I want to get all members who are active and payment period = fortnightly and corresponding savings record for each member for a specific year and month. Note that some of the members may not have a savings record for given year and month. I have a query written, but it does not return the members who does not have a savings record in savings table.
SELECT Member.memberID As [ID],Member.firstName AS [First Name],
Member.lastName AS [Last Name], Member.paymentPeriod AS [Payment Period],
Savings.savingId AS [Savings Id], Savings.enteredAmount AS [Amount]
FROM Member
LEFT JOIN Savings ON Member.memberID = Savings.memberId
WHERE Member.isActive = 'Active' AND Member.paymentPeriod = 'Fortnightly'
AND Year(Savings.enteredDate)=2019 AND Month(Savings.enteredDate) = 1;
Move the SAVINGS
conditions from WHERE
to ON
to get true LEFT JOIN
result:
SELECT Member.memberID As [ID],Member.firstName AS [First Name],
Member.lastName AS [Last Name], Member.paymentPeriod AS [Payment Period],
Savings.savingId AS [Savings Id], Savings.enteredAmount AS [Amount]
FROM Member
LEFT JOIN Savings ON Member.memberID = Savings.memberId
AND Year(Savings.enteredDate)=2019 AND Month(Savings.enteredDate) = 1
WHERE Member.isActive = 'Active' AND Member.paymentPeriod = 'Fortnightly';
(With those conditions in the WHERE
clause, you'll get regular INNER JOIN
result.)
Edit: Attempt to avoid " Join expression not supported error ":
SELECT Member.memberID As [ID],Member.firstName AS [First Name],
Member.lastName AS [Last Name], Member.paymentPeriod AS [Payment Period],
Savings.savingId AS [Savings Id], Savings.enteredAmount AS [Amount]
FROM Member
LEFT JOIN Savings ON Member.memberID = Savings.memberId
WHERE Member.isActive = 'Active' AND Member.paymentPeriod = 'Fortnightly'
AND (Year(Savings.enteredDate)=2019 or Year(Savings.enteredDate) IS NULL)
AND (Month(Savings.enteredDate) = 1 or Month(Savings.enteredDate) IS NULL);
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