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Date & Time Query Functions

The following date & time functions are supported by cQL.

Many of these functions take date, time and timestamp parameters, so their function prototypes may reference the following types.

  • date - refers to a date-only value, typically in YYYY-MM-DD format.
  • time - refers to a time-only value, typically in HH:MM:SS format.
  • timestamp - refers to a date time, date or time value, typically in "YYYY-MM-DD HH:MM:SS", "YYYY-MM-DD" or "HH:MM:SS" format, but in some cases something like "DD HH:MM:SS" format is also allowed.  See function details for exact supported options.
  • mixed - when more than one type is allowed, the parameter definition should explain what the options are.

Microseconds are also generally supported by adding a decimal and number of microseconds after seconds.  However, the repository will not store microsecond values yet, so that information will be lost if a timestamp with microseconds is approved, saved or stored to the repository.