diff --git a/src/Type/Doctrine/Query/QueryResultDynamicReturnTypeExtension.php b/src/Type/Doctrine/Query/QueryResultDynamicReturnTypeExtension.php
index 7d047768..96b3f7bc 100644
--- a/src/Type/Doctrine/Query/QueryResultDynamicReturnTypeExtension.php
+++ b/src/Type/Doctrine/Query/QueryResultDynamicReturnTypeExtension.php
@@ -10,6 +10,7 @@
 use PHPStan\ShouldNotHappenException;
 use PHPStan\Type\Accessory\AccessoryArrayListType;
 use PHPStan\Type\ArrayType;
+use PHPStan\Type\BenevolentUnionType;
 use PHPStan\Type\Constant\ConstantIntegerType;
 use PHPStan\Type\Doctrine\ObjectMetadataResolver;
 use PHPStan\Type\DynamicMethodReturnTypeExtension;
@@ -21,6 +22,7 @@
 use PHPStan\Type\Type;
 use PHPStan\Type\TypeCombinator;
 use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\TypeUtils;
 use PHPStan\Type\TypeWithClassName;
 use PHPStan\Type\VoidType;
 use function count;
@@ -156,7 +158,12 @@ private function getMethodReturnTypeForHydrationMode(
 			case 'getSingleResult':
 				return $queryResultType;
 			case 'getOneOrNullResult':
-				return TypeCombinator::addNull($queryResultType);
+				$nullableQueryResultType = TypeCombinator::addNull($queryResultType);
+				if ($queryResultType instanceof BenevolentUnionType) {
+					$nullableQueryResultType = TypeUtils::toBenevolentUnion($nullableQueryResultType);
+				}
+
+				return $nullableQueryResultType;
 			case 'toIterable':
 				return new IterableType(
 					$queryKeyType->isNull()->yes() ? new IntegerType() : $queryKeyType,
diff --git a/src/Type/Doctrine/Query/QueryResultTypeWalker.php b/src/Type/Doctrine/Query/QueryResultTypeWalker.php
index c98604b2..b1ff71f5 100644
--- a/src/Type/Doctrine/Query/QueryResultTypeWalker.php
+++ b/src/Type/Doctrine/Query/QueryResultTypeWalker.php
@@ -106,6 +106,9 @@ class QueryResultTypeWalker extends SqlWalker
 	/** @var bool */
 	private $hasGroupByClause;
 
+	/** @var bool */
+	private $hasWhereClause;
+
 	/**
 	 * @param Query<mixed> $query
 	 */
@@ -134,6 +137,7 @@ public function __construct($query, $parserResult, array $queryComponents)
 		$this->nullableQueryComponents = [];
 		$this->hasAggregateFunction = false;
 		$this->hasGroupByClause = false;
+		$this->hasWhereClause = false;
 
 		// The object is instantiated by Doctrine\ORM\Query\Parser, so receiving
 		// dependencies through the constructor is not an option. Instead, we
@@ -176,6 +180,7 @@ public function walkSelectStatement(AST\SelectStatement $AST)
 		$this->typeBuilder->setSelectQuery();
 		$this->hasAggregateFunction = $this->hasAggregateFunction($AST);
 		$this->hasGroupByClause = $AST->groupByClause !== null;
+		$this->hasWhereClause = $AST->whereClause !== null;
 
 		$this->walkFromClause($AST->fromClause);
 
@@ -794,7 +799,7 @@ public function walkSelectExpression($selectExpression)
 
 			$type = $this->resolveDoctrineType($typeName, $enumType, $nullable);
 
-			$this->typeBuilder->addScalar($resultAlias, $type);
+			$this->addScalar($resultAlias, $type);
 
 			return '';
 		}
@@ -840,21 +845,32 @@ public function walkSelectExpression($selectExpression)
 				// the driver and PHP version.
 				// Here we assume that the value may or may not be casted to
 				// string by the driver.
-				$type = TypeTraverser::map($type, static function (Type $type, callable $traverse): Type {
+				$casted = false;
+				$originalType = $type;
+
+				$type = TypeTraverser::map($type, static function (Type $type, callable $traverse) use (&$casted): Type {
 					if ($type instanceof UnionType || $type instanceof IntersectionType) {
 						return $traverse($type);
 					}
 					if ($type instanceof IntegerType || $type instanceof FloatType) {
+						$casted = true;
 						return TypeCombinator::union($type->toString(), $type);
 					}
 					if ($type instanceof BooleanType) {
+						$casted = true;
 						return TypeCombinator::union($type->toInteger()->toString(), $type);
 					}
 					return $traverse($type);
 				});
+
+				// Since we made supposition about possibly casted values,
+				// we can only provide a benevolent union.
+				if ($casted && $type instanceof UnionType && !$originalType->equals($type)) {
+					$type = TypeUtils::toBenevolentUnion($type);
+				}
 			}
 
