Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function uniqTheta (children 1)
      ExpressionList (children 1)
       Function negate (children 1)
        ExpressionList (children 1)
         Function bitNot (children 1)
          ExpressionList (children 1)
           Function negate (children 1)
            ExpressionList (children 1)
             Identifier x
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Subquery (children 1)
        SelectWithUnionQuery (children 1)
         ExpressionList (children 1)
          SelectQuery (children 2)
           ExpressionList (children 1)
            Function modulo (alias x) (children 1)
             ExpressionList (children 2)
              Identifier number
              Literal UInt64_2
           TablesInSelectQuery (children 1)
            TablesInSelectQueryElement (children 1)
             TableExpression (children 1)
              Function numbers (children 1)
               ExpressionList (children 1)
                Literal UInt64_10