Write a select statement that returns these columns from the invoices table: the invoice_number column the invoice_date column the invoice_date column plus 30 days the payment_date column a column named days_to_pay that shows the number of days between the invoice date and the payment date the number of the invoice date’s month the four-digit year of the invoice date when you have this working, add a where clause that retrieves just the invoices for the month of may based on the invoice date, not the number of the invoice month

This query would work on an Oracle database:

SELECT

invoice_number,

invoice_date,

invoice_date+30,

payment_date,

payment_date-invoice_date AS days_to_pay,

to_date(invoice_date, 'MM'),

to_date(invoice_date, '')

FROM Invoices

WHERE to_char(to_date(invoice_date, 'MM')) = '05'

In fact, the operation with dates are allowed there (i.e. date+1 means "the day after the date"), and date1-date2 return the days between the two dates.

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