[Enhance](Nereids)when both Nereids and old parsers report errors, prompt error messages for the Nereids

fe/fe-core/src/main/java/org/apache/doris/qe/ConnectProcessor.java

@@ -182,7 +182,7 @@ protected void handleQuery(MysqlCommand mysqlCommand, String originStmt) {
                 .setSqlHash(ctx.getSqlHash());
 
         List<StatementBase> stmts = null;
-
+        Exception nereidsParseException = null;
         // Nereids do not support prepare and execute now, so forbid prepare command, only process query command
         if (mysqlCommand == MysqlCommand.COM_QUERY && ctx.getSessionVariable().isEnableNereidsPlanner()) {
             try {
@@ -195,6 +195,7 @@ protected void handleQuery(MysqlCommand mysqlCommand, String originStmt) {
                 // TODO: We should catch all exception here until we support all query syntax.
                 LOG.debug("Nereids parse sql failed. Reason: {}. Statement: \"{}\".",
                         e.getMessage(), convertedStmt);
+                nereidsParseException = e;
             }
         }
 
@@ -203,6 +204,12 @@ protected void handleQuery(MysqlCommand mysqlCommand, String originStmt) {
             try {
                 stmts = parse(convertedStmt);
             } catch (Throwable throwable) {
+                // if NereidsParser and oldParser both failed,
+                // prove is a new feature implemented only on the nereids,
+                // so an error message for the new nereids is thrown
+                if (nereidsParseException != null) {
+                    throwable = nereidsParseException;
+                }
                 // Parse sql failed, audit it and return
                 handleQueryException(throwable, convertedStmt, null, null);
                 return;

regression-test/suites/correctness_p0/test_current_timestamp.groovy

@@ -213,7 +213,7 @@ suite("test_current_timestamp") {
             DISTRIBUTED BY HASH(id)
             PROPERTIES("replication_num" = "1");
         """
-        exception "errCode = 2, detailMessage = Internal Error, maybe syntax error or this is a bug: column's default value current_timestamp precision must be between 0 and 6"
+        exception "between 0 and 6"
     }
 
     // user case

regression-test/suites/datatype_p0/bitmap/test_bitmap_int.groovy

@@ -68,7 +68,7 @@ suite("test_bitmap_int") {
 
     test {
         sql """SELECT case id_bitmap when 1 then 1 else 0 FROM test_bitmap;"""
-        exception "errCode"
+        exception "ParseException"
     }
 
     qt_sql64_4 """SELECT id_bitmap  FROM test_bitmap  WHERE id_bitmap is null LIMIT 20;"""

regression-test/suites/datatype_p0/nested_types/query/test_nestedtypes_insert_into_select.groovy

@@ -53,6 +53,6 @@ suite("test_nestedtypes_insert_into_select", "p0") {
 
     test {
         sql "insert into ast values ('text' , [named_struct('a',1,'b','home'),named_struct('a',2,'b','work')]);"
-        exception "errCode = 2, detailMessage = Sql parser can't convert the result to array, please check your sql."
+        exception "ParseException"
     }
 }

regression-test/suites/demo_p0/test_action.groovy

@@ -19,7 +19,7 @@ suite("test_action") {
     test {
         sql "abcdefg"
         // check exception message contains
-        exception "errCode = 2, detailMessage = Syntax error"
+        exception "ParseException"
     }
 
     test {

regression-test/suites/nereids_p0/insert_into_table/update_on_current_timestamp.groovy

@@ -190,6 +190,6 @@ suite("nereids_update_on_current_timestamp") {
                 k int,
                 `update_time` datetime(6) default current_timestamp(4) on update current_timestamp(3)) replace,
             ) AGGREGATE KEY(k) DISTRIBUTED BY HASH(k) BUCKETS 1 properties("replication_num" = "1");"""
-        exception "Syntax error"
+        exception "ParseException"
     }
 }

regression-test/suites/query_p0/join/test_join2.groovy

@@ -84,7 +84,7 @@ suite("test_join2", "query,p0,arrow_flight_sql") {
             FROM ${TBname1} NATURAL JOIN ${TBname2}
             ORDER BY 1,2,3,4,5,6;
         """
-        exception "errCode = 2, detailMessage = natural join is not supported, please use inner join instead."
+        exception "ParseException"
     }
 
     qt_join4 """