Remove FOREIGN KEYS on Events table for performance/reliability

db/zm_create.sql.in

@@ -331,7 +331,7 @@ DROP TABLE IF EXISTS `Frames`;
 CREATE TABLE `Frames` (
   `Id` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
   `EventId` BIGINT UNSIGNED NOT NULL default '0',
-  FOREIGN KEY (`EventId`) REFERENCES `Events` (`Id`) ON DELETE CASCADE,
+  /* FOREIGN KEY (`EventId`) REFERENCES `Events` (`Id`) ON DELETE CASCADE,*/
   `FrameId` int(10) unsigned NOT NULL default '0',
   `Type` enum('Normal','Bulk','Alarm') NOT NULL default 'Normal',
   `TimeStamp` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
@@ -696,11 +696,11 @@ DROP TABLE IF EXISTS `Stats`;
 CREATE TABLE `Stats` (
   `Id` int(10) unsigned NOT NULL AUTO_INCREMENT,
   `MonitorId` int(10) unsigned NOT NULL default '0',
-  FOREIGN KEY (`MonitorId`) REFERENCES `Monitors` (`Id`) ON DELETE CASCADE,
+  /* FOREIGN KEY (`MonitorId`) REFERENCES `Monitors` (`Id`) ON DELETE CASCADE, */
   `ZoneId` int(10) unsigned NOT NULL default '0',
-  FOREIGN KEY (`ZoneId`) REFERENCES `Zones` (`Id`) ON DELETE CASCADE,
+  /* FOREIGN KEY (`ZoneId`) REFERENCES `Zones` (`Id`) ON DELETE CASCADE, */
   `EventId` BIGINT UNSIGNED NOT NULL,
-  FOREIGN KEY (`EventId`) REFERENCES `Events` (`Id`) ON DELETE CASCADE,
+  /* FOREIGN KEY (`EventId`) REFERENCES `Events` (`Id`) ON DELETE CASCADE, */
   `FrameId` int(10) unsigned NOT NULL default '0',
   `PixelDiff` tinyint(3) unsigned NOT NULL default '0',
   `AlarmPixels` int(10) unsigned NOT NULL default '0',

db/zm_update-1.37.31.sql

@@ -0,0 +1,76 @@
+--
+-- Drop Foreign Keys on Events table.
+--
+
+SELECT 'Checking for FOREIGN KEYS on Events Table';
+SET @s = (SELECT IF(
+  (SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+  WHERE TABLE_NAME = 'Frames'
+  AND REFERENCED_TABLE_SCHEMA = DATABASE()
+  AND REFERENCED_TABLE_NAME = 'Events'
+  AND CONSTRAINT_NAME = 'Frames_ibfk_1'
+  ) > 0,
+"ALTER TABLE Frames DROP FOREIGN KEY Frames_ibfk_1",
+"SELECT 'FOREIGN KEY In Frames table already removed or has a different name.'"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;
+
+SET @s = (SELECT IF(
+  (SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+  WHERE TABLE_NAME = 'Stats'
+  AND REFERENCED_tABLE_SCHEMA = DATABASE()
+  AND REFERENCED_TABLE_NAME = 'Events'
+  AND CONSTRAINT_NAME = 'Stats_ibfk_1'
+  ) > 0,
+"ALTER TABLE Stats DROP FOREIGN KEY Stats_ibfk_1",
+"SELECT 'FOREIGN KEY In Stats table already removed or has a different name.'"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;
+
+SET @s = (SELECT IF(
+  (SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+  WHERE TABLE_NAME = 'Stats'
+  AND REFERENCED_tABLE_SCHEMA = DATABASE()
+  AND REFERENCED_TABLE_NAME = 'Events'
+  AND CONSTRAINT_NAME = 'Stats_ibfk_2'
+  ) > 0,
+"ALTER TABLE Stats DROP FOREIGN KEY Stats_ibfk_2",
+"SELECT 'FOREIGN KEY In Stats table already removed or has a different name.'"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;
+
+SET @s = (SELECT IF(
+  (SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+  WHERE TABLE_NAME = 'Stats'
+  AND REFERENCED_tABLE_SCHEMA = DATABASE()
+  AND REFERENCED_TABLE_NAME = 'Events'
+  AND CONSTRAINT_NAME = 'Stats_ibfk_3'
+  ) > 0,
+"ALTER TABLE Stats DROP FOREIGN KEY Stats_ibfk_3",
+"SELECT 'FOREIGN KEY In Stats table already removed or has a different name.'"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;
+
+SET @s = (SELECT IF(
+  (SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+  WHERE TABLE_NAME = 'Stats'
+  AND REFERENCED_tABLE_SCHEMA = DATABASE()
+  AND REFERENCED_TABLE_NAME = 'Events'
+  AND CONSTRAINT_NAME = 'Stats_ibfk_4'
+  ) > 0,
+"ALTER TABLE Stats DROP FOREIGN KEY Stats_ibfk_4",
+"SELECT 'FOREIGN KEY In Stats table already removed or has a different name.'"
+));

distros/redhat/zoneminder.spec

@@ -24,7 +24,7 @@
 %endif
 
 Name: zoneminder
-Version: 1.37.30
+Version: 1.37.31
 Release: 1%{?dist}
 Summary: A camera monitoring and analysis tool
 Group: System Environment/Daemons

version

@@ -1 +1 @@
-1.37.30
+1.37.31