-			$this->typeBuilder->addScalar($resultAlias, $type);
+			$this->addScalar($resultAlias, $type);
 
 			return '';
 		}
@@ -1275,6 +1291,21 @@ public function walkResultVariable($resultVariable)
 		return $this->marshalType(new MixedType());
 	}
 
+	/**
+	 * @param array-key $alias
+	 */
+	private function addScalar($alias, Type $type): void
+	{
+		// Since we don't check the condition inside the WHERE
+		// conditions, we cannot be sure all the union types are correct.
+		// For exemple, a condition `WHERE foo.bar IS NOT NULL` could be added.
+		if ($this->hasWhereClause && $type instanceof UnionType) {
+			$type = TypeUtils::toBenevolentUnion($type);
+		}
+
+		$this->typeBuilder->addScalar($alias, $type);
+	}
+
 	private function unmarshalType(string $marshalledType): Type
 	{
 		$type = unserialize($marshalledType);
diff --git a/tests/Type/Doctrine/Query/QueryResultTypeWalkerTest.php b/tests/Type/Doctrine/Query/QueryResultTypeWalkerTest.php
index e880b56a..cea058d0 100644
--- a/tests/Type/Doctrine/Query/QueryResultTypeWalkerTest.php
+++ b/tests/Type/Doctrine/Query/QueryResultTypeWalkerTest.php
@@ -28,7 +28,7 @@
 use PHPStan\Type\StringType;
 use PHPStan\Type\Type;
 use PHPStan\Type\TypeCombinator;
-use PHPStan\Type\UnionType;
+use PHPStan\Type\TypeUtils;
 use PHPStan\Type\VerbosityLevel;
 use QueryResult\Entities\Embedded;
 use QueryResult\Entities\JoinedChild;
@@ -441,6 +441,25 @@ public function getTestData(): iterable
 			',
 		];
 
+		yield 'scalar with where condition' => [
+			$this->constantArray([
+				[new ConstantStringType('intColumn'), new IntegerType()],
+				[new ConstantStringType('stringColumn'), new StringType()],
+				[
+					new ConstantStringType('stringNullColumn'),
+					TypeUtils::toBenevolentUnion(TypeCombinator::addNull(new StringType())),
+				],
+				[new ConstantStringType('datetimeColumn'), new ObjectType(DateTime::class)],
+				[new ConstantStringType('datetimeImmutableColumn'), new ObjectType(DateTimeImmutable::class)],
+			]),
+			'
+				SELECT		m.intColumn, m.stringColumn, m.stringNullColumn,
+							m.datetimeColumn, m.datetimeImmutableColumn
+				FROM		QueryResult\Entities\Many m
+				WHERE       m.stringNullColumn IS NOT NULL
+			',
+		];
+
 		yield 'scalar with alias' => [
 			$this->constantArray([
 				[new ConstantStringType('i'), new IntegerType()],
@@ -543,12 +562,12 @@ public function getTestData(): iterable
 					],
 					[
 						new ConstantIntegerType(2),
-						TypeCombinator::union(
+						TypeUtils::toBenevolentUnion(TypeCombinator::union(
 							new ConstantIntegerType(1),
 							new ConstantIntegerType(2),
 							new ConstantStringType('1'),
 							new ConstantStringType('2')
-						),
+						)),
 					],
 					[
 						new ConstantIntegerType(3),
@@ -595,7 +614,7 @@ public function getTestData(): iterable
 				],
 				[
 					new ConstantIntegerType(1),
-					TypeCombinator::addNull($this->intStringified()),
+					$this->intStringified(true),
 				],
 				[
 					new ConstantIntegerType(2),
@@ -609,7 +628,7 @@ public function getTestData(): iterable
 				],
 				[
 					new ConstantIntegerType(4),
-					TypeCombinator::addNull($this->intStringified()),
+					$this->intStringified(true),
 				],
 				[
 					new ConstantIntegerType(5),
@@ -619,7 +638,7 @@ public function getTestData(): iterable
 				],
 				[
 					new ConstantIntegerType(6),
-					TypeCombinator::addNull($this->intStringified()),
+					$this->intStringified(true),
 				],
 				[
 					new ConstantIntegerType(7),
@@ -645,7 +664,7 @@ public function getTestData(): iterable
 				],
 				[
 					new ConstantStringType('max'),
-					TypeCombinator::addNull($this->intStringified()),
+					$this->intStringified(true),
 				],
 				[
 					new ConstantStringType('arithmetic'),
@@ -677,10 +696,10 @@ public function getTestData(): iterable
 			$this->constantArray([
 				[
 					new ConstantIntegerType(1),
-					TypeCombinator::union(
+					TypeUtils::toBenevolentUnion(TypeCombinator::union(
 						new ConstantStringType('1'),
 						new ConstantIntegerType(1)
-					),
+					)),
 				],
 				[new ConstantIntegerType(2), new ConstantStringType('hello')],
 			]),
@@ -694,11 +713,11 @@ public function getTestData(): iterable
 			$this->constantArray([
 				[
 					new ConstantIntegerType(1),
-					TypeCombinator::union(
+					TypeUtils::toBenevolentUnion(TypeCombinator::union(
 						new ConstantIntegerType(1),
 						new ConstantStringType('1'),
 						new NullType()
-					),
+					)),
 				],
 			]),
 			'
@@ -780,12 +799,12 @@ public function getTestData(): iterable
 			$this->constantArray([
 				[
 					new ConstantIntegerType(1),
-					TypeCombinator::union(
+					TypeUtils::toBenevolentUnion(TypeCombinator::union(
 						new ConstantIntegerType(0),
 						new ConstantIntegerType(1),
 						new ConstantStringType('0'),
 						new ConstantStringType('1')
-					),
+					)),
 				],
 			]),
 			'
@@ -801,12 +820,12 @@ public function getTestData(): iterable
 			$this->constantArray([
 				[
 					new ConstantIntegerType(1),
-					TypeCombinator::union(
+					TypeUtils::toBenevolentUnion(TypeCombinator::union(
 						new ConstantIntegerType(0),
 						new ConstantIntegerType(1),
 						new ConstantStringType('0'),
 						new ConstantStringType('1')
-					),
+					)),
 				],
 			]),
 			'
@@ -822,31 +841,31 @@ public function getTestData(): iterable
 			$this->constantArray([
 				[
 					new ConstantIntegerType(1),
-					TypeCombinator::union(
+					TypeUtils::toBenevolentUnion(TypeCombinator::union(
 						new ConstantIntegerType(1),
 						new ConstantStringType('1')
-					),
+					)),
 				],
 				[
 					new ConstantIntegerType(2),
-					TypeCombinator::union(
+					TypeUtils::toBenevolentUnion(TypeCombinator::union(
 						new ConstantIntegerType(0),
 						new ConstantStringType('0')
-					),
+					)),
 				],
 				[
 					new ConstantIntegerType(3),
-					TypeCombinator::union(
+					TypeUtils::toBenevolentUnion(TypeCombinator::union(
 						new ConstantIntegerType(1),
 						new ConstantStringType('1')
-					),
+					)),
 				],
 				[
 					new ConstantIntegerType(4),
-					TypeCombinator::union(
+					TypeUtils::toBenevolentUnion(TypeCombinator::union(
 						new ConstantIntegerType(0),
 						new ConstantStringType('0')
-					),
+					)),
 				],
 			]),
 			'
@@ -1018,10 +1037,10 @@ public function getTestData(): iterable
 					],
 					[
 						new ConstantIntegerType(2),
-						TypeCombinator::union(
+						TypeUtils::toBenevolentUnion(TypeCombinator::union(
 							new ConstantIntegerType(1),
 							new ConstantStringType('1')
-						),
+						)),
 					],
 					[
 						new ConstantStringType('intColumn'),
@@ -1065,7 +1084,7 @@ public function getTestData(): iterable
 
