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[SQL] SQLite view empty

Discussão em 'Outras Linguagens' iniciado por Stack, Outubro 25, 2024 às 16:02.

  1. Stack

    Stack Membro Participativo

    I'm using SQLite3 and DB Browser for manage my database for a web project, it's a convention register manager. There I have this table

    CREATE TABLE "Tickets" (
    "code" TEXT,
    "name" TEXT NOT NULL,
    "category_id" INTEGER,
    "status" TEXT NOT NULL,
    FOREIGN KEY("category_id") REFERENCES "TicketCategories"("id"),
    PRIMARY KEY("code")
    );


    Here I have a foreign key with the table TicketCategories, this other table:

    CREATE TABLE "TicketCategories" (
    "id" INTEGER,
    "name" TEXT NOT NULL,
    "price" DECIMAL(10, 2) NOT NULL,
    "description" TEXT,
    PRIMARY KEY("id" AUTOINCREMENT)
    );


    The point is, I want to made a view where the "category_id" it appear as the name of the ticket category in "TicketCategories" table, I made this view for do that:

    CREATE VIEW TicketInfo AS
    SELECT
    Tickets.code,
    Tickets.name AS ticket_name,
    TicketCategories.name AS category_name,
    Tickets.status
    FROM
    Tickets
    JOIN
    TicketCategories ON Tickets.id_cat = TicketCategories.id;


    But when I run it, the view appears empty, without any data:
    enter image description here

    I've already made another similar view and it works, I dont know why this view don't work. I tried do some changes and nothing.

    I have tried to change the view creation code like this

    CREATE VIEW TicketInfo AS
    SELECT
    t.code,
    t.name AS ticket_name,
    tc.name AS category_name,
    t.status
    FROM
    Tickets t
    JOIN
    TicketCategories tc ON t.id_cat = tc.id;


    and I tried to use LEFT JOIN, but it didn't solve anything

    Continue reading...

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