CODEWITHSUNDEEP
mysqlmysql-workbench
Coursal
Coursal

Reputation: 1387

MySQL: errno: 105 can't create table

I wanted to make a database exactly as below:

enter image description here

So I wanted to define the primary and foreign keys for each table. Based on this answer, I saw that:

So I tried to make some magic on a "pre-heated" code:

CREATE TABLE `City` (
  `ID` int(11) NOT NULL,
  `Name` varchar(35) NOT NULL ,
  `CountryCode` varchar(3) NOT NULL DEFAULT '',
  `District` varchar(20) NOT NULL ,
  `Population` int(11) NOT NULL ,
  PRIMARY KEY(`ID`) ,
  FOREIGN KEY(`CountryCode`) REFERENCES `Country`(`Code`)
) ;

CREATE TABLE `CountryLanguage` (
  `CountryCode` varchar(3) NOT NULL DEFAULT '',
  `Language` varchar(30) NOT NULL ,
  `IsOfficial` varchar(30) NOT NULL ,
  `Percentage` float(4,1) NOT NULL ,
  PRIMARY KEY(`Language`),
  FOREIGN KEY(`CountryCode`) REFERENCES `Country`(`Code`)
  ) ;

CREATE TABLE `Country` (
  `Code` varchar(3) NOT NULL DEFAULT '',
  `Name` varchar(52) NOT NULL DEFAULT '',
  `Continent` varchar(63),
  `Region` varchar(26) NOT NULL DEFAULT '',
  `SurfaceArea` float(10,2) NOT NULL DEFAULT '0.00',
  `IndepYear` smallint(6) DEFAULT NULL,
  `Population` int(11) NOT NULL DEFAULT '0',
  `LifeExpectancy` float(3,1) DEFAULT NULL,
  `GNP` float(10,2) DEFAULT NULL,
  `GNPOld` float(10,2) DEFAULT NULL,
  `LocalName` varchar(45) NOT NULL DEFAULT '',
  `GovernmentForm` varchar(45) NOT NULL DEFAULT '',
  `HeadOfState` varchar(60) DEFAULT NULL,
  `Capital` int(11) DEFAULT NULL,
  `Code2` varchar(2) NOT NULL DEFAULT '',
  PRIMARY KEY(`Code`)
) ;

but my good ol' mysql command line client has the same ERROR 1005 thing twice, and says that it can't create tables 'test.city' and 'test.countrylanguage' with the errno:150 thingy as an explanation.

So I searched a bit around here and I found some answers regarding to table elements not having the same type/parameter (f.e. INT(2) to INT(2) NOT NULL). As fas as I could see, Nothing like this happens here.

What is my coffee-drained brain missing here?

Thank you for your time in advance.

Upvotes: 1

Views: 430

Answers (2)

caot
caot

Reputation: 3328

CREATE TABLE Country first, then CREATE TABLE City, and CREATE TABLE CountryLanguage, since TABLE Country is referenced by the other two tables.

Upvotes: 3

ScaisEdge
ScaisEdge

Reputation: 133360

wrong create sequnce you should create firts Country because City and CountryLanguage refer to country table

CREATE TABLE `Country` (
  `Code` varchar(3) NOT NULL DEFAULT '',
  `Name` varchar(52) NOT NULL DEFAULT '',
  `Continent` varchar(63),
  `Region` varchar(26) NOT NULL DEFAULT '',
  `SurfaceArea` float(10,2) NOT NULL DEFAULT '0.00',
  `IndepYear` smallint(6) DEFAULT NULL,
  `Population` int(11) NOT NULL DEFAULT '0',
  `LifeExpectancy` float(3,1) DEFAULT NULL,
  `GNP` float(10,2) DEFAULT NULL,
  `GNPOld` float(10,2) DEFAULT NULL,
  `LocalName` varchar(45) NOT NULL DEFAULT '',
  `GovernmentForm` varchar(45) NOT NULL DEFAULT '',
  `HeadOfState` varchar(60) DEFAULT NULL,
  `Capital` int(11) DEFAULT NULL,
  `Code2` varchar(2) NOT NULL DEFAULT '',
  PRIMARY KEY(`Code`)
) ;

  CREATE TABLE `City` (
  `ID` int(11) NOT NULL,
  `Name` varchar(35) NOT NULL ,
  `CountryCode` varchar(3) NOT NULL DEFAULT '',
  `District` varchar(20) NOT NULL ,
  `Population` int(11) NOT NULL ,
  PRIMARY KEY(`ID`) ,
  FOREIGN KEY(`CountryCode`) REFERENCES `Country`(`Code`)
) ;

CREATE TABLE `CountryLanguage` (
  `CountryCode` varchar(3) NOT NULL DEFAULT '',
  `Language` varchar(30) NOT NULL ,
  `IsOfficial` varchar(30) NOT NULL ,
  `Percentage` float(4,1) NOT NULL ,
  PRIMARY KEY(`Language`),
  FOREIGN KEY(`CountryCode`) REFERENCES `Country`(`Code`)
  ) ;

Upvotes: 2

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