Fix issue of failed to create PreparedStatement for insert query with multiple values expression

clickhouse-jdbc/src/main/java/com/clickhouse/jdbc/internal/ClickHouseConnectionImpl.java

@@ -615,14 +615,17 @@ public PreparedStatement prepareStatement(String sql, int resultSetType, int res
                     !parsedStmt.containsKeyword("SELECT") && parsedStmt.hasValues() &&
                     (!parsedStmt.hasFormat() || clientRequest.getFormat().name().equals(parsedStmt.getFormat()))) {
                 String query = parsedStmt.getSQL();
-                int startIndex = parsedStmt.getPositions().get(ClickHouseSqlStatement.KEYWORD_VALUES_START);
-                int endIndex = parsedStmt.getPositions().get(ClickHouseSqlStatement.KEYWORD_VALUES_END);
-                boolean useStream = true;
-                for (int i = startIndex + 1; i < endIndex; i++) {
-                    char ch = query.charAt(i);
-                    if (ch != '?' && ch != ',' && !Character.isWhitespace(ch)) {
-                        useStream = false;
-                        break;
+                boolean useStream = false;
+                Integer startIndex = parsedStmt.getPositions().get(ClickHouseSqlStatement.KEYWORD_VALUES_START);
+                if (startIndex != null) {
+                    useStream = true;
+                    int endIndex = parsedStmt.getPositions().get(ClickHouseSqlStatement.KEYWORD_VALUES_END);
+                    for (int i = startIndex + 1; i < endIndex; i++) {
+                        char ch = query.charAt(i);
+                        if (ch != '?' && ch != ',' && !Character.isWhitespace(ch)) {
+                            useStream = false;
+                            break;
+                        }
                     }
                 }
 

clickhouse-jdbc/src/test/java/com/clickhouse/jdbc/ClickHousePreparedStatementTest.java

@@ -1,8 +1,10 @@
 package com.clickhouse.jdbc;
 
 import java.io.ByteArrayInputStream;
+import java.math.BigDecimal;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
+import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.sql.BatchUpdateException;
 import java.sql.Connection;
@@ -1257,4 +1259,46 @@ public void testInsertWithAndSelect() throws Exception {
             Assert.assertFalse(rs.next());
         }
     }
+
+    @Test(groups = "integration")
+    public void testInsertWithMultipleValues() throws Exception {
+        try (ClickHouseConnection conn = newConnection(new Properties());
+                Statement s = conn.createStatement()) {
+            s.execute("drop table if exists test_insert_with_multiple_values; "
+                    + "CREATE TABLE test_insert_with_multiple_values(a Int32, b Nullable(String)) ENGINE=Memory");
+            try (PreparedStatement ps = conn.prepareStatement(
+                    "INSERT INTO test_insert_with_multiple_values values(?, ?), (2 , ? ), ( ? , '') , (?,?) ,( ? ,? )")) {
+                ps.setInt(1, 1);
+                ps.setNull(2, Types.VARCHAR);
+                ps.setObject(3, "er");
+                ps.setInt(4, 3);
+                ps.setInt(5, 4);
+                ps.setURL(6, new URL("http://some.host"));
+                ps.setInt(7, 5);
+                ps.setString(8, null);
+                ps.executeUpdate();
+            }
+
+            try (ResultSet rs = s.executeQuery("select * from test_insert_with_multiple_values order by a")) {
+                Assert.assertTrue(rs.next());
+                Assert.assertEquals(rs.getByte(1), (byte) 1);
+                Assert.assertEquals(rs.getObject(2), null);
+                Assert.assertTrue(rs.wasNull());
+                Assert.assertTrue(rs.next());
+                Assert.assertEquals(rs.getBigDecimal(1), BigDecimal.valueOf(2L));
+                Assert.assertEquals(rs.getString(2), "er");
+                Assert.assertTrue(rs.next());
+                Assert.assertEquals(rs.getString(1), "3");
+                Assert.assertEquals(rs.getObject(2), "");
+                Assert.assertTrue(rs.next());
+                Assert.assertEquals(rs.getShort(1), (short) 4);
+                Assert.assertEquals(rs.getURL(2), new URL("http://some.host"));
+                Assert.assertTrue(rs.next());
+                Assert.assertEquals(rs.getObject(1), Integer.valueOf(5));
+                Assert.assertEquals(rs.getString(2), null);
+                Assert.assertTrue(rs.wasNull());
+                Assert.assertFalse(rs.next());
+            }
+        }
+    }
 }