Function Details
(Date d, Duration p, Date r)
Returns the first day of the period in which the date d falls. The cycle of periods is defined by the given Duration p, repeated in sequence starting at the given reference date r. If the period p is not a whole number of days, the fractional part is ignored.
Useful for handling biweekly pay periods.

FirstDayOfPeriod([date field], Weeks(2), Date(2000,5,1)) returns the date that is the start of the two week period in which the date in the date field falls. The initial two week period that starts the cycle begins on May 1, 2000.

FirstDayOfPeriod(Today(), Days(365), Date(2005,7,1)) returns the date July 1st of the current year-long period. Between 7/1/06 and 7/1/07 this would be July 1, 2006. (As the years go on, this method won't account for leap years.)
Sample Problems and Formulas
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When you bring additional fields into a conversion, Quick Base often finds inconsistencies. For example, say you're converting your Companies column into its own table. One company, Acme Corporation, has offices in New York, Dallas and Portland. So, when you add the City column to the conversion, Quick Base finds three different locations for Acme. A single value in the column you're converting can only match one value in any additional field. Quick Base needs you to clean up the extra cities before it can create your new table. To do so, you have one of two choices:

  • If you want to create three separate Acme records (Acme-New York, Acme-Dallas and Acme-Portland) click the Conform link at the top of the column.
  • If the dissimilar entries are mistakes (say Acme only has one office in New York and the other locations are data-entry errors) go back into your table and correct the inconsistencies—in this case, changing all locations to New York. Then try the conversion again.

Read more about converting a column into a table.

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