Uploaded image for project: 'Calcite'
  1. Calcite
  2. CALCITE-759

Add DayOfWeek and other missing date/time functions

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • babel

    Description

      Calcite implements EXTRACT, FLOOR, CEIL, CAST, +, - on date/time values and much can be accomplished with these. But there are other useful functions in other databases.

      For example MySQL has DayOfWeek. See https://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html. It is tricky to achieve the same in Calcite (you'd need to subtract the epoch and take the interval modulo 7).

      We need to review the date/time functions in MySQL, Postgres and Oracle, and add functions to ensure that you can accomplish the same things in Calcite fairly easily.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. CALCITE-5180 Implement BigQuery functions for DATE, TIME, TIMESTAMP, DATETIME

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. CALCITE-3412 FLOOR(timestamp TO WEEK) gives wrong result

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. CALCITE-5619 Support PostgreSQL's TO_CHAR function

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Activity

            People

              Unassigned Unassigned
              julianhyde Julian Hyde
              Votes:
              2 Vote for this issue
              Watchers:
              10 Start watching this issue

              Dates

                Created:
                Updated: