diff --git a/src/Condition/Condition.php b/src/Condition/Condition.php
index 128eb2c..04aaceb 100644
--- a/src/Condition/Condition.php
+++ b/src/Condition/Condition.php
@@ -38,6 +38,14 @@ public function getCondition(
 				$brackets = true;
 				continue;
 			}
+			elseif(is_string($part)) {
+				if($part[0] === "?") {
+					$part = substr($part, 1) . " = ?";
+				}
+				elseif($part[0] === ":") {
+					$part = substr($part, 1) . " = $part";
+				}
+			}
 
 			if($i > 0) {
 				if($subLogic) {
@@ -58,4 +66,20 @@ public function getCondition(
 
 		return $condition;
 	}
-}
\ No newline at end of file
+
+	public function getShortParameterSyntax():?string {
+		foreach($this->parts as $i => $part) {
+			if(!is_string($part)) {
+				continue;
+			}
+
+			$char1 = $part[0];
+			if($char1 === "?"
+			|| $char1 === ":") {
+				return $char1;
+			}
+		}
+
+		return null;
+	}
+}
diff --git a/src/Condition/MixedIndexedAndNamedParametersException.php b/src/Condition/MixedIndexedAndNamedParametersException.php
new file mode 100644
index 0000000..f15fcf3
--- /dev/null
+++ b/src/Condition/MixedIndexedAndNamedParametersException.php
@@ -0,0 +1,8 @@
+<?php
+namespace Gt\SqlBuilder\Condition;
+
+use Gt\SqlBuilder\SqlBuilderException;
+
+class MixedIndexedAndNamedParametersException extends SqlBuilderException {
+
+}
diff --git a/src/Query/SqlQuery.php b/src/Query/SqlQuery.php
index 206dd07..80d3715 100644
--- a/src/Query/SqlQuery.php
+++ b/src/Query/SqlQuery.php
@@ -3,6 +3,7 @@
 
 use Gt\SqlBuilder\Condition\AndCondition;
 use Gt\SqlBuilder\Condition\Condition;
+use Gt\SqlBuilder\Condition\MixedIndexedAndNamedParametersException;
 
 abstract class SqlQuery {
 	const PRE_QUERY_COMMENT = "/* preQuery */";
@@ -134,6 +135,7 @@ protected function processWhereClause(
 		$query = $name;
 		$query .= "\n\t";
 
+		$shortParameterSyntax = null;
 		$conditionalQuery = "";
 		foreach($parts as $i => $part) {
 			if(is_string($part)) {
@@ -141,6 +143,16 @@ protected function processWhereClause(
 			}
 
 			/** @var Condition $part */
+			if($partShortParameterSyntax = $part->getShortParameterSyntax()) {
+				if($shortParameterSyntax) {
+					if($shortParameterSyntax !== $partShortParameterSyntax) {
+						throw new MixedIndexedAndNamedParametersException();
+					}
+				}
+				else {
+					$shortParameterSyntax = $partShortParameterSyntax;
+				}
+			}
 
