导出已完成注册但未执行任何操作的客户列表（无发票、费用、提款）

Question

This is the full task:

Export a list of customers who completed registration but haven't performed any action (no invoice, expense, withdrawal) last week (3-9 May)

I need to create this type of SQL, but I don't know how to check for actions, what I did for now is

SELECT user FROM users_user 
WHERE completed_registration=False
AND date_joined BETWEEN '2021-05-03 00:00:00' AND '2021-05-29 00:00:00'
UNION
SELECT user FROM invoice_invoice;

Check for users who had completed the registration, check for the date, and then check the invoice. But as I check for invoice_invoice itself it's an empty table, why do I get one user when I launch this query? The completed_registration and the date fields which are in queryset right now are only for test.

Only users

This is when I check only for invoices

This is the structure:

Expense model:

class Merchant(BaseModel):
    company = models.ForeignKey(Company, on_delete=models.PROTECT, related_name='merchants')
    name = models.CharField(max_length=255)
    company_code = models.CharField(max_length=255, default='', blank=True)

    def __str__(self):
        return f'{self.company} {self.name}'


class Expense(Operation):
    category = models.CharField(choices=ExpenseCategories.get_choices(), default=ExpenseCategories.GENERAL.name,
                                db_index=True, blank=True, max_length=255)
    merchant = models.ForeignKey(Merchant, on_delete=models.PROTECT, related_name='expenses', blank=True, null=True)
    amount = models.PositiveIntegerField(default=0, blank=True, help_text='Only taxable amount. In cents')
    full_amount = models.PositiveIntegerField(
        default=0,
        blank=True,
        help_text='Full amount. Most of the time same as amount or bigger. In cents'
    )
    currency = models.ForeignKey(Currency, on_delete=models.PROTECT, related_name='expenses',
                                 default=settings.DEFAULT_CURRENCY_CODE)
    description = models.TextField(default='', blank=True)
    is_taxable = models.BooleanField(blank=True, default=True)
    from_date = models.DateField(null=True, blank=True, help_text='Start date in case of aggregated bulk creation.')
    to_date = models.DateField(null=True, blank=True, help_text='End date in case of aggregated bulk creation.')
    receipt_number = models.CharField(blank=True, default='', max_length=255, help_text='Number from receipt.')

Invoice model:

class Invoice(Operation):
    customer = models.ForeignKey(Customer, on_delete=models.CASCADE, related_name='invoices')
    number = models.CharField(max_length=255)
    notes = models.TextField(default='', blank=True)
    payment_due = models.DateField()
    total = models.PositiveIntegerField(help_text='In cents', default=0)
    payment_status = models.CharField(choices=InvoiceStatuses.get_choices(), default=InvoiceStatuses.UNPAID,
                                      max_length=20)
    pdf = models.FileField(null=True, blank=True, upload_to='invoices/pdf', max_length=255)
    is_sent = models.BooleanField(default=False, help_text="Is pdf invoice sent")

User model:

class User(AbstractUser):
    username = None

    email = models.EmailField('email address', blank=True)
    phone = PhoneNumberField(unique=True)

    is_verified = models.BooleanField(default=False)
    language = models.ForeignKey(
        Language,
        default=settings.DEFAULT_LANGUAGE,
        on_delete=models.SET_DEFAULT,
    )
    avatar = models.ImageField(upload_to='users/avatars', null=True, blank=True)
    companies = models.ManyToManyField(Company, related_name='users')
    active_company = models.OneToOneField(Company, null=True, related_name='active_user', on_delete=models.SET_NULL)
    agreement_text = models.TextField(default='', blank=True)
    agreement_date = models.DateField(null=True, blank=True)
    personal_no = models.CharField(max_length=100, default='', blank=True)
    full_name = models.CharField(max_length=255, help_text='Field holds first and last names.', default='', blank=True)
    completed_registration = models.BooleanField(default=False)
    work_hours_from = models.TimeField(default=settings.DEFAULT_WORK_HOURS_FROM, null=True, blank=True)
    work_hours_until = models.TimeField(default=settings.DEFAULT_WORK_HOURS_UNTIL, null=True, blank=True)

Answer 1

You seem to want not exists . I would expect logic like this:

SELECT u.*
FROM users_user u
WHERE u.completed_registration AND
      NOT EXISTS (SELECT 1
                  FROM invoice_invoice i
                  WHERE i.user = u.user AND
                        i.invoice_date >= '2021-05-03' AND
                        i.invoice_date < '2021-05-10'
                 );

You would repeat this logic for each table where you want to check an action. Also, it is not clear what date you want to use within the invoice table, so I made one up.