Added comments to the PS test files, to prevent modifications which may destroy the tests .

mysql-test/include/ps_create.inc

@@ -1,9 +1,23 @@
 ############### include/ps_create.inc ##################
 #                                                      #
 #  drop + create the tables used in most PS test cases #
+#         t/ps_*.test                                  #
 #                                                      #
 ########################################################
 
+#    
+# NOTE: PLEASE SEE ps_1general.test (bottom) 
+#       BEFORE ADDING NEW TABLES HERE !!!
+#
+# Please be aware, that this file will be sourced by several
+# test case files stored within the subdirectory 't'.
+# So every change here will affect several test cases.
+
+#----------- Please insert your table definitions here ----------#
+
+
+#---- Please do not alter the following table definitions -------#
+
 --disable_warnings
 drop table if exists t1, t_many_col_types ;
 --enable_warnings

mysql-test/include/ps_modify.inc

@@ -4,6 +4,38 @@
 #                                                            #
 ##############################################################
 
+#    
+# NOTE: PLEASE SEE ps_1general.test (bottom) 
+#       BEFORE ADDING NEW TEST CASES HERE !!!
+
+#
+# Please be aware, that this file will be sourced by several test case files
+# stored within the subdirectory 't'. So every change here will affect 
+# several test cases.
+#
+# Please do not modify the structure (DROP/ALTER..) of the tables
+#     't1' and 't_many_col_types'. 
+#
+# But you are encouraged to use these two tables within your statements
+# whenever possible. 
+#     t1               - very simple table
+#     t_many_col_types - table with nearly all available column types
+#
+# The structure and the content of these tables can be found in
+#     include/ps_create.inc  CREATE TABLE ...
+#     include/ps_renew.inc   DELETE all rows and INSERT some rows
+#
+# Both tables are managed by the same storage engine.
+# The type of the storage engine is stored in the variable '$type' . 
+
+
+
+#------------------- Please insert your test cases here -------------------#
+
+
+
+#-------- Please be very carefull when editing behind this line  ----------#
+
 --disable_query_log
 select '------ delete tests ------' as test_sequence ;
 --enable_query_log

mysql-test/include/ps_modify1.inc

@@ -4,6 +4,43 @@
 #                                                            #
 ##############################################################
 
+#
+# NOTE: THESE TESTS CANNOT BE APPLIED TO TABLES OF TYPE MERGE.
+#       Test which can be applied to MERGE tables should be stored in
+#            include/ps_modify.inc .
+#
+
+#    
+# NOTE: PLEASE SEE ps_1general.test (bottom) 
+#       BEFORE ADDING NEW TEST CASES HERE !!!
+
+#
+# Please be aware, that this file will be sourced by several test case files
+# stored within the subdirectory 't'. So every change here will affect 
+# several test cases.
+#
+# Please do not modify the structure (DROP/ALTER..) of the tables
+#     't1' and 't_many_col_types'. 
+#
+# But you are encouraged to use these two tables within your statements
+# (DELETE/UPDATE/...) whenever possible. 
+#     t1               - very simple table
+#     t_many_col_types - table with nearly all available column types
+#
+# The structure and the content of these tables can be found in
+#     include/ps_create.inc  CREATE TABLE ...
+#     include/ps_renew.inc   DELETE all rows and INSERT some rows
+#
+# Both tables are managed by the same storage engine.
+# The type of the storage engine is stored in the variable '$type' . 
+
+
+
+#------------------- Please insert your test cases here -------------------#
+
+
+#-------- Please be very carefull when editing behind this line  ----------#
+
 ## big insert select statements
 set @duplicate='duplicate ' ;
 set @1000=1000 ;

mysql-test/include/ps_query.inc

@@ -4,10 +4,39 @@
 #                                                            #
 ##############################################################
 
+#    
+# NOTE: PLEASE SEE ps_1general.test (bottom) 
+#       BEFORE ADDING NEW TEST CASES HERE !!!
 
-# Please do not modify (INSERT/UPDATE/DELETE) the content of the tables
-#     t1 and t_many_col_types. 
-# Such tests should be done in include/ps_modify.inc
+#
+# Please be aware, that this file will be sourced by several test case files
+# stored within the subdirectory 't'. So every change here will affect 
+# several test cases.
+#
+# Please do not modify (INSERT/UPDATE/DELETE) the content or the 
+# structure (DROP/ALTER..) of the tables
+#     't1' and 't_many_col_types'. 
+# Such tests should be done in include/ps_modify.inc .
+#
+# But you are encouraged to use these two tables within your SELECT statements
+# whenever possible. 
+#     t1               - very simple table
+#     t_many_col_types - table with nearly all available column types
+#
+# The structure and the content of these tables can be found in
+#     include/ps_create.inc  CREATE TABLE ...
+#     include/ps_renew.inc   DELETE all rows and INSERT some rows
+#
+# Both tables are managed by the same storage engine.
+# The type of the storage engine is stored in the variable '$type' . 
+
+
+
+#------------------- Please insert your test cases here -------------------#
+
+
+
+#-------- Please be very carefull when editing behind this line  ----------#
 
 --disable_query_log
 select '------ simple select tests ------' as test_sequence ;