 		yield 'new arguments affect scalar counter' => [
 			$this->constantArray([
-				[new ConstantIntegerType(5), TypeCombinator::addNull($this->intStringified())],
+				[new ConstantIntegerType(5), $this->intStringified(true)],
 				[new ConstantIntegerType(0), new ObjectType(ManyId::class)],
 				[new ConstantIntegerType(1), new ObjectType(OneId::class)],
 			]),
@@ -1082,7 +1101,7 @@ public function getTestData(): iterable
 				[new ConstantStringType('intColumn'), new IntegerType()],
 				[new ConstantIntegerType(1), $this->intStringified()],
 				[new ConstantIntegerType(2), $this->intStringified()],
-				[new ConstantIntegerType(3), TypeCombinator::addNull($this->intStringified())],
+				[new ConstantIntegerType(3), $this->intStringified(true)],
 				[new ConstantIntegerType(4), $this->intStringified()],
 				[new ConstantIntegerType(5), $this->intStringified()],
 				[new ConstantIntegerType(6), $this->numericStringified()],
@@ -1104,9 +1123,9 @@ public function getTestData(): iterable
 		yield 'abs function' => [
 			$this->constantArray([
 				[new ConstantIntegerType(1), $this->unumericStringified()],
-				[new ConstantIntegerType(2), TypeCombinator::addNull($this->unumericStringified())],
+				[new ConstantIntegerType(2), $this->unumericStringified(true)],
 				[new ConstantIntegerType(3), $this->unumericStringified()],
-				[new ConstantIntegerType(4), TypeCombinator::union($this->unumericStringified())],
+				[new ConstantIntegerType(4), $this->unumericStringified()],
 			]),
 			'
 				SELECT		ABS(m.intColumn),
@@ -1120,7 +1139,7 @@ public function getTestData(): iterable
 		yield 'bit_and function' => [
 			$this->constantArray([
 				[new ConstantIntegerType(1), $this->uintStringified()],
-				[new ConstantIntegerType(2), TypeCombinator::addNull($this->uintStringified())],
+				[new ConstantIntegerType(2), $this->uintStringified(true)],
 				[new ConstantIntegerType(3), $this->uintStringified()],
 			]),
 			'
@@ -1134,7 +1153,7 @@ public function getTestData(): iterable
 		yield 'bit_or function' => [
 			$this->constantArray([
 				[new ConstantIntegerType(1), $this->uintStringified()],
-				[new ConstantIntegerType(2), TypeCombinator::addNull($this->uintStringified())],
+				[new ConstantIntegerType(2), $this->uintStringified(true)],
 				[new ConstantIntegerType(3), $this->uintStringified()],
 			]),
 			'
@@ -1210,8 +1229,8 @@ public function getTestData(): iterable
 		yield 'date_diff function' => [
 			$this->constantArray([
 				[new ConstantIntegerType(1), $this->numericStringified()],
-				[new ConstantIntegerType(2), TypeCombinator::addNull($this->numericStringified())],
-				[new ConstantIntegerType(3), TypeCombinator::addNull($this->numericStringified())],
+				[new ConstantIntegerType(2), $this->numericStringified(true)],
+				[new ConstantIntegerType(3), $this->numericStringified(true)],
 				[new ConstantIntegerType(4), $this->numericStringified()],
 			]),
 			'
@@ -1253,11 +1272,9 @@ public function getTestData(): iterable
 				],
 				[
 					new ConstantIntegerType(2),
-					TypeCombinator::addNull(
-						$this->hasTypedExpressions()
-						? $this->uint()
-						: $this->uintStringified()
-					),
+					$this->hasTypedExpressions()
+					? $this->uint(true)
+					: $this->uintStringified(true),
 				],
 				[
 					new ConstantIntegerType(3),
@@ -1278,8 +1295,8 @@ public function getTestData(): iterable
 			yield 'locate function' => [
 				$this->constantArray([
 					[new ConstantIntegerType(1), $this->uintStringified()],
-					[new ConstantIntegerType(2), TypeCombinator::addNull($this->uintStringified())],
-					[new ConstantIntegerType(3), TypeCombinator::addNull($this->uintStringified())],
+					[new ConstantIntegerType(2), $this->uintStringified(true)],
+					[new ConstantIntegerType(3), $this->uintStringified(true)],
 					[new ConstantIntegerType(4), $this->uintStringified()],
 				]),
 				'
@@ -1321,8 +1338,8 @@ public function getTestData(): iterable
 		yield 'mod function' => [
 			$this->constantArray([
 				[new ConstantIntegerType(1), $this->uintStringified()],
-				[new ConstantIntegerType(2), TypeCombinator::addNull($this->uintStringified())],
-				[new ConstantIntegerType(3), TypeCombinator::addNull($this->uintStringified())],
+				[new ConstantIntegerType(2), $this->uintStringified(true)],
+				[new ConstantIntegerType(3), $this->uintStringified(true)],
 				[new ConstantIntegerType(4), $this->uintStringified()],
 			]),
 			'
@@ -1336,7 +1353,7 @@ public function getTestData(): iterable
 
