From a8fe168e08a302a170e935d3629b988813f6cf1e Mon Sep 17 00:00:00 2001
From: Derek Henderson <derek.henderson@remote-learner.net>
Date: Tue, 10 Jan 2017 15:08:17 -0500
Subject: [PATCH] MDL-55652 grades: Added timemodified as index grade tables

Added timemodified to grade_categories_history,
grade_items_history, grade_outcomes_history,and scale_history.
---
 lib/db/install.xml |  6 +++++-
 lib/db/upgrade.php | 35 +++++++++++++++++++++++++++++++++++
 version.php        |  2 +-
 3 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/lib/db/install.xml b/lib/db/install.xml
index bd36ac76690..e172216b5b1 100644
--- a/lib/db/install.xml
+++ b/lib/db/install.xml
@@ -815,6 +815,7 @@
       </KEYS>
       <INDEXES>
         <INDEX NAME="action" UNIQUE="false" FIELDS="action" COMMENT="insert/update/delete"/>
+        <INDEX NAME="timemodified" UNIQUE="false" FIELDS="timemodified"/>
       </INDEXES>
     </TABLE>
     <TABLE NAME="stats_daily" COMMENT="to accumulate daily stats">
@@ -1816,6 +1817,7 @@
       </KEYS>
       <INDEXES>
         <INDEX NAME="action" UNIQUE="false" FIELDS="action" COMMENT="insert/update/delete"/>
+        <INDEX NAME="timemodified" UNIQUE="false" FIELDS="timemodified"/>
       </INDEXES>
     </TABLE>
     <TABLE NAME="grade_categories_history" COMMENT="History of grade_categories">
@@ -1848,6 +1850,7 @@
       </KEYS>
       <INDEXES>
         <INDEX NAME="action" UNIQUE="false" FIELDS="action" COMMENT="insert/update/delete"/>
+        <INDEX NAME="timemodified" UNIQUE="false" FIELDS="timemodified"/>
       </INDEXES>
     </TABLE>
     <TABLE NAME="grade_items_history" COMMENT="History of grade_items">
@@ -1898,6 +1901,7 @@
       </KEYS>
       <INDEXES>
         <INDEX NAME="action" UNIQUE="false" FIELDS="action" COMMENT="insert/update/delete"/>
+        <INDEX NAME="timemodified" UNIQUE="false" FIELDS="timemodified"/>
       </INDEXES>
     </TABLE>
     <TABLE NAME="grade_grades_history" COMMENT="History table">
@@ -3721,4 +3725,4 @@
       </INDEXES>
     </TABLE>
   </TABLES>
-</XMLDB>
\ No newline at end of file
+</XMLDB>
diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index d0fb99f05b2..204a8ebb990 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -2601,5 +2601,40 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2017092900.00);
     }
 
+    if ($oldversion < 2017092901.00) {
+        // Add index on time modified to grade_outcomes_history, grade_categories_history,
+        // grade_items_history, and scale_history.
+        $table = new xmldb_table('grade_outcomes_history');
+        $index = new xmldb_index('timemodified', XMLDB_INDEX_NOTUNIQUE, array('timemodified'));
+
+        if (!$dbman->index_exists($table, $index)) {
+            $dbman->add_index($table, $index);
+        }
+
+        $table = new xmldb_table('grade_items_history');
+        $index = new xmldb_index('timemodified', XMLDB_INDEX_NOTUNIQUE, array('timemodified'));
+
+        if (!$dbman->index_exists($table, $index)) {
+            $dbman->add_index($table, $index);
+        }
+
+        $table = new xmldb_table('grade_categories_history');
+        $index = new xmldb_index('timemodified', XMLDB_INDEX_NOTUNIQUE, array('timemodified'));
+
+        if (!$dbman->index_exists($table, $index)) {
+            $dbman->add_index($table, $index);
+        }
+
+        $table = new xmldb_table('scale_history');
+        $index = new xmldb_index('timemodified', XMLDB_INDEX_NOTUNIQUE, array('timemodified'));
+
+        if (!$dbman->index_exists($table, $index)) {
+            $dbman->add_index($table, $index);
+        }
+
+        // Main savepoint reached.
+        upgrade_main_savepoint(true, 2017092901.00);
+    }
+
     return true;
 }
diff --git a/version.php b/version.php
index 5c7c36ee491..3ffa453451f 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2017092900.00;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2017092901.00;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.