Fixed insert statements

Author: chernser

jdbc-v2/src/main/antlr4/com/clickhouse/jdbc/internal/parser/ClickHouseParser.g4

@@ -439,7 +439,7 @@ assignmentValue
     : literal   # InsertRawValue
     | QUERY     # InsertParameter
     | identifier (LPAREN columnExprList? RPAREN)? # InsertParameterFuncExpr
-    | LPAREN columnExpr RPAREN # InserParameterExpr
+    | LPAREN? columnExpr RPAREN? # InserParameterExpr
     ;
 
 // KILL statement

jdbc-v2/src/test/java/com/clickhouse/jdbc/internal/SqlParserTest.java

@@ -333,8 +333,8 @@ public Object[][] testMiscStmtDp() {
             {"WITH toDate('2025-08-20') as DATE_END, events AS ( SELECT 1 ) SELECT * FROM events", 0},
             {"select 1 table where 1 = ?", 1},
             {"insert into t (i, t) values (1, timestamp '2010-01-01 00:00:00')", 0},
-            {"insert into t (i, t) values (1, date '2010-01-01')", 0
-            }
+            {"insert into t (i, t) values (1, date '2010-01-01')", 0},
+            {"SELECT timestamp '2010-01-01 00:00:00' as ts, date '2010-01-01' as d", 0},
         };
     }
 
@@ -422,7 +422,6 @@ public Object[][] testMiscStmtDp() {
             "    EventDate = toDate(?) AND\n" +
             "    EventTime <= ts_upper_bound;";
 
-
     @Test(dataProvider = "testStatementWithoutResultSetDP")
     public void testStatementsForResultSet(String sql, int args, boolean hasResultSet) {
         SqlParser parser = new SqlParser();