 		yield 'mod function error' => [
 			$this->constantArray([
-				[new ConstantIntegerType(1), TypeCombinator::addNull($this->uintStringified())],
+				[new ConstantIntegerType(1), $this->uintStringified(true)],
 			]),
 			'
 				SELECT		MOD(10, NULLIF(m.intColumn, m.intColumn))
@@ -1395,15 +1412,15 @@ public function getTestData(): iterable
 
 		yield 'identity function' => [
 			$this->constantArray([
-				[new ConstantIntegerType(1), TypeCombinator::addNull($this->numericStringOrInt())],
-				[new ConstantIntegerType(2), $this->numericStringOrInt()],
-				[new ConstantIntegerType(3), TypeCombinator::addNull($this->numericStringOrInt())],
+				[new ConstantIntegerType(1), $this->intStringified(true)],
+				[new ConstantIntegerType(2), $this->intStringified()],
+				[new ConstantIntegerType(3), $this->intStringified(true)],
 				[new ConstantIntegerType(4), TypeCombinator::addNull(new StringType())],
 				[new ConstantIntegerType(5), TypeCombinator::addNull(new StringType())],
-				[new ConstantIntegerType(6), TypeCombinator::addNull($this->numericStringOrInt())],
+				[new ConstantIntegerType(6), $this->intStringified(true)],
 				[new ConstantIntegerType(7), TypeCombinator::addNull(new MixedType())],
-				[new ConstantIntegerType(8), TypeCombinator::addNull($this->numericStringOrInt())],
-				[new ConstantIntegerType(9), TypeCombinator::addNull($this->numericStringOrInt())],
+				[new ConstantIntegerType(8), $this->intStringified(true)],
+				[new ConstantIntegerType(9), $this->intStringified(true)],
 			]),
 			'
 				SELECT		IDENTITY(m.oneNull),
@@ -1422,7 +1439,7 @@ public function getTestData(): iterable
 
 		yield 'select nullable association' => [
 			$this->constantArray([
-				[new ConstantIntegerType(1), TypeCombinator::addNull($this->numericStringOrInt())],
+				[new ConstantIntegerType(1), $this->intStringified(true)],
 			]),
 			'
 				SELECT		DISTINCT(m.oneNull)
@@ -1432,7 +1449,7 @@ public function getTestData(): iterable
 
 		yield 'select non null association' => [
 			$this->constantArray([
-				[new ConstantIntegerType(1), $this->numericStringOrInt()],
+				[new ConstantIntegerType(1), $this->intStringified()],
 			]),
 			'
 				SELECT		DISTINCT(m.one)
@@ -1442,7 +1459,7 @@ public function getTestData(): iterable
 
 		yield 'select default nullability association' => [
 			$this->constantArray([
-				[new ConstantIntegerType(1), TypeCombinator::addNull($this->numericStringOrInt())],
+				[new ConstantIntegerType(1), $this->intStringified(true)],
 			]),
 			'
 				SELECT		DISTINCT(m.oneDefaultNullability)
@@ -1452,7 +1469,7 @@ public function getTestData(): iterable
 
 		yield 'select non null association in aggregated query' => [
 			$this->constantArray([
-				[new ConstantIntegerType(1), TypeCombinator::addNull($this->numericStringOrInt())],
+				[new ConstantIntegerType(1), $this->intStringified(true)],
 				[
 					new ConstantIntegerType(2),
 					$this->hasTypedExpressions()
@@ -1522,17 +1539,6 @@ private function constantArray(array $elements): Type
 		return $builder->getArray();
 	}
 
