Add missing @throws annotations at the wrapper level

src/Connection.php

@@ -1010,6 +1010,9 @@ class Connection implements DriverConnection
         return new Result($result, $this);
     }
 
+    /**
+     * @throws DBALException
+     */
     public function query(string $sql): DriverResult
     {
         $connection = $this->getWrappedConnection();
@@ -1078,6 +1081,9 @@ class Connection implements DriverConnection
         }
     }
 
+    /**
+     * @throws DBALException
+     */
     public function exec(string $statement): int
     {
         $connection = $this->getWrappedConnection();

src/Connections/PrimaryReadReplicaConnection.php

@@ -220,6 +220,8 @@ class PrimaryReadReplicaConnection extends Connection
      * @param string $connectionName
      *
      * @return DriverConnection
+     *
+     * @throws DBALException
      */
     protected function connectTo($connectionName)
     {

src/Result.php

@@ -53,6 +53,8 @@ final class Result implements ResultInterface
 
     /**
      * {@inheritDoc}
+     *
+     * @throws DBALException
      */
     public function fetchOne()
     {

src/Statement.php

@@ -65,6 +65,8 @@ class Statement implements DriverStatement
      *
      * @param string     $sql  The SQL of the statement.
      * @param Connection $conn The connection on which the statement should be executed.
+     *
+     * @throws DBALException
      */
     public function __construct($sql, Connection $conn)
     {