Best-practice samples for common queries

See the following samples of best practices for some common use cases.

• Get a list of Subscriptions and the associated Accounts whose custom field geographicregion__c is West

  SELECT subscription.id, account.id
  FROM Subscription
  INNER JOIN account ON subscription.accountid = account.id
  WHERE account.geographicregion__c = ‘West’
  

• Get the Products updated since January 1, 2019

  SELECT *
  FROM Product
  WHERE updateddate >= timestamp '2019-01-01 -7:00'
  

• Get the Accounts with Usage for the Products with specified SKUs

  SELECT a.accountnumber
  FROM Usage u, Account a, Product p
  WHERE a.accountnumber = u.accountnumber
  AND p.sku IN
    (
        'SKU-200001',
        'SKU-200002',
        'SKU-200003',
        'SKU-200004'
    )
  GROUP BY a.accountnumber 

• Get Attachments for the object by specifying the associated object ID and associated object type in WHERE clause

  SELECT filename,
         fileid,
         filecontenttype
  FROM   attachment
  WHERE  associatedobjecttype = 'account'
         AND associatedobjectid = 'ff808081298c6e5401298c76f28b006c' 

• Get a list of Invoices whose invoice due date is later than the date of current UTC in Los Angeles time zone.
  For more information about the date function, see Get the date value of a timestamp.

  SELECT *
  FROM   invoice
  WHERE  duedate >= date(CURRENT_TIMESTAMP AT TIME ZONE 'America/Los_Angeles')