anchor.diff:  subquery
       : LP_ unionClause RP_
       ;
  -    
  +
   withClause_
       : WITH cteClause_ (COMMA_ cteClause_)*
       ;
  
positive.code: cteClause_
      : identifier columnNames? AS subquery
      ;
      
  
negative.code:     ;
      
  insertDefaultValue
      : columnNames? outputClause_? DEFAULT VALUES
      ;
  
  insertValuesClause
      : columnNames? outputClause_? VALUES assignmentValues (COMMA_ assignmentValues)*
      ;
  
  insertSelectClause
      : columnNames? outputClause_? select
      ;
  
  update
  