Description

pansong291

opened on Apr 9, 2024

Issue body actions

Always check against the Latest SNAPSHOT of JSQLParser and the Syntax Diagram

Failing SQL Feature:

• Brief description of the failing SQL feature

  net.sf.jsqlparser.parser.ParseException: Encountered unexpected token: "\n\n\n" <ST_SEMICOLON>
    at line 1, column 39.
  

SQL Example:

• Simplified Query Example, focusing on the failing feature

  UPDATE shop_info  SET title=?,
  
  
  
  
  props=?  WHERE id=?

• This SQL statement is dynamically concatenated in the program using a third-party library, so it is not possible to remove the extra blank lines within it. Even with the extra blank lines, it can be executed normally in MySQL, which means it does not have syntax errors.

Software Information:

• JSqlParser version 4.6
• Database MySQL

Tips:

Please write in English and avoid Screenshots (as we can't copy and paste content from it).
Try your example online with the latest JSQLParser and share the link in the error report.
Do provide Links or References to the specific Grammar and Syntax you are trying to use.

http://jsqlformatter.manticore-projects.com/jsqlformatter/demo.html?args=-c%20KoBQIgggKgogBAZwBYHsAOB9AlgOwGYpxwDKMUcALlhQDYCmAvAPwA0AUBx2gE7oLNEA6gAkYAJXhYAJsyA

Activity

1. manticore-projects

   pinned this issue on Apr 9, 2024
2. manticore-projects commented on Apr 9, 2024

   

   manticore-projects

   on Apr 9, 2024

   Contributor

   More actions

   Greetings!

   Two empty lines \n\n\n terminate a statement. There is no good reason for a statement to contain more than 1 empty line, but there are many good reasons to split statements at empty lines when you don't want to write semicolons.

   If you still insist on empty lines then just use something like String.replaceAll("\n\n+", "\n").
3. manticore-projects

   closed this as not plannedon Apr 9, 2024
4. pansong291 commented on Apr 10, 2024

   

   pansong291

   on Apr 10, 2024

   Author

   More actions

   @manticore-projects Hello, I don't think it's that simple. Consider the following SQL statement, it cannot simply replace empty lines:

   update shop_info set title=?,
   
   
   
   content='abc
   
   
   
   def'
   where id=?
5. manticore-projects commented on Apr 18, 2024

   

   manticore-projects

   on Apr 18, 2024

   Contributor

   More actions

   With JSQLParser 4.10 Snapshot, you can use the method CCJSqlParserUtil.sanitizeSingleSql( sqlStr) to sanitize your statement. It will remove the redundant empty lines using a regular expression which honors StringLiteral.

       @Test
       void testSingleStatementWithEmptyLines() throws JSQLParserException {
           String sqlStr = "update shop_info set title=?,\n"
                           + "\n"
                           + "\n"
                           + "\n"
                           + "content='abc\n"
                           + "\n"
                           + "\n"
                           + "\n"
                           + "def'\n"
                           + "where id=?";
   
           Statement statement = CCJSqlParserUtil.parse( CCJSqlParserUtil.sanitizeSingleSql( sqlStr) );
           TestUtils.assertStatementCanBeDeparsedAs(statement, "update shop_info set title=?,\n"
                                                               + "content='abc\n"
                                                               + "\n"
                                                               + "\n"
                                                               + "\n"
                                                               + "def'\n"
                                                               + "where id=?", true);
       }
6. manticore-projects

   changed the title [-][BUG] JSQLParser Version : 4.6 : Encountered unexpected token: "\n\n\n" <ST_SEMICOLON> at line 1, column 39.[/-] [+]Encountered unexpected token: "\n\n\n" <ST_SEMICOLON>[/+] on May 1, 2024
7. manticore-projects

   marked [BUG] JSQLParser 5.0: RDBMS : SQL was automatically intercepted #2193 as a duplicate of this issue on Mar 19, 2025
8. manticore-projects

   marked [BUG] JSQLParser Version 5.0 : MYSQL: CCJSqlParserUtil.parse() silently drops WHERE conditions when SQL contains excessive blank lines or mixed whitespace #2346 as a duplicate of this issue on Nov 20, 2025

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