diff --git a/src/Dibi/Helpers.php b/src/Dibi/Helpers.php
index 20cac485..0918b974 100644
--- a/src/Dibi/Helpers.php
+++ b/src/Dibi/Helpers.php
@@ -189,6 +189,7 @@ class Helpers
 			'TIME' => Type::DATETIME, // DATETIME, TIMESTAMP
 			'DATE' => Type::DATE,
 			'BOOL' => Type::BOOL,
+			'JSON' => Type::JSON,
 		];
 
 		foreach ($patterns as $s => $val) {
diff --git a/src/Dibi/Result.php b/src/Dibi/Result.php
index 6f54543d..981e3a8f 100644
--- a/src/Dibi/Result.php
+++ b/src/Dibi/Result.php
@@ -495,6 +495,9 @@ class Result implements IDataSource
 
 			} elseif ($type === Type::BINARY) {
 				$row[$key] = $this->getResultDriver()->unescapeBinary($value);
+
+			} elseif ($type === Type::JSON) {
+				$row[$key] = json_decode($value);
 			}
 		}
 	}
diff --git a/src/Dibi/Type.php b/src/Dibi/Type.php
index 0d4240ad..26227eab 100644
--- a/src/Dibi/Type.php
+++ b/src/Dibi/Type.php
@@ -18,6 +18,7 @@ class Type
 	public const
 		TEXT = 's', // as 'string'
 		BINARY = 'bin',
+		JSON = 'json',
 		BOOL = 'b',
 		INTEGER = 'i',
 		FLOAT = 'f',