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  1. MariaDB Server
  2. MDEV-8754

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

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.

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          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

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            bar Alexander Barkov created issue -
            bar Alexander Barkov made changes -
            Field Original Value New Value
            bar Alexander Barkov made changes -
            Summary Wromg result for SELECT..WHERE year_field=2020 AND NULLIF(year_field,2010)='2020' Wrong result for SELECT..WHERE year_field=2020 AND NULLIF(year_field,2010)='2020'
            bar Alexander Barkov made changes -
            bar Alexander Barkov made changes -
            Fix Version/s 10.1.8 [ 19605 ]
            Fix Version/s 10.1 [ 16100 ]
            Resolution Fixed [ 1 ]
            Status Open [ 1 ] Closed [ 6 ]
            bar Alexander Barkov made changes -
            Labels propagation
            bar Alexander Barkov made changes -
            Labels propagation propagation upstream-not-affected
            serg Sergei Golubchik made changes -
            Workflow MariaDB v3 [ 71363 ] MariaDB v4 [ 149576 ]

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              bar Alexander Barkov
              bar Alexander Barkov
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              Dates

                Created:
                Updated:
                Resolved:

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