Let's say I have a bands and a genres table who are connected through a join table called j_band_genres. Combined, this is my data: ID Names Genres 1 The Beatles Pop, Rock 2 The Rolling Stones Rock 3 Boney M.…
I am new in data base phpmyadmin Here my query that is giving error ALTER TABLE students ADD CONSTRAINT fk_enrollment_student FOREIGN KEY (student_id) REFERENCES enrollments (student_id); Here are structure of my table Table: students Table: enrollments Table: courses It is…
im a beginner and using mysql workbench8.0 ,and it seems like i cant get this to work. ive got three tables. these are my tables: 1.books(id=pk) id title author 1 my first book sara 2 my second book maman 3…
I use DBSCHEMA tool and want to execute a query but I got this error: syntax error at or near "id" position 209 Code: CREATE TABLE user_info ( id UUID PRIMARY KEY, full_name VARCHAR NOT NULL, birthday VARCHAR NOT NULL,…
I tried CREATE TABLE `valorant`.`abilities` ( `PlayerId` INT NOT NULL, `AgentName` VARCHAR(45) NOT NULL, `AbilityName` VARCHAR(45) NOT NULL, `KeyBind` VARCHAR(45) NULL, `Cost` INT NULL, PRIMARY KEY (`PlayerId`, `AgentName`, `AbilityName`)); CREATE TABLE `valorant`.`abilitystats` ( `PlayerId` INT NOT NULL, `AgentName` VARCHAR(45) NOT…
From a PostgreSQL article on foreign keys constraints at https://www.postgresql.org/docs/current/ddl-constraints.html: Say you have the product table : CREATE TABLE products ( product_no integer PRIMARY KEY, name text, price numeric ); Let's also assume you have a table storing orders of…
I try to create relations between different tables in my database and get data from these tables, but I got an error: Property does not exist on this collection instance. This is my code: Migrations files: Schema::table('books', function (Blueprint $table)…
I run sql query in Navicat, so got error; Query: ALTER TABLE `customer_eav_attribute` ADD CONSTRAINT `CUSTOMER_EAV_ATTRIBUTE_ATTRIBUTE_ID_EAV_ATTRIBUTE_ATTRIBUTE_ID` FOREIGN KEY (`attribute_id`) REFERENCES `eav_attribute` (`attribute_id`) ON DELETE CASCADE; Error: 1452 - Cannot add or update a child row: a foreign key constraint fails…
I need to make the connection with the PK from a table to its correspondent FK from another table. This is my db: I only have the case_id from the case table, and I need the case_uid from the case_test…
So i'm trying to make a old project work again but when i put back my tables to the new database i'm having this issue ERROR 1005 (HY000) at line 777: Can't create table ****.#sql-3f2_45 (errno: 150 "Foreign key constraint…