fix return value

encrypt.go

@@ -59,17 +59,22 @@ func (s *Stmt) encryptArgs(ctx context.Context, args []namedValue) (encryptedArg
 		query:          "sp_describe_parameter_encryption",
 		skipEncryption: true,
 	}
+	oldouts := s.c.outs
+	s.c.clearOuts()
+
 	newArgs, err := s.prepareEncryptionQuery(isProc(s.query), s.query, args)
 	if err != nil {
 		return
 	}
 	// TODO: Consider not using recursion
 	rows, err := q.queryContext(ctx, newArgs)
 	if err != nil {
+		s.c.outs = oldouts
 		return
 	}
 	cekInfo, paramsInfo, err := processDescribeParameterEncryption(rows)
 	rows.Close()
+	s.c.outs = oldouts
 	if err != nil {
 		return
 	}
@@ -95,7 +100,7 @@ func (s *Stmt) encryptArgs(ctx context.Context, args []namedValue) (encryptedArg
 		}
 		info := paramMap[name]
 
-		if info.p.encType == ColumnEncryptionPlainText {
+		if info.p.encType == ColumnEncryptionPlainText || a.Value == nil {
 			continue
 		}
 

token.go

@@ -919,7 +919,7 @@ func parseReturnValue(r *tdsBuffer, s *tdsSession) (nv namedValue) {
 	ti := getBaseTypeInfo(r, true) // UserType + Flags + TypeInfo
 
 	var cryptoMetadata *cryptoMetadata = nil
-	if s.alwaysEncrypted {
+	if s.alwaysEncrypted && (ti.Flags&fEncrypted) == fEncrypted {
 		cm := parseCryptoMetadata(r, nil) // CryptoMetadata
 		cryptoMetadata = &cm
 	}