-	private function numericStringOrInt(): Type
-	{
-		return new UnionType([
-			new IntegerType(),
-			new IntersectionType([
-				new StringType(),
-				new AccessoryNumericStringType(),
-			]),
-		]);
-	}
-
 	private function numericString(): Type
 	{
 		return new IntersectionType([
@@ -1541,42 +1547,67 @@ private function numericString(): Type
 		]);
 	}
 
-	private function uint(): Type
+	private function uint(bool $nullable = false): Type
 	{
-		return IntegerRangeType::fromInterval(0, null);
+		$type = IntegerRangeType::fromInterval(0, null);
+		if ($nullable) {
+			TypeCombinator::addNull($type);
+		}
+
+		return $type;
 	}
 
-	private function intStringified(): Type
+	private function intStringified(bool $nullable = false): Type
 	{
-		return TypeCombinator::union(
+		$types = [
 			new IntegerType(),
-			$this->numericString()
-		);
+			$this->numericString(),
+		];
+		if ($nullable) {
+			$types[] = new NullType();
+		}
+
+		return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$types));
 	}
-	private function uintStringified(): Type
+	private function uintStringified(bool $nullable = false): Type
 	{
-		return TypeCombinator::union(
+		$types = [
 			$this->uint(),
-			$this->numericString()
-		);
+			$this->numericString(),
+		];
+		if ($nullable) {
+			$types[] = new NullType();
+		}
+
+		return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$types));
 	}
 
-	private function numericStringified(): Type
+	private function numericStringified(bool $nullable = false): Type
 	{
-		return TypeCombinator::union(
+		$types = [
 			new FloatType(),
 			new IntegerType(),
-			$this->numericString()
-		);
+			$this->numericString(),
+		];
+		if ($nullable) {
+			$types[] = new NullType();
+		}
+
+		return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$types));
 	}
 
-	private function unumericStringified(): Type
+	private function unumericStringified(bool $nullable = false): Type
 	{
-		return TypeCombinator::union(
+		$types = [
 			new FloatType(),
 			IntegerRangeType::fromInterval(0, null),
-			$this->numericString()
-		);
+			$this->numericString(),
+		];
+		if ($nullable) {
+			$types[] = new NullType();
+		}
+
+		return TypeUtils::toBenevolentUnion(TypeCombinator::union(...$types));
 	}
 
 	private function hasTypedExpressions(): bool
diff --git a/tests/Type/Doctrine/data/QueryResult/queryResult.php b/tests/Type/Doctrine/data/QueryResult/queryResult.php
index d8681e76..7062d41e 100644
--- a/tests/Type/Doctrine/data/QueryResult/queryResult.php
+++ b/tests/Type/Doctrine/data/QueryResult/queryResult.php
@@ -383,31 +383,31 @@ public function testReturnTypeOfQueryMethodsWithExplicitSingleScalarHydrationMod
 		');
 
 		assertType(
-			'int<0, max>|numeric-string',
+			'(int<0, max>|numeric-string)',
 			$query->getResult(AbstractQuery::HYDRATE_SINGLE_SCALAR)
 		);
 		assertType(
-			'int<0, max>|numeric-string',
+			'(int<0, max>|numeric-string)',
 			$query->getSingleScalarResult()
 		);
 		assertType(
-			'int<0, max>|numeric-string',
+			'(int<0, max>|numeric-string)',
 			$query->execute(null, AbstractQuery::HYDRATE_SINGLE_SCALAR)
 		);
 		assertType(
-			'int<0, max>|numeric-string',
+			'(int<0, max>|numeric-string)',
 			$query->executeIgnoreQueryCache(null, AbstractQuery::HYDRATE_SINGLE_SCALAR)
 		);
 		assertType(
-			'int<0, max>|numeric-string',
+			'(int<0, max>|numeric-string)',
 			$query->executeUsingQueryCache(null, AbstractQuery::HYDRATE_SINGLE_SCALAR)
 		);
 		assertType(
-			'int<0, max>|numeric-string',
+			'(int<0, max>|numeric-string)',
 			$query->getSingleResult(AbstractQuery::HYDRATE_SINGLE_SCALAR)
 		);
 		assertType(
-			'int<0, max>|numeric-string|null',
+			'(int<0, max>|numeric-string|null)',
 			$query->getOneOrNullResult(AbstractQuery::HYDRATE_SINGLE_SCALAR)
 		);
 	}