update for database provider specific migrations

fix issues with live radar

SharedLibraryCore/Migrations/MySql/20180911190823_AddEFAliasNameMaxLength24.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace SharedLibraryCore.Migrations.MySql
+{
+    public partial class AddEFAliasNameMaxLength24 : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            // hack: we can't alter the column on SQLite, but we need max length limit for the Index in MySQL etc
+            if (migrationBuilder.ActiveProvider != "Microsoft.EntityFrameworkCore.Sqlite")
+            {
+                migrationBuilder.AlterColumn<string>(
+                    name: "Name",
+                    table: "EFAlias",
+                    maxLength: 24,
+                    nullable: false);
+            }
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+
+        }
+    }
+}