More tests.

src/FirebirdSql.EntityFrameworkCore.Firebird.FunctionalTests/Query/AdHocMiscellaneousQueryFbTest.cs

@@ -72,6 +72,12 @@ public override Task Null_check_removal_in_ternary_maintain_appropriate_cast(boo
 		return base.Null_check_removal_in_ternary_maintain_appropriate_cast(async);
 	}
 
+	[NotSupportedOnFirebirdFact]
+	public override Task Operators_combine_nullability_of_entity_shapers()
+	{
+		return base.Operators_combine_nullability_of_entity_shapers();
+	}
+
 	protected override async Task Seed2951(Context2951 context)
 	{
 		await context.Database.ExecuteSqlRawAsync("""CREATE TABLE "ZeroKey" ("Id" INT)""");

src/FirebirdSql.EntityFrameworkCore.Firebird.FunctionalTests/Query/ComplexNavigationsQueryFbTest.cs

@@ -772,6 +772,27 @@ public override Task Nested_SelectMany_correlated_with_join_table_correctly_tran
 		return base.Nested_SelectMany_correlated_with_join_table_correctly_translated_to_apply(async);
 	}
 
+	[NotSupportedOnFirebirdTheory]
+	[MemberData(nameof(IsAsyncData))]
+	public override Task Correlated_projection_with_first(bool async)
+	{
+		return base.Correlated_projection_with_first(async);
+	}
+
+	[NotSupportedOnFirebirdTheory]
+	[MemberData(nameof(IsAsyncData))]
+	public override Task Multiple_select_many_in_projection(bool async)
+	{
+		return base.Multiple_select_many_in_projection(async);
+	}
+
+	[NotSupportedOnFirebirdTheory]
+	[MemberData(nameof(IsAsyncData))]
+	public override Task Single_select_many_in_projection_with_take(bool async)
+	{
+		return base.Single_select_many_in_projection_with_take(async);
+	}
+
 	[Theory]
 	[MemberData(nameof(IsAsyncData))]
 	public override Task GroupJoin_client_method_in_OrderBy(bool async)

src/FirebirdSql.EntityFrameworkCore.Firebird/Storage/Internal/FbDatabaseCreator.cs

@@ -22,6 +22,7 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
 using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
 using Microsoft.EntityFrameworkCore.Storage;
 
 namespace FirebirdSql.EntityFrameworkCore.Firebird.Storage.Internal;
@@ -163,4 +164,21 @@ IRelationalCommand CreateAlterCollationCommand(string collation)
 BEGIN
 	execute statement 'alter character set ' || (select coalesce(trim(rdb$character_set_name), 'NONE') from rdb$database) || ' set default collation {collation}';
 END");
+
+	public override void CreateTables()
+	{
+		// we need to execute commands separately to avoid issues with inserts and transactions after creating a table
+		foreach (var command in GetCreateTablesCommands())
+		{
+			Dependencies.MigrationCommandExecutor.ExecuteNonQuery([command], Dependencies.Connection, new MigrationExecutionState(), commitTransaction: true);
+		}
+	}
+	public override async Task CreateTablesAsync(CancellationToken cancellationToken = default)
+	{
+		// we need to execute commands separately to avoid issues with inserts and transactions after creating a table
+		foreach (var command in GetCreateTablesCommands())
+		{
+			await Dependencies.MigrationCommandExecutor.ExecuteNonQueryAsync([command], Dependencies.Connection, new MigrationExecutionState(), commitTransaction: true, cancellationToken: cancellationToken);
+		}
+	}
 }