I am trying to have categories in my budget2000 table be the foreign key to category in mainBudget.Category is not a unique number so it cannot be a primary key.When I run the code I get the famous er
I find innodb quite annoying when I try to design a db structure, at least compared with MyIsam, which seems to have less limitations
So I\'m attempting to add a new foreign key to one of my tables as such: ALTER TABLE `UserTransactions`.`ExpenseBackTransactions`
This question already has answers here: MySQL: Can't create table (errno: 150) (35 answers) Closed 1 year ago.
I used MySQL workbench to add a foreign key in a table, but some strange error happened, this is the SQL statement:
When i am trying to import magento database , I getting 开发者_如何学JAVAthe \"Can not create table\".
When I try this ALTER TABLE Comp_Entry ADD FOREIGN KEY(CompetitionID) REFERENCES Comp__Competition(CompetitionID)
Using MySQL Workbench 5.2.33 with MySQL 5.1.41 I have created an EER diagram.But when I try to forward engineer it from MySQL Workbench, I get the following error:
I\'m using the DBIx::Class modules for an ORM approach to an application I have. I\'m having some problems with my relationships.
I\'m trying to create a foreign key on two columns of a table to point to the same column of another开发者_JAVA技巧 table, but I seem to get an error...
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