feat: 统一表为utf8mb4_unicode_ci

database/migrations/2024_02_18_105804_change_charset_to_utf8mb4.php

@@ -0,0 +1,44 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\Schema;
+
+class ChangeCharsetToUtf8mb4 extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $pre = DB::connection()->getTablePrefix();
+        $tables = [
+            "approve_execution",
+            "approve_execution_history",
+            "approve_identitylink",
+            "approve_identitylink_history",
+            "approve_proc_inst",
+            "approve_proc_inst_history",
+            "approve_proc_msgs",
+            "approve_procdef",
+            "approve_procdef_history",
+            "approve_task",
+            "approve_task_history"
+        ];
+        foreach ($tables as $table) {
+            if (Schema::hasTable($table)) {
+                Schema::getConnection()->getPdo()->exec("ALTER TABLE `{$pre}{$table}` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
+            }
+        }
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+    }
+}