I am using Cube.js for fetching the data from Postgres. By default, cube.js does a left join on 2 selected tables. Is there any way to get the result by Full Outer Join?
User Register Table
ID TIME
1 10.00
3 9.00
Last Active Table
ID TIME
1 11.00
2 10.00
So output I want is
ID Last_active_time Register_time
1 11.00 10.00
2 10.00 ----
3 ---- 9.00
Cube.js uses only LEFT JOIN
to express relationship between cubes for the purpose of encouraging right Cube.js schema design: https://cube.dev/docs/joins. Your case can be expressed as following Cube.js schema:
cube(`Users`, {
sql: `
SELECT DISTINCT id FROM users_register
UNION
SELECT DISTINCT id FROM last_active`,
joins: {
UsersRegister: {
sql: `${Users}.id = ${UsersRegister}.id`,
relationship: `hasMany`
},
UsersLastActive: {
sql: `${Users}.id = ${UsersLastActive}.id`,
relationship: `hasMany`
}
},
dimensions: {
id: {
sql: `id`,
type: `number`,
primaryKey: true
}
}
});
cube(`UsersRegister`, {
sql: `select * from users_register`,
measures: {
registerTime: {
sql: `time`,
type: `min`
}
},
dimensions: {
id: {
sql: `id`, // if id is unique within users_register
type: `number`,
primaryKey: true
}
}
});
cube(`UsersLastActive`, {
sql: `select * from last_active`,
measures: {
lastActiveTime: {
sql: `time`,
type: `max`
}
},
dimensions: {
id: {
sql: `id`, // if id is unique within last_active
type: `number`,
primaryKey: true
}
}
});
Query to get desired result:
{
measures: ['UsersLastActive.lastActiveTime', 'UsersRegister.registerTime'],
dimensions: ['Users.id']
}