关于sql：MySql和创建外键


MySql and creating Foreign keys

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
    -- MySQL Script generated by MySQL Workbench
-- Sun Apr  2 17:50:54 2017
-- Model: New Model    Version: 1.0
-- MySQL Workbench Forward Engineering

SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0;
SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='TRADITIONAL,ALLOW_INVALID_DATES';

-- -----------------------------------------------------
-- Schema SintalDB
-- -----------------------------------------------------

-- -----------------------------------------------------
-- Schema SintalDB
-- -----------------------------------------------------
CREATE SCHEMA IF NOT EXISTS `SintalDB` DEFAULT CHARACTER SET utf8 COLLATE utf8_slovenian_ci ;
USE `SintalDB` ;

-- -----------------------------------------------------
-- Table `SintalDB`.`User`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `SintalDB`.`User` (
  `PK_User` INT NOT NULL,
  `Name` VARCHAR(15) NOT NULL,
  `Surname` VARCHAR(25) NOT NULL,
  `Phone_Nr` VARCHAR(13) NOT NULL,
  `Email` VARCHAR(90) NOT NULL,
  `Car_Reg_Nr` VARCHAR(10) NULL,
  `Username` VARCHAR(20) NOT NULL,
  `Password` VARCHAR(20) NOT NULL,
  `Servis_Input_Rights` TINYINT(1) NOT NULL,
  `Servis_Output_Rights` TINYINT(1) NOT NULL,
  `Servis_Delete_Rights` TINYINT(1) NOT NULL,
  `Admin_Rights` TINYINT(1) NOT NULL,
  PRIMARY KEY (`PK_User`))
ENGINE = InnoDB
AUTO_INCREMENT = 1
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_slovenian_ci;


-- -----------------------------------------------------
-- Table `SintalDB`.`City`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `SintalDB`.`City` (
  `PK_City` INT NOT NULL,
  `Name` VARCHAR(45) NOT NULL,
  PRIMARY KEY (`PK_City`))
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_slovenian_ci;


-- -----------------------------------------------------
-- Table `SintalDB`.`Company`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `SintalDB`.`Company` (
  `PK_Company` INT NOT NULL,
  `Name` VARCHAR(25) NOT NULL,
  `Address` VARCHAR(45) NOT NULL,
  `Address_Nr` VARCHAR(4) NOT NULL,
  `FK_City` INT NOT NULL,
  PRIMARY KEY (`PK_Company`),
  INDEX `FK_City_Company_fkn_idx` (`FK_City` ASC),
  CONSTRAINT `FK_City_Company_fkn`
    FOREIGN KEY (`FK_City`)
    REFERENCES `SintalDB`.`City` (`PK_City`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_slovenian_ci;


-- -----------------------------------------------------
-- Table `SintalDB`.`Facility`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `SintalDB`.`Facility` (
  `PK_Facility_AD` VARCHAR(6) NOT NULL,
  `Name` VARCHAR(60) NOT NULL,
  `Address` VARCHAR(45) NOT NULL,
  `Address_Nr` VARCHAR(4) NOT NULL,
  `FK_City` INT NOT NULL,
  `FK_Company_Affiliation` INT NOT NULL,
  PRIMARY KEY (`PK_Facility_AD`),
  INDEX `FK_City_Facility_fkn_idx` (`FK_City` ASC),
  INDEX `FK_Company_Affiliation_Facility_fkn_idx` (`FK_Company_Affiliation` ASC),
  CONSTRAINT `FK_City_Facility_fkn`
    FOREIGN KEY (`FK_City`)
    REFERENCES `SintalDB`.`City` (`PK_City`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `FK_Company_Affiliation_Facility_fkn`
    FOREIGN KEY (`FK_Company_Affiliation`)
    REFERENCES `SintalDB`.`Company` (`PK_Company`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_slovenian_ci;


-- -----------------------------------------------------
-- Table `SintalDB`.`Servis`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `SintalDB`.`Servis` (
  `PK_Servis_Nr` VARCHAR(11) NOT NULL,
  `FK_Facility_AD` VARCHAR(6) NOT NULL,
  `Description` VARCHAR(255) NOT NULL,
  `Date_Recived` DATETIME NOT NULL,
  `FK_User_Commited` INT NULL,
  `Date_Commited` DATETIME NULL,
  `FK_User_Done` INT NULL,
  `Date_Done` DATETIME NULL,
  PRIMARY KEY (`PK_Servis_Nr`),
  INDEX `FK_User_Servis_fkn_idx` (`FK_User_Commited` ASC, `FK_User_Done` ASC),
  INDEX `FK_Facility_Servis_fkn_idx` (`FK_Facility_AD` ASC),
  CONSTRAINT `FK_User_Servis_fkn`
    FOREIGN KEY (`FK_User_Commited` , `FK_User_Done`)
    REFERENCES `SintalDB`.`User` (`PK_User` , `PK_User`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `FK_Facility_Servis_fkn`
    FOREIGN KEY (`FK_Facility_AD`)
    REFERENCES `SintalDB`.`Facility` (`PK_Facility_AD`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_slovenian_ci;


