SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Asterisk
   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\'
               Literal \'actions = 1, sorting = 1\'
               Subquery (children 1)
                SelectWithUnionQuery (children 1)
                 ExpressionList (children 1)
                  SelectQuery (children 5)
                   ExpressionList (children 4)
                    Identifier a
                    Function any (children 1)
                     ExpressionList (children 1)
                      Identifier b
                    Identifier c
                    Identifier d
                   TablesInSelectQuery (children 1)
                    TablesInSelectQueryElement (children 1)
                     TableExpression (children 1)
                      TableIdentifier tab
                   Function equals (children 1)
                    ExpressionList (children 2)
                     Identifier b
                     Literal UInt64_1
                   ExpressionList (children 3)
                    Identifier a
                    Identifier c
                    Identifier d
                   Set
   Function or (children 1)
    ExpressionList (children 3)
     Function like (children 1)
      ExpressionList (children 2)
       Identifier explain
       Literal \'%ReadFromMergeTree%\'
     Function like (children 1)
      ExpressionList (children 2)
       Identifier explain
       Literal \'%Aggregating%\'
     Function like (children 1)
      ExpressionList (children 2)
       Identifier explain
       Literal \'%Order:%\'
   Set
