Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-11594

Crash with aggregate window functions in window definition

Details

    Description

      When the following SQL is executed, the server crashes.

      select avg(1) over (order by avg(1));

      This also crashes with an actual table in the query.

      create table test.t1 (id int);
      		 
      insert into test.t1 values (1), (2), (3);
      		 
      select avg(id) over (order by avg(id)) from test.t1);

      The commit ID the server was built from is c35b8c46b404d035e54a23d667da5dff6502fc2e. I've attached the error log from the crash.

      #3  <signal handler called>
      		 
      #4  JOIN::make_aggr_tables_info (this=this@entry=0x7fac02cf28f8) at /data/src/10.2/sql/sql_select.cc:2713
      		 
      #5  0x00007fac4af421f3 in JOIN::optimize_inner (this=this@entry=0x7fac02cf28f8) at /data/src/10.2/sql/sql_select.cc:1442
      		 
      #6  0x00007fac4af4522f in JOIN::optimize (this=this@entry=0x7fac02cf28f8) at /data/src/10.2/sql/sql_select.cc:1076
      		 
      #7  0x00007fac4af45bd5 in mysql_select (thd=thd@entry=0x7fac02d14070, tables=0x0, wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0x7fac02cf28d8, unit=0x7fac02d17b48, select_lex=0x7fac02d18278) at /data/src/10.2/sql/sql_select.cc:3570
      		 
      #8  0x00007fac4af45e8d in handle_select (thd=thd@entry=0x7fac02d14070, lex=lex@entry=0x7fac02d17a80, result=result@entry=0x7fac02cf28d8, setup_tables_done_option=setup_tables_done_option@entry=0) at /data/src/10.2/sql/sql_select.cc:373
      		 
      #9  0x00007fac4aed6849 in execute_sqlcom_select (thd=thd@entry=0x7fac02d14070, all_tables=0x0) at /data/src/10.2/sql/sql_parse.cc:6347
      		 
      #10 0x00007fac4aedf6d2 in mysql_execute_command (thd=thd@entry=0x7fac02d14070) at /data/src/10.2/sql/sql_parse.cc:3370
      		 
      #11 0x00007fac4aee92d2 in mysql_parse (thd=thd@entry=0x7fac02d14070, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x7fac4bec6910, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /data/src/10.2/sql/sql_parse.cc:7790
      		 
      #12 0x00007fac4aeeb55b in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7fac02d14070, packet=packet@entry=0x7fac02e18071 "select avg(1) over (order by avg(1))", packet_length=packet_length@entry=36, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /data/src/10.2/sql/sql_parse.cc:1799
      		 
      #13 0x00007fac4aeee08d in do_command (thd=0x7fac02d14070) at /data/src/10.2/sql/sql_parse.cc:1359
      		 
      #14 0x00007fac4afdbf4a in do_handle_one_connection (connect=connect@entry=0x7fac48060130) at /data/src/10.2/sql/sql_connect.cc:1354
      		 
      #15 0x00007fac4afdc133 in handle_one_connection (arg=0x7fac48060130) at /data/src/10.2/sql/sql_connect.cc:1260
      		 
      #16 0x00007fac4a5dd0a4 in start_thread (arg=0x7fac4bec8300) at pthread_create.c:309
      		 
      #17 0x00007fac48dfd87d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-11138 Server crashes in JOIN::make_aggr_tables_info on SELECT ROW_NUMBER() OVER ()

          • Major - Major loss of function.
          • Closed

          Activity

            Ascending order - Click to sort in descending order
            elenst Elena Stepanova added a comment -

            Might be related to MDEV-11138

            elenst Elena Stepanova added a comment - Might be related to MDEV-11138
            igor Igor Babaev added a comment -

            Strictly speaking 

            select avg(id) over (order by avg(id)) from test.t1

            is not a valid SQL query according to the Standard, but the following one

            select sum(avg(id)) over (order by avg(id)) from test.t1;

            definitely is and yet it craches.

            Both should not cause a crash though.

            igor Igor Babaev added a comment - Strictly speaking select avg(id) over (order by avg(id)) from test.t1 is not a valid SQL query according to the Standard, but the following one select sum(avg(id)) over (order by avg(id)) from test.t1; definitely is and yet it craches. Both should not cause a crash though.
            igor Igor Babaev added a comment -

            The fix for this bug was pushed into the 10.2 tree.

            igor Igor Babaev added a comment - The fix for this bug was pushed into the 10.2 tree.

            People

              igor Igor Babaev
              markus makela markus makela
              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.