SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Function countIf (children 1)
     ExpressionList (children 1)
      Function or (children 1)
       ExpressionList (children 2)
        Function like (children 1)
         ExpressionList (children 2)
          Identifier explain
          Literal \'%COMMA%\'
        Function like (children 1)
         ExpressionList (children 2)
          Identifier explain
          Literal \'%CROSS%\'
    Function countIf (children 1)
     ExpressionList (children 1)
      Function like (children 1)
       ExpressionList (children 2)
        Identifier explain
        Literal \'%INNER%\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Asterisk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function viewExplain (children 1)
              ExpressionList (children 3)
               Literal \'EXPLAIN QUERY TREE\'
               Literal \'\'
               Subquery (children 1)
                SelectWithUnionQuery (children 1)
                 ExpressionList (children 1)
                  SelectQuery (children 2)
                   ExpressionList (children 1)
                    Identifier t1.a
                   TablesInSelectQuery (children 4)
                    TablesInSelectQueryElement (children 1)
                     TableExpression (children 1)
                      TableIdentifier t1
                    TablesInSelectQueryElement (children 2)
                     TableExpression (children 1)
                      TableIdentifier t2
                     TableJoin
                    TablesInSelectQueryElement (children 2)
                     TableExpression (children 1)
                      TableIdentifier t3
                     TableJoin
                    TablesInSelectQueryElement (children 2)
                     TableExpression (children 1)
                      TableIdentifier t4
                     TableJoin
   Set
