[KYUUBI #7109] Ignore the ? in backticks

Author: ruanwenjun

kyuubi-hive-jdbc/src/main/java/org/apache/kyuubi/jdbc/hive/Utils.java

@@ -124,6 +124,7 @@ static List<String> splitSqlStatement(String sql) {
     boolean inSingleQuote = false;
     boolean inDoubleQuote = false;
     boolean inComment = false;
+    boolean inBackticks = false;
     int off = 0;
     boolean skip = false;
 
@@ -148,8 +149,13 @@ static List<String> splitSqlStatement(String sql) {
             inDoubleQuote = !inDoubleQuote;
           }
           break;
-        case '-':
+        case '`':
           if (!inSingleQuote && !inDoubleQuote) {
+            inBackticks = !inBackticks;
+          }
+          break;
+        case '-':
+          if (!inSingleQuote && !inDoubleQuote && !inBackticks) {
             if (i < sql.length() - 1 && sql.charAt(i + 1) == '-') {
               inComment = true;
             }
@@ -161,7 +167,7 @@ static List<String> splitSqlStatement(String sql) {
           }
           break;
         case '?':
-          if (!inSingleQuote && !inDoubleQuote) {
+          if (!inSingleQuote && !inDoubleQuote && !inIdentifierQuoted) {
             parts.add(sql.substring(off, i));
             off = i + 1;
           }

kyuubi-hive-jdbc/src/test/java/org/apache/kyuubi/jdbc/hive/UtilsTest.java

@@ -197,5 +197,17 @@ public void testSplitSqlStatement() {
     assertEquals("--comments\n" + "select --? \n", splitSql.get(0));
     assertEquals(" from ", splitSql.get(1));
     assertEquals("", splitSql.get(2));
+
+    String inIdentifierQuoted =
+        "SELECT "
+            + "regexp_replace(col2, '\\n|\\r|\\t', '') as col2, "
+            + "`(col2|col2)?+.+` "
+            + "FROM ?";
+    splitSql = Utils.splitSqlStatement(inIdentifierQuoted);
+    assertEquals(2, splitSql.size());
+    assertEquals(
+        "SELECT regexp_replace(col2, '\\n|\\r|\\t', '') as col2, `(col2|col2)?+.+` FROM ",
+        splitSql.get(0));
+    assertEquals("", splitSql.get(1));
   }
 }