-- -----------------------------------------------------
-- Table `SintalDB`.`ServisNote`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `SintalDB`.`ServisNote` (
  `PK_ServisNote` INT NOT NULL,
  `Note` VARCHAR(255) NOT NULL,
  `FK_User_Note` INT NOT NULL,
  `Date_Created` DATETIME NOT NULL,
  `FK_Servis_Nr` VARCHAR(11) NOT NULL,
  PRIMARY KEY (`PK_ServisNote`),
  INDEX `FK_Servis_ServisNote_fkn_idx` (`FK_Servis_Nr` ASC),
  INDEX `FK_User_ServisNote_fkn_idx` (`FK_User_Note` ASC),
  CONSTRAINT `FK_Servis_ServisNote_fkn`
    FOREIGN KEY (`FK_Servis_Nr`)
    REFERENCES `SintalDB`.`Servis` (`PK_Servis_Nr`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `FK_User_ServisNote_fkn`
    FOREIGN KEY (`FK_User_Note`)
    REFERENCES `SintalDB`.`User` (`PK_User`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_slovenian_ci;


SET SQL_MODE=@OLD_SQL_MODE;
SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;

这是我的sql文件，运行sql文件后出错

错误代码：1215。无法添加外键约束

17:52:08 CREATE TABLE IF NOT EXISTS SintalDB.Servis (
PK_Servis_Nr VARCHAR(11) NOT NULL, FK_Facility_AD VARCHAR(6) NOT
NULL, Description VARCHAR(255) NOT NULL, Date_Recived DATETIME
NOT NULL, FK_User_Commited INT NULL, Date_Commited DATETIME
NULL, FK_User_Done INT NULL, Date_Done DATETIME NULL,
PRIMARY KEY (PK_Servis_Nr), INDEX FK_User_Servis_fkn_idx
(FK_User_Commited ASC, FK_User_Done ASC), INDEX
FK_Facility_Servis_fkn_idx (FK_Facility_AD ASC), CONSTRAINT
FK_User_Servis_fkn FOREIGN KEY (FK_User_Commited ,
FK_User_Done) REFERENCES SintalDB.User (PK_User ,
PK_User) ON DELETE NO ACTION ON UPDATE NO ACTION,
CONSTRAINT FK_Facility_Servis_fkn FOREIGN KEY (FK_Facility_AD)
REFERENCES SintalDB.Facility (PK_Facility_AD) ON DELETE NO
ACTION ON UPDATE NO ACTION) ENGINE = InnoDB DEFAULT CHARACTER SET
= utf8 COLLATE = utf8_slovenian_ci Error Code: 1215. Cannot add foreign key constraint 0.063 sec

检查：在多列上添加外键

我认为你必须添加两个外键才能引用同一列。
您可以替换此代码并进行测试。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
-- -----------------------------------------------------
-- Table `SintalDB`.`Servis`
-- -----------------------------------------------------
CREATE TABLE IF NOT EXISTS `SintalDB`.`Servis` (
  `PK_Servis_Nr` VARCHAR(11) NOT NULL,
  `FK_Facility_AD` VARCHAR(6) NOT NULL,
  `Description` VARCHAR(255) NOT NULL,
  `Date_Recived` DATETIME NOT NULL,
  `FK_User_Commited` INT NULL,
  `Date_Commited` DATETIME NULL,
  `FK_User_Done` INT NULL,
  `Date_Done` DATETIME NULL,
  PRIMARY KEY (`PK_Servis_Nr`),
  INDEX `FK_User_Servis_fkn_idx` (`FK_User_Commited` ASC, `FK_User_Done` ASC),
  INDEX `FK_Facility_Servis_fkn_idx` (`FK_Facility_AD` ASC),
  CONSTRAINT `FK_User_Servis_fkn`
    FOREIGN KEY (`FK_User_Commited`)
    REFERENCES `SintalDB`.`User` (`PK_User` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `FK_User_Servis_2_fkn`
    FOREIGN KEY (`FK_User_Done`)
    REFERENCES `SintalDB`.`User` (`PK_User`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `FK_Facility_Servis_fkn`
    FOREIGN KEY (`FK_Facility_AD`)
    REFERENCES `SintalDB`.`Facility` (`PK_Facility_AD`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB
DEFAULT CHARACTER SET = utf8
COLLATE = utf8_slovenian_ci;
相关讨论