Derby
  1. Derby
  2. DERBY-1782

When a privilege is revoked at table level, Derby should only drop objects that require that particular privilege and not all the objects that require some form of privilege on that table.

    Details

    • Type: Bug Bug
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: 10.2.1.6
    • Fix Version/s: None
    • Component/s: SQL
    • Urgency:
      Normal
    • Issue & fix info:
      Repro attached
    • Bug behavior facts:
      Deviation from standard

      Description

      Views/triggers/constraints can depend on different privileges at table level. As per SQL specification, if the required privilege is revoked, the dependent objects(Views, triggers and constraints) should get dropped automatically. Derby 10.2 supports this partially. In Derby 10.2, when any granted privilege is revoked at a table level, all the objects(views, triggers and constraints) that require any kind of privilege on that table get dropped.
      eg
      user1
      create table t1
      grant select, update on t1 to user2
      user2
      create view v1 as select * from user1.t1 – this view requires SELECT privilege on user1.t1 and doesn't rely on UPDATE privilege on user1.t1
      user1
      revoke update on t1 from user2 – in Derby 10.2, this ends up dropping the view user2.v1 even though it does not rely on that particular privilege on user1.t1

      Similar behavior exists for column level privileges. When a privilege is revoked at column level, we should only drop objects that require that privilege on that particular column list. In Derby 10.2, we end up dropping all the objects that rely on that privilege type even though they do not require the particular columns on which privilege is getting revoked.
      eg
      user1
      create table t1(c11 int, c12 int, c13 int)
      grant select(c11,c12) on t1 to user2
      user2
      create view v1 as select c11 from user1.t1
      – the view above requires SELECT privilege on column c11 in user1.t1 and doesn't rely on SELECT privilege on column c12 in user1.t1
      user1
      revoke select(c12) on t1 from user2
      – in Derby 10.2, the above revoke ends up dropping the view user2.v1 even though it does not rely on SELECT privilege on column c12 in user1.t1

      Both of these behavior manifest from how the permission related system tables are designed and how Derby keeps the permission dependency information for the objects. Some solutions for this problem are discussed in DERBY-1539.

      1. repro.sql
        0.4 kB
        Knut Anders Hatlen

        Issue Links

          Activity

          Mamta A. Satoor created issue -
          Mamta A. Satoor made changes -
          Field Original Value New Value
          Link This issue is related to DERBY-1611 [ DERBY-1611 ]
          Mamta A. Satoor made changes -
          Link This issue is related to DERBY-1612 [ DERBY-1612 ]
          Mamta A. Satoor made changes -
          Link This issue is related to DERBY-1539 [ DERBY-1539 ]
          Mamta A. Satoor made changes -
          Link This issue is related to DERBY-1330 [ DERBY-1330 ]
          Mamta A. Satoor made changes -
          Link This issue is related to DERBY-1582 [ DERBY-1582 ]
          Rick Hillegas made changes -
          Urgency Urgent
          Fix Version/s 10.2.1.0 [ 11187 ]
          Mamta A. Satoor made changes -
          Issue Type Improvement [ 4 ] Bug [ 1 ]
          Rick Hillegas made changes -
          Urgency Urgent Normal
          Rick Hillegas made changes -
          Fix Version/s 10.2.1.0 [ 11187 ]
          Fix Version/s 10.2.2.0 [ 12312027 ]
          Yip Ng made changes -
          Link This issue is related to DERBY-1857 [ DERBY-1857 ]
          Rick Hillegas made changes -
          Fix Version/s 10.2.2.0 [ 12312027 ]
          Fix Version/s 10.2.3.0 [ 12312215 ]
          Andrew McIntyre made changes -
          Fix Version/s 10.2.3.0 [ 12312215 ]
          Knut Anders Hatlen made changes -
          Bug behavior facts [Deviation from standard]
          Issue & fix info [Repro attached]
          Knut Anders Hatlen made changes -
          Attachment repro.sql [ 12412980 ]
          Kathey Marsden made changes -
          Labels derby_triage10_5_2
          Gavin made changes -
          Workflow jira [ 12382675 ] Default workflow, editable Closed status [ 12798798 ]
          Knut Anders Hatlen made changes -
          Link This issue is related to DERBY-2041 [ DERBY-2041 ]

            People

            • Assignee:
              Unassigned
              Reporter:
              Mamta A. Satoor
            • Votes:
              1 Vote for this issue
              Watchers:
              0 Start watching this issue

              Dates

              • Created:
                Updated:

                Development