fixed Statement.update returning -1 when schema altering statement

ClickHouse · Jan 30, 2025 · f1a1476 · f1a1476
1 parent d79d470
commit f1a1476
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/jdbc-v2/src/main/java/com/clickhouse/jdbc/StatementImpl.java b/jdbc-v2/src/main/java/com/clickhouse/jdbc/StatementImpl.java
@@ -230,7 +230,7 @@ public int executeUpdate(String sql, QuerySettings settings) throws SQLException
         try (QueryResponse response = queryTimeout == 0 ? connection.client.query(lastSql, mergedSettings).get()
                 : connection.client.query(lastSql, mergedSettings).get(queryTimeout, TimeUnit.SECONDS)) {
             currentResultSet = null;
-            updateCount = (int) response.getWrittenRows();
+            updateCount = Math.max(0, (int) response.getWrittenRows()); // when statement alters schema no result rows returned.
             metrics = response.getMetrics();
             lastQueryId = response.getQueryId();
         } catch (Exception e) {