fix: move JSON function creation into EF Core migrations to prevent startup failure on restart

backend/src/Squidex.Data.EntityFramework/Providers/MySql/App/Migrations/20260512000000_AddJsonFunctions.cs

@@ -0,0 +1,67 @@
+using System.IO;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Squidex.Providers.MySql;
+
+#nullable disable
+
+namespace Squidex.Providers.MySql.App.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddJsonFunctions : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            var assembly = typeof(MySqlDialect).Assembly;
+
+            using var sqlStream = assembly.GetManifestResourceStream("Squidex.Providers.MySql.json_function.sql")!;
+            using var reader = new StreamReader(sqlStream);
+
+            var sqlText = reader.ReadToEnd();
+            var statements = sqlText.Split(";;", System.StringSplitOptions.RemoveEmptyEntries | System.StringSplitOptions.TrimEntries);
+
+            foreach (var statement in statements)
+            {
+                migrationBuilder.Sql(statement, suppressTransaction: true);
+            }
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            var functions = new[]
+            {
+                "json_empty",
+                "json_exists",
+                "json_null_equals",
+                "json_null_notequals",
+                "json_text_contains",
+                "json_text_endswith",
+                "json_text_equals",
+                "json_text_greaterthan",
+                "json_text_greaterthanorequal",
+                "json_text_in",
+                "json_text_lessthan",
+                "json_text_lessthanorequal",
+                "json_text_matchs",
+                "json_text_notequals",
+                "json_text_startswith",
+                "json_boolean_equals",
+                "json_boolean_in",
+                "json_boolean_notequals",
+                "json_number_equals",
+                "json_number_greaterthan",
+                "json_number_greaterthanorequal",
+                "json_number_in",
+                "json_number_lessthan",
+                "json_number_lessthanorequal",
+                "json_number_notequals",
+            };
+
+            foreach (var function in functions)
+            {
+                migrationBuilder.Sql($"DROP FUNCTION IF EXISTS {function}", suppressTransaction: true);
+            }
+        }
+    }
+}

backend/src/Squidex.Data.EntityFramework/Providers/MySql/JsonFunction.cs

@@ -57,15 +57,8 @@ public static async Task InitializeAsync(DbContext dbContext,
         sqlText = sqlText.Replace("}", "}}", StringComparison.Ordinal);
 
         var statements = sqlText.Split(";;", StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
-        // We want to filter out the drop statements and multiple function creations are not supported.
         foreach (var statement in statements)
         {
-#if RELEASE
-            if (statement.StartsWith("DROP", StringComparison.Ordinal))
-            {
-                continue;
-            }
-#endif
             await dbContext.Database.ExecuteSqlRawAsync(statement, ct);
         }
     }