|
Problem IT05226
|
Status: Closed |
INNER JOIN ON A VIEW ON A REMOTE TABLE AND IFX_FOLDVIEW=1 CREATES A TEMP TABLE FOR THE VIEW |
| product: |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 |
| Problem description: |
A "SELECT .... FROM view_a INNER JOIN view_b ON view_a.col1 =
view_a.col2"
creates a temp table for the view which fills the temp dbspaces
and takes much longer.
A "SELECT .... FROM view_a, view_b WHERE view_a.col1 =
view_a.col2"
has a good query plan.
INNER JOIN gets the same good queryplan with IFX_FOLDVIEW=0 |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Users of 12.10.xC1 through 12.10.xC4. *
****************************************************************
* PROBLEM DESCRIPTION: *
* A query with multiple view references may result in *
* unnecessary view materialization under the following *
* conditions: *
* - query references at least two views, and has no remote *
* references in query itself *
* - both views are simple and have references to remote *
* table *
* - main query is in ANSI INNER JOIN format *
****************************************************************
* RECOMMENDATION: *
* Update to IDS-12.10.xC5 *
**************************************************************** |
| Local Fix: |
|
| Solution |
Problem Fixed In IDS-12.10.xC5 |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 28.10.2014
16.10.2015
16.10.2015 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 12.10.xC5
|
 |
| 12.10.xC5.W1
|
|
