mirror of https://github.com/postgres/postgres
1c72a8a37a
WHERE in a place where it can be part of a nestloop inner indexqual. As the code stood, it put the same physical sub-Plan node into both indxqual and indxqualorig of the IndexScan plan node. That confused later processing in the optimizer (which expected that tracing the subPlan list would visit each subplan node exactly once), and would probably have blown up in the executor if the planner hadn't choked first. Fix by making the 'fixed' indexqual be a complete deep copy of the original indexqual, rather than trying to share nodes below the topmost operator node. This had further ramifications though, because we were making the aforesaid list of sub-Plan nodes during SS_process_sublinks which is run before construction of the 'fixed' indexqual, meaning that the copy of the sub-Plan didn't show up in that list. Fix by rearranging logic so that the sub-Plan list is built by the final set_plan_references pass, not in SS_process_sublinks. This may sound like a mess, but it's actually a good deal cleaner now than it was before, because we are no longer dependent on the assumption that planning will never make a copy of a sub-Plan node. |
||
|---|---|---|
| contrib | ||
| doc | ||
| src | ||
| COPYRIGHT | ||
| HISTORY | ||
| INSTALL | ||
| README | ||
| register.txt | ||
README
PostgreSQL Data Base Management System (formerly known as Postgres, then as Postgres95). This directory contains the development version of 6.6 of the PostgreSQL database server. The server is not ANSI SQL compliant, but it gets closer with every release. After you unzip and untar the distribution file, look at file INSTALL for the installation notes and file HISTORY for the changes. The latest version of this software may be obtained at ftp://ftp.postgresql.org/pub/. For more information look at our WWW home page located at http://www.postgreSQL.org/. PostgreSQL is not public domain software. It is copyrighted by the University of California but may be used according to the licensing terms of the the copyright below: ------------------------------------------------------------------------ POSTGRES95 Data Base Management System (formerly known as Postgres, then as Postgres95). Copyright (c) 1994-7 Regents of the University of California Permission to use, copy, modify, and distribute this software and its documentation for any purpose, without fee, and without a written agreement is hereby granted, provided that the above copyright notice and this paragraph and the following two paragraphs appear in all copies. IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.