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  1. MariaDB ColumnStore
  2. MCOL-1205

support queries with circular INNER joins

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Blocker
    • Resolution: Fixed
    • 1.0.12
    • 6.1.1
    • ExeMgr
    • None
    • 2018-10, 2018-11, 2018-12, 2018-13, 2018-14, 2018-15, 2018-16, 2021-5, 2021-6, 2021-7, 2021-8, 2021-9

    Description

      Certain types of query will result in the following error:
      ERROR 1815 (HY000) at line 6: Internal error: IDB-1003: Circular joins are not supported.

      This happens if a given table is joined more than once. This is a common pattern and can be generated by bi tools including microstrategy.

      dbt3 query 5 is one such example that should be supported:

      execute the query #5
      		 
       
      		 
      select
      		 
      n_name,
      		 
      sum(l_extendedprice * (1 - l_discount)) as revenue
      		 
      from
      		 
      customer,
      		 
      orders,
      		 
      lineitem,
      		 
      supplier,
      		 
      nation,
      		 
      region
      		 
      where
      		 
      c_custkey = o_custkey
      		 
      and l_orderkey = o_orderkey
      		 
      and l_suppkey = s_suppkey
      		 
      and c_nationkey = s_nationkey
      		 
      and s_nationkey = n_nationkey
      		 
      and n_regionkey = r_regionkey
      		 
      and r_name = 'AMERICA'
      		 
      and o_orderdate >= '1993-01-01'
      		 
      and o_orderdate < date_add( '1993-01-01' , interval 1 year)
      		 
      group by
      		 
      n_name
      		 
      order by
      		 
      revenue desc;

      Attachments

        Issue Links

          blocks

          Bug - A problem which impairs or prevents the functions of the product. MCOL-4530 TPC-H query 19: - semi joins / 'lineitem' and 'part' are not joined.

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

          Task - A task that needs to be done. MCOL-4513 Investigate the original reasons why ColumnStore is flagging "circular joins" as an error, and provide guidance as to how to stop it from happening.

          • Major - Major loss of function.
          • Closed
          is blocked by

          New Feature - A new feature of the product, which has yet to be developed. MCOL-4713 Optimizer statistics

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

          New Feature - A new feature of the product, which has yet to be developed. MCOL-1420 Loos spanning tree check when ON clause contains references to 2 of 3 joined tables.

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MCOL-4902 Views disable certain outer join optimization

          • Major - Major loss of function.
          • Closed
          split to

          New Feature - A new feature of the product, which has yet to be developed. MCOL-4699 support queries with circular OUTER joins

          • Major - Major loss of function.
          • Closed

          Activity

            People

              dleeyh Daniel Lee (Inactive)
              dthompson David Thompson (Inactive)
              Votes:
              8 Vote for this issue
              Watchers:
              12 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

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