add update file for MQTT columns

db/zm_update-1.37.mqtt.sql

@@ -0,0 +1,37 @@
+--
+-- Update Monitors table to have a MQTT_Enabled Column
+--
+
+SELECT 'Checking for MQTT_Enabled in Monitors';
+SET @s = (SELECT IF(
+  (SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE table_name = 'Monitors'
+  AND table_schema = DATABASE()
+  AND column_name = 'MQTT_Enabled'
+  ) > 0,
+"SELECT 'Column MQTT_Enabled already exists in Monitors'",
+"ALTER TABLE Monitors ADD COLUMN `MQTT_Enabled` BOOLEAN NOT NULL DEFAULT false AFTER `Importance`"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;
+
+--
+-- Update Monitors table to have a MQTT_Subscriptions Column
+--
+
+SELECT 'Checking for MQTT_Subscriptions in Monitors';
+SET @s = (SELECT IF(
+  (SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE table_name = 'Monitors'
+  AND table_schema = DATABASE()
+  AND column_name = 'MQTT_Subscriptions'
+  ) > 0,
+"SELECT 'Column MQTT_Subscriptions already exists in Monitors'",
+"ALTER TABLE Monitors ADD COLUMN `MQTT_Subscriptions` varchar(255) NOT NULL default '' AFTER `MQTT_Enabled`"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;