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  1. MariaDB Server
  2. MDEV-8320

Allow index usage for DATE(datetime_column) = const

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Details

    • 10.2.2-2, 10.2.2-3, 10.2.2-1, 10.2.2-2, 10.2.2-3, 10.2.2-4, 10.2.3-1, 10.2.3-2

    Description

      Would it be possible to make DATE() on datetime column sargable in some cases?
      Like rewrite "DATE(col) = const" to "col BETWEEN concat(const, ' 00:00:00') AND concat(const, ' 23:59:59')"

      Other similar cases:

      • "YEAR(col) = const" is almost the same
      • "YEAR(col) = c1 AND MONTH(col) = c2" and other such combinations may be too complex to be worth it.

      Attachments

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. MDEV-30901 Index usage for DATE(datetime_column) = const does not work for engine Memory

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-30913 Index usage for DATE(datetime_column) = const does not work for engine Connect

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-30946 Index usage for DATE(datetime_column) = const does not work for DELETE and UPDATE

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-33299 Assertion `(tm->tv_usec % (int) log_10_int[6 - dec]) == 0' failed in void my_timestamp_to_binary(const timeval*, uchar*, uint)

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed
          is duplicated by

          Task - A task that needs to be done. MDEV-8937 Optimize date functions in the parser

          • Major - Major loss of function.
          • Closed
          relates to

          New Feature - A new feature of the product, which has yet to be developed. MDEV-30930 Make more date conditions sargable

          • Major - Major loss of function.
          • Open

          Task - A task that needs to be done. MDEV-14635 Convert date operations on indexed column to sargable equivalents where possible

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

          Activity

            People

              oleg.smirnov Oleg Smirnov
              jkavalik Jiri Kavalik
              Votes:
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              Watchers:
              12 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

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