new index in alert_log table (#12143)

* new index in alert_log table

* codefix1

* codefix2

* added second index

* codefix

* Apply suggestions from code review

Co-authored-by: Jellyfrog <Jellyfrog@users.noreply.github.com>

database/migrations/2020_09_22_172321_add_alert_log_index.php

@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddAlertLogIndex extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('alert_log', function (Blueprint $table) {
+            $table->index(['rule_id', 'device_id']);
+            $table->index(['rule_id', 'device_id', 'state']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('alert_log', function (Blueprint $table) {
+            $table->dropIndex(['rule_id', 'device_id']);
+            $table->dropIndex(['rule_id', 'device_id', 'state']);
+        });
+    }
+}

misc/db_schema.yaml

@@ -72,6 +72,8 @@ alert_log:
     alert_log_device_id_index: { Name: alert_log_device_id_index, Columns: [device_id], Unique: false, Type: BTREE }
     alert_log_rule_id_index: { Name: alert_log_rule_id_index, Columns: [rule_id], Unique: false, Type: BTREE }
     alert_log_time_logged_index: { Name: alert_log_time_logged_index, Columns: [time_logged], Unique: false, Type: BTREE }
+    alert_log_rule_id_device_id_index: { Name: alert_log_rule_id_device_id_index, Columns: [rule_id, device_id], Unique: false, Type: BTREE }
+    alert_log_rule_id_device_id_state_index: { Name: alert_log_rule_id_device_id_state_index, Columns: [rule_id, device_id, state], Unique: false, Type: BTREE }
 alert_rules:
   Columns:
     - { Field: id, Type: 'int unsigned', 'Null': false, Extra: auto_increment }