Document a few more regression test hazards.

Michael Paquier, reviewed by Christian Kruse

diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index 2b955870b9e673884d40a47e83773b2da5708fc6..edb476aa2f8179b2b0b29a80923020bb67e44a2c 100644 (file)
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -125,7 +125,9 @@ gmake installcheck-parallel
 
    The tests will expect to contact the server at the local host and the
    default port number, unless directed otherwise by PGHOST and
-   PGPORT environment variables.
+   PGPORT environment variables.  The tests will be run in a
+   database named regression; any existing database by this name
+   will be dropped.
   
 
   
@@ -147,7 +149,9 @@ gmake installcheck
 
    The contrib modules must have been built and installed first.
    You can also do this in a subdirectory of contrib to run
-   the tests for just one module.
+   the tests for just one module.  Tests of contrib modules will
+   be run in a database named contrib_regression; any existing
+   database by this name will be dropped.
   
   
 
@@ -471,6 +475,18 @@ diff results/random.out expected/random.out
      not worry unless the random test fails repeatedly.
     
    
+
+   
+    Configuration Parameters
+
+    
+     When running the tests against an existing installation, some non-default
+     parameter settings could cause the tests to fail.  For example, the
+     settings described in 
+     could cause plan changes that would affect the results of tests which
+     use EXPLAIN.
+    
+