add Encoder to Monitors

db/zm_update-1.31.40.sql

@@ -0,0 +1,14 @@
+ALTER TABLE `Monitors` MODIFY `OutputCodec`     int(10) UNSIGNED NOT NULL default 0;
+
+SET @s = (SELECT IF(
+    (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE table_schema = DATABASE()
+     AND table_name = 'Monitors'
+     AND column_name = 'Encoder'
+    ) > 0,
+"SELECT 'Column Encoder already exists in Monitors'",
+"ALTER TABLE `Monitors` ADD `Encoder`     enum('auto','h264','h264_omx','mjpeg','mpeg1','mpeg2')  AFTER `OutputCodec`"
+));
+
+PREPARE stmt FROM @s;
+EXECUTE stmt;
+