gusty seal
Basically I'm trying to re-create this SQL script:
CREATE TABLE ArticleThemes (
articleId INTEGER,
theme TEXT,
FOREIGN KEY (articleId) REFERENCES Article(id),
FOREIGN KEY (theme) REFERENCES Theme(theme),
PRIMARY KEY (articleId, theme)
);
But it's just not possible to declare a primary key composed of several columns. Am I missing something?
tropic copperBOT
Hi @gusty seal. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
Based on the provided knowledge sources, Astro's defineTable function does not currently support composite primary keys. In Astro, you can define a primary key for a column using the primaryKey property, but this is only applicable to a single column.
Here's an example of how you would typically define a primary key in Astro:
const Author = defineTable({
columns: {
id: column.number({ primaryKey: true }),
name: column.text(),
}
});
In the above example, the id column is set as the primary key. However, there's no provided way to set multiple columns as a composite primary key.
For more complex relationships between tables, Astro provides the foreignKeys API, which allows you to relate multiple table columns. But this is not the same as a composite primary key.
Here's an example of how you would use the foreignKeys API:
const Author = defineTable({
columns: {
firstName: column.text(),
lastName: column.text(),
},
});
const Comment = defineTable({
columns: {
authorFirstName: column.text(),
authorLastName: column.text(),
body: column.text(),
},
foreignKeys: [
{
columns: ["authorFirstName", "authorLastName"],
references: () => [Author.columns.firstName, Author.columns.lastName],
},
],
});
In the above example, the Comment table has a foreign key that references the firstName and lastName columns in the Author table.