Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-8754

Wrong result for SELECT..WHERE year_field=2020 AND NULLIF(year_field,2010)='2020'

    XMLWordPrintable

    Details

      Description

      DROP TABLE IF EXISTS t1;
      		 
      CREATE TABLE t1 (a YEAR);
      		 
      INSERT INTO t1 VALUES (2010),(2020);
      		 
      SELECT * FROM t1 WHERE a=2020;
      		 
      SELECT * FROM t1 WHERE NULLIF(a,2010)='2020';
      		 
      SELECT * FROM t1 WHERE a=2020 AND NULLIF(a,2010)='2020';

      The first and the second SELECT queries correctly return one row, and third SELECT query erroneously returns emptu set.

        Attachments

          Issue Links

          blocks

          Bug - A problem which impairs or prevents the functions of the product. MDEV-8728 Fix a number of problems in equal field and equal expression propagation

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-8785 Wrong results for EXPLAIN EXTENDED...WHERE NULLIF(latin1_col, _utf8'a' COLLATE utf8_bin) IS NOT NULL

          • Major - Major loss of function.
          • Closed

            Activity

              People

              Assignee:
              bar Alexander Barkov
              Reporter:
              bar Alexander Barkov
              Votes:
              0 Vote for this issue
              Watchers:
              1 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:

                  Git Integration

                  Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.