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  1. MariaDB ColumnStore
  2. MCOL-5143

Query on Columnstore table causes Signal 6 crash

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    • Task
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • None
    • Icebox
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    Description

      drop schema if exists ztest;
      create schema if not exists ztest;
      use ztest;
      CREATE TABLE `wtest` ( `ddate` date NOT NULL ) ENGINE=Columnstore DEFAULT CHARSET=utf8mb4;
      insert into wtest values (now());
       
      select * from ztest.wtest dd
      where
      `ddate` between
        case
        when curdate() <= str_to_date(concat(year(curdate()),'-',quarter(curdate()) * 3 - 2,'-10'), '%Y-%c-%d') then
           str_to_date(concat(year(curdate()),'-',quarter(curdate()) * 3 - 2,'-01'), '%Y-%c-%d') - interval 1 quarter
        else
           str_to_date(concat(year(curdate()),'-',quarter(curdate()) * 3 - 2,'-01'), '%Y-%c-%d')
        end
      and
        case
          when curdate() <= str_to_date(concat(year(curdate()),'-',quarter(curdate()) * 3 - 2,'-10'), '%Y-%c-%d') then
          str_to_date(concat(year(curdate()),'-',quarter(curdate()) * 3 - 2,'-01'), '%Y-%c-%d') - interval 1 second
        else
          now()
        end;
        
      ERROR 2013 (HY000): Lost connection to server during query
       
      In error log:
      220617 21:19:33 [ERROR] mysqld got signal 6 ;
      

      Here is a more simplified query that also crashes the database:

      select * from ztest.wtest dd
      where
      `ddate` between
        case
        when curdate()=now() then
           now()-interval 1 day
        else
           now()
        end
      and
        now();
        
      ERROR 2013 (HY000): Lost connection to server during query
      

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            Unassigned Unassigned
            edward Edward Stoever
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              Updated:

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