Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-23859

view: arithmetic of column is wrong whereas underlying select works correctly

Details

    • Bug
    • Status: Closed (View Workflow)
    • Blocker
    • Resolution: Duplicate
    • 10.4.14, 10.2(EOL), 10.3(EOL), 10.4(EOL), 10.5
    • 10.2.35, 10.3.26, 10.4.16, 10.5.7
    • Views
    • None
    • opensuse tumbleweed x86_64 kernel 5.8.10-1-default

    Description

      calculation of view column is wrong (by factor 1/10000). The column (3rd) is an arithmetic expression with an embedded select.

      ##  create view v1 as select "error" , count(*) cnt , count(*) / (( select count(*) from t1 b where ##  b.c3 = a.c3 ) / 100 ) "%" from t1 a where c1 < 5 group by c3 ;
      		 
      ##  select * from v1 ;
      		 
      ## +-------+-----+------------+
      		 
      ## | error |   4 | 0.00666700 |
      		 
      ## +-------+-----+------------+

      When executing the views underlying select directly, the correct value is returned.

      ## select "ok   " , count(*) cnt , count(*) / (( select count(*) from t1 b where b.c3 = a.c3 ) / 100 ) ## "%" from t1 a where c1 < 5 group by c3 ;
      		 
      ## +-------+-----+---------+
      		 
      ## | ok    |   4 | 66.6667 |
      		 
      ## +-------+-----+---------+

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-23656 view: removal of parentheses results in wrong result

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

          Activity

            People

              serg Sergei Golubchik
              mabmysql mabto
              Votes:
              0 Vote for this issue
              Watchers:
              3 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.