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  1. MariaDB Server
  2. MDEV-10096

Behaviour of SQL_NO_CACHE in derived tables is not consistent

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Details

    • Bug
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • 10.1(EOL), 10.2(EOL), 10.3(EOL), 10.4(EOL)
    • 10.4(EOL)
    • Parser
    • None

    Description

      This script (notice sql_no_cache is used as a column name rather than an option):

      CREATE OR REPLACE TABLE t1 (sql_no_cache INT);
      		 
      SELECT * FROM (SELECT 1 UNION SELECT SQL_NO_CACHE FROM t1) AS t1;

      returns:

      +------+
      		 
      | 1    |
      		 
      +------+
      		 
      |    1 |
      		 
      +------+

      This script:

      CREATE OR REPLACE TABLE t1 (sql_no_cache INT);
      		 
      SELECT * FROM (SELECT SQL_NO_CACHE FROM t1) AS t1;

      returns

      ERROR 1234 (42000): Incorrect usage/placement of 'SQL_NO_CACHE'

      Looks wrong. It should return the result.

      Attachments

        Issue Links

          relates to

          Task - A task that needs to be done. MDEV-8909 union parser cleanup

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

          Activity

            People

              bar Alexander Barkov
              bar Alexander Barkov
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              Dates

                Created:
                Updated:

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