 			if(strlen($conditionalQuery) > 0) {
 				$conditionalQuery .= "\n";
diff --git a/src/SqlBuilderException.php b/src/SqlBuilderException.php
new file mode 100644
index 0000000..42fc841
--- /dev/null
+++ b/src/SqlBuilderException.php
@@ -0,0 +1,8 @@
+<?php
+namespace Gt\SqlBuilder;
+
+use RuntimeException;
+
+class SqlBuilderException extends RuntimeException {
+
+}
diff --git a/test/phpunit/Helper/Query/SelectExampleExtendWhereIndexedNamedMixedParameters.php b/test/phpunit/Helper/Query/SelectExampleExtendWhereIndexedNamedMixedParameters.php
new file mode 100644
index 0000000..64916ad
--- /dev/null
+++ b/test/phpunit/Helper/Query/SelectExampleExtendWhereIndexedNamedMixedParameters.php
@@ -0,0 +1,12 @@
+<?php
+namespace Gt\SqlBuilder\Test\Helper\Query;
+
+class SelectExampleExtendWhereIndexedNamedMixedParameters extends SelectExample {
+	public function where():array {
+		return array_merge(parent::where(), [
+			"test = 123",
+			":id",
+			"?name",
+		]);
+	}
+}
diff --git a/test/phpunit/Helper/Query/SelectExampleExtendWhereIndexedParameters.php b/test/phpunit/Helper/Query/SelectExampleExtendWhereIndexedParameters.php
new file mode 100644
index 0000000..c1d62e5
--- /dev/null
+++ b/test/phpunit/Helper/Query/SelectExampleExtendWhereIndexedParameters.php
@@ -0,0 +1,12 @@
+<?php
+namespace Gt\SqlBuilder\Test\Helper\Query;
+
+class SelectExampleExtendWhereIndexedParameters extends SelectExample {
+	public function where():array {
+		return array_merge(parent::where(), [
+			"test = 123",
+			"?id",
+			"?name",
+		]);
+	}
+}
diff --git a/test/phpunit/Helper/Query/SelectExampleExtendWhereNamedParameters.php b/test/phpunit/Helper/Query/SelectExampleExtendWhereNamedParameters.php
new file mode 100644
index 0000000..e048a8b
--- /dev/null
+++ b/test/phpunit/Helper/Query/SelectExampleExtendWhereNamedParameters.php
@@ -0,0 +1,12 @@
+<?php
+namespace Gt\SqlBuilder\Test\Helper\Query;
+
+class SelectExampleExtendWhereNamedParameters extends SelectExample {
+	public function where():array {
+		return array_merge(parent::where(), [
+			"test = 123",
+			":id",
+			":name",
+		]);
+	}
+}
diff --git a/test/phpunit/Query/SqlQueryTest.php b/test/phpunit/Query/SqlQueryTest.php
index b0cef1e..d1b6393 100644
--- a/test/phpunit/Query/SqlQueryTest.php
+++ b/test/phpunit/Query/SqlQueryTest.php
@@ -1,7 +1,11 @@
 <?php
 namespace Gt\SqlBuilder\Test\Query;
 
+use Gt\SqlBuilder\Condition\MixedIndexedAndNamedParametersException;
 use Gt\SqlBuilder\Query\SqlQuery;
+use Gt\SqlBuilder\Test\Helper\Query\SelectExampleExtendWhereIndexedNamedMixedParameters;
+use Gt\SqlBuilder\Test\Helper\Query\SelectExampleExtendWhereIndexedParameters;
+use Gt\SqlBuilder\Test\Helper\Query\SelectExampleExtendWhereNamedParameters;
 use Gt\SqlBuilder\Test\QueryTestCase;
 use PHPUnit\Framework\MockObject\MockObject;
 
@@ -12,4 +16,22 @@ public function testDefaults() {
 		self::assertEquals("", $sut->preQuery());
 		self::assertEquals("", $sut->postQuery());
 	}
-}
\ No newline at end of file
+
+	public function testIndexedParameterSyntax() {
+		$sut = new SelectExampleExtendWhereIndexedParameters();
+		$sql = self::normalise($sut);
+		self::assertEquals("select id, name, dateOfBirth from student where deletedAt is null and test = 123 and id = ? and name = ?", $sql);
+	}
+
+	public function testNamedParameterSyntax() {
+		$sut = new SelectExampleExtendWhereNamedParameters();
+		$sql = self::normalise($sut);
+		self::assertEquals("select id, name, dateOfBirth from student where deletedAt is null and test = 123 and id = :id and name = :name", $sql);
+	}
+
+	public function testIndexedNamedParameterMixedSyntax() {
+		$sut = new SelectExampleExtendWhereIndexedNamedMixedParameters();
+		self::expectException(MixedIndexedAndNamedParametersException::class);
+		$sut->__toString();
+	}
+}