000000, 2222),
(391, 'نقش جهان', 'اصفهان', 20100000, 1111),
(516, 'میرداماد', 'تهران', 953200000, 1111);

-- --------------------------------------------------------

--
-- Table structure for table `customer`
--

CREATE TABLE `customer` (
  `customerID` int(50) NOT NULL,
  `CName` varchar(78) COLLATE utf8_bin NOT NULL,
  `cphone number` int(11) NOT NULL,
  `cCity` varchar(50) COLLATE utf8_bin NOT NULL,
  `caddress` text COLLATE utf8_bin NOT NULL,
  `cage` int(3) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `customer`
--

INSERT INTO `customer` (`customerID`, `CName`, `cphone number`, `cCity`, `caddress`, `cage`) VALUES
(412, 'معین سپهری', 387496, 'تهران', 'تهران شهرک غرب', 27),
(1089, 'سحر مقدم', 3254896, 'اصفهان', 'اصفهان پل خواجوو', 32),
(7951, 'ددا رضوی', 36232323, 'تهران', 'تهران شهرک اندیشه مجتمع رز', 26),
(463241, 'محمد فلاح', 3456213, 'یزد', 'یزد خیابان کاشانی کوچه علوی', 50);

-- --------------------------------------------------------

--
-- Table structure for table `depositor`
--

CREATE TABLE `depositor` (
  `customerID` int(50) NOT NULL,
  `accountnumber` int(80) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `depositor`
--

INSERT INTO `depositor` (`customerID`, `accountnumber`) VALUES
(7951, 7123),
(463241, 5130),
(412, 1132),
(463241, 1132),
(1089, 1132);

-- --------------------------------------------------------

--
-- Table structure for table `employee`
--

CREATE TABLE `employee` (
  `EmployeeID` int(10) NOT NULL,
  `Employeework` varchar(100) COLLATE utf8_bin NOT NULL,
  `Employeename` varchar(25) COLLATE utf8_bin NOT NULL,
  `aphonenumber` int(11) NOT NULL,
  `Employmentyear` year(4) NOT NULL,
  `eaddress` text COLLATE utf8_bin NOT NULL,
  `esalary` int(20) NOT NULL,
  `branchID` int(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `employee`
--

INSERT INTO `employee` (`EmployeeID`, `Employeework`, `Employeename`, `aphonenumber`, `Employmentyear`, `eaddress`, `esalary`, `branchID`) VALUES
(1551, 'Official', 'ali akbari', 912512123, 1941, 'tehran andarzgoo', 1400000000, 123),
(1881, 'Official', 'nazi imanii', 91352412, 1998, 'yazd kashani', 80000000, 215);

-- --------------------------------------------------------

--
-- Table structure for table `loan`
--

CREATE TABLE `loan` (
  `loanID` int(50) NOT NULL,
  `amount` int(50) NOT NULL,
  `branchID` int(25) NOT NULL,
  `startdate` date NOT NULL,
  `enddate` date NOT NULL,
  `time` time NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `loan`
--

INSERT INTO `loan` (`loanID`, `amount`, `branchID`, `startdate`, `enddate`, `time`) VALUES
(357, 300000, 516, '2020-01-02', '2022-01-12', '10:00:00'),
(412, 1230000, 215, '1998-08-25', '2021-11-25', '09:00:00'),
(863, 5400000, 516, '1996-08-13', '2020-12-30', '07:14:00');

-- --------------------------------------------------------

--
-- Table structure for table `mainbank`
--

CREATE TABLE `mainbank` (
  `mainbankID` int(10) NOT NULL,
  `mainname` varchar(25) COLLATE utf8_bin NOT NULL,
  `constructionyear` year(4) NOT NULL,
  `budget` int(20) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `mainbank`
--

INSERT INTO `mainbank` (`mainbankID`, `mainname`, `constructionyear`, `budget`) VALUES
(1111, 'saderat', 1925, 20000000),
(2222, 'melli', 1912, 100000000);

