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  1. MariaDB Server
  2. MDEV-10142 PL/SQL parser
  3. MDEV-12143

sql_mode=ORACLE: Make the CONCAT function ignore NULL arguments

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    • 10.2.2-3, 10.2.2-1, 10.2.2-2, 10.2.2-4, 10.1.18

    Description

      Under terms of MDEV-11880, we fixed the concatenation operator || to ignore NULL arguments.

      In addition to the concatenation operator, Oracle has also the function CONCAT with two arguments, so these two queries should be equivalent:

      SELECT a||b FROM t1;
      		 
      SELECT CONCAT(a,b) FROM t1;

      The patch for MDEV-11880 changed only behavior of the concatenation operator ||.
      Under terms of this task we'll also change CONCAT to ignore NULL arguments.

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-12076 CONCAT behavior with NULL is different to Oracle

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

          Technical task - A technical task. MDEV-11880 sql_mode=ORACLE: Make the concatenation operator ignore NULL arguments

          • Major - Major loss of function.
          • Closed

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              bar Alexander Barkov
              bar Alexander Barkov
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                Created:
                Updated:
                Resolved:

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