Oracle SQL syntax parsing failed

[TianWanMing]

Bug Report

For English only, other languages will not accept.

Before report a bug, make sure you have:

• Searched open and closed GitHub issues.
• Read documentation: ShardingSphere Doc.

Please pay attention on issues you submitted, because we maybe need more details.
If no response anymore and we cannot reproduce it on current information, we will close it.

Please answer these questions before submitting your issue. Thanks!

Which version of ShardingSphere did you use?

5.5.1

Which project did you use? ShardingSphere-JDBC or ShardingSphere-Proxy?

ShardingSphere-JDBC

Expected behavior

Actual behavior

Reason analyze (If you can)

Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc.

Parsing the sql

Example codes for reproduce this issue (such as a github link).

String sql = "SELECT B.* FROM (SELECT A.* FROM (SELECT * FROM ACT_DEPLOY_FORM WHERE FORM_KEY= 1) AS A) AS B";
CacheOption cacheOption = new CacheOption(128, 1024L);
SQLParserEngine parserEngine = new SQLParserEngine("Oracle", cacheOption);
ParseASTNode parseASTNode = parserEngine.parse(sql, true);
SQLStatementVisitorEngine sqlVisitorEngine = new SQLStatementVisitorEngine("Oracle");
SQLStatement sqlStatement = sqlVisitorEngine.visit(parseASTNode);