-- --------------------------------------------------------

--
-- Table structure for table `managment`
--

CREATE TABLE `managment` (
  `managmentID` int(10) NOT NULL,
  `managename` varchar(25) COLLATE utf8_bin NOT NULL,
  `mphonenumber` int(11) NOT NULL,
  `manageaddress` text COLLATE utf8_bin NOT NULL,
  `manageage` int(3) NOT NULL,
  `manageedu` varchar(100) COLLATE utf8_bin NOT NULL,
  `msalary` int(20) NOT NULL,
  `employmentyear` year(4) NOT NULL,
  `branchID` int(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `managment`
--

INSERT INTO `managment` (`managmentID`, `managename`, `mphonenumber`, `manageaddress`, `manageage`, `manageedu`, `msalary`, `employmentyear`, `branchID`) VALUES
(1030, 'akbar fallah', 2146258, 'tehran pol sadr', 59, 'Master of Banking', 2100000000, 2011, 516),
(1046, 'mohammad alavi', 352146, 'yazd blv jomhorii', 63, 'Master of Banking', 18200000, 2016, 215);

-- --------------------------------------------------------

--
-- Table structure for table `safebox`
--

CREATE TABLE `safebox` (
  `safeboxID` int(10) NOT NULL,
  `price` int(20) NOT NULL,
  `date` date NOT NULL,
  `time` time NOT NULL,
  `branchID` int(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `safebox`
--

INSERT INTO `safebox` (`safeboxID`, `price`, `date`, `time`, `branchID`) VALUES
(162, 75000000, '2020-11-07', '20:03:41', 123),
(888, 28000000, '2020-04-22', '10:00:00', 391),
(1642, 160000, '2019-01-25', '10:25:04', 215);

-- --------------------------------------------------------

--
-- Table structure for table `servise`
--

CREATE TABLE `servise` (
  `serviseID` int(10) NOT NULL,
  `sname` varchar(25) COLLATE utf8_bin NOT NULL,
  `Employmentyear` year(4) NOT NULL,
  `sage` int(3) NOT NULL,
  `sphone` int(11) NOT NULL,
  `saddress` text COLLATE utf8_bin NOT NULL,
  `ssalary` int(20) NOT NULL,
  `branchID` int(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

--
-- Dumping data for table `servise`
--

INSERT INTO `servise` (`serviseID`, `sname`, `Employmentyear`, `sage`, `sphone`, `saddress`, `ssalary`, `branchID`) VALUES
(13333, 'iman', 1999, 49, 213620, 'tehran andishe', 30000, 516),
(15555, 'hesam', 2015, 38, 216201, 'tehran tajrish', 300000, 124);

--
-- Indexes for dumped tables
--

--
-- Indexes for table `account`
--
ALTER TABLE `account`
  ADD PRIMARY KEY (`accountnumber`),
  ADD KEY `branchID` (`branchID`);

--
-- Indexes for table `borrower`
--
ALTER TABLE `borrower`
  ADD KEY `customerID` (`customerID`),
  ADD KEY `loanID` (`loanID`);

--
-- Indexes for table `branch`
--
ALTER TABLE `branch`
  ADD PRIMARY KEY (`branchID`);

--
-- Indexes for table `customer`
--
ALTER TABLE `customer`
  ADD PRIMARY KEY (`customerID`);

--
-- Indexes for table `depositor`
--
ALTER TABLE `depositor`
  ADD KEY `account number` (`accountnumber`),
  ADD KEY `customerID` (`customerID`);

--
-- Indexes for table `employee`
--
ALTER TABLE `employee`
  ADD PRIMARY KEY (`EmployeeID`),
  ADD KEY `branchID` (`branchID`);

--
-- Indexes for table `loan`
--
ALTER TABLE `loan`
  ADD PRIMARY KEY (`loanID`),
  ADD KEY `branchID` (`branchID`);

--
-- Indexes for table `mainbank`
--
ALTER TABLE `mainbank`
  ADD PRIMARY KEY (`mainbankID`);

--
-- Indexes for table `managment`
--
ALTER TABLE `managment`
  ADD PRIMARY KEY (`managmentID`),
  ADD KEY `branchID` (`branchID`);

--
-- Indexes for table `safebox`
--
ALTER TABLE `safebox`
  ADD PRIMARY KEY (`safeboxID`),
  ADD KEY `branchID` (`branchID`);

--
-- Indexes for table `servise`
--
ALTER TABLE `servise`
  ADD PRIMARY KEY (`serviseID`),
  ADD KEY `branchID` (`branchID`);

--
-- Constraints for dumped tables
--

--
-- Constraints for table `account`
--
ALTER TABLE `account`
  ADD CONSTRAINT `account_ibfk_1` FOREIGN KEY (`branchID`) REFERENCES `branch` (`branchID`);

--
-- Constraints for table `borrower`
--
ALTER TABLE `borrower`
  ADD CONSTRAINT `borrower_ibfk_1` FOREIGN KEY (`customerID`) REFERENCES `customer` (`customerID`),
  ADD CONSTRAINT `borrower_ibfk_2` FOREIGN KEY (`loanID`) REFERENCES `loan` (`loanID`);

--
-- Constraints for table `depositor`
--
ALTER TABLE `depositor`
  ADD CONSTRAINT `depositor_ibfk_1` FOREIGN KEY (`accountnumber`) REFERENCES `account` (`accountnumber`),
  ADD CONSTRAINT `depositor_ibfk_2` FOREIGN KEY (`customerID`) REFERENCES `customer` (`customerID`);

--
-- Constraints for table `employee`
--
ALTER TABLE `employee`
  ADD CONSTRAINT `employee_ibfk_1` FOREIGN KEY (`branchID`) REFERENCES `branch` (`branchID`);

--
-- Constraints for table `loan`
--
ALTER TABLE `loan`
  ADD CONSTRAINT `loan_ibfk_1` FOREIGN KEY (`branchID`) REFERENCES `branch` (`branchID`);

--
-- Constraints for table `managment`
--
ALTER TABLE `managment`
  ADD CONSTRAINT `managment_ibfk_1` FOREIGN KEY (`branchID`) REFERENCES `branch` (`branchID`);

--
-- Constraints for table `safebox`
--
ALTER TABLE `safebox`
  ADD CONSTRAINT `safebox_ibfk_1` FOREIGN KEY (`branchID`) REFERENCES `branch` (`branchID`);

--
-- Constraints for table `servise`
--
ALTER TABLE `servise`
  ADD CONSTRAINT `servise_ibfk_1` FOREIGN KEY (`branchID`) REFERENCES `branch` (`branchID`);
COMMIT;

/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

【问题讨论】：

请发布您遇到的错误。发布除凭据和/或任何 PPI 之外的整个错误。
@Nandostyle 我收到此错误“类型“分支”不存在”
identifier 是 MySQL 的东西，不能在 Postgres 中使用：create table_name` (id integer);错误：“"LINE 1: create table_name` (id integer);` 处或附近的语法错误与ENGINE=InnoDB 相同。因此您需要向我们展示您用于创建对象的实际 Postgres 定义。添加为问题的更新。
您可以免费阅读手册：postgresql.org/docs/current/ddl-basics.html
@AdrianKlaver 我对你提到的这些部分没有问题，我已经修复了它们。添加为更新

标签： mysql sql postgresql

【解决方案1】：

首先，您需要将反引号 (`) 替换为符合标准的双引号 (")。这也将防止branchID 被折叠成小写。

其次，您必须使用ALTER TABLE ... ADD UNIQUE (colname) 而不是ALTER TABLE ... ADD KEY (colname)。您需要一个唯一约束作为外键的目标。

【讨论】：

所以我不需要在 ALTER TABLE 中创建和添加索引？我应该像这样单独写吗？ CREATE INDEX branchID ON account (branchID);
没错。选择与列名不同的索引名称可能会有所帮助，这样您就不会混淆它们。
ty，你能帮我处理另一部分吗？ ALTER TABLE account ADD CONSTRAINT account_ibfk_1 FOREIGN KEY (branchID) REFERENCES branch (branchID); 我在问题中提到了它并为 PostgreSQL 重写了它，但我收到了这个错误（（没有唯一约束匹配给定键的引用表“分支”）））
外键是正确的，但我一定误解了KEY。请参阅我的更新答案。
我按照你的说法进行了更改：ALTER TABLE account ADD UNIQUE (branchID); 但我收到了新错误（（无法创建唯一索引“account_branchid_key”）

【解决方案2】：

您可以为此目的使用此软件：

https://soft-builder.com/how-to-convert-mysql-database-to-postgresql/

【讨论】：