Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 1)
     Asterisk
    TablesInSelectQuery (children 3)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers (alias a)
     TablesInSelectQueryElement (children 2)
      TableExpression (children 1)
       TableIdentifier system.numbers (alias b)
      TableJoin
     TablesInSelectQueryElement (children 2)
      TableExpression (children 1)
       TableIdentifier system.numbers (alias c)
      TableJoin
    Function or (children 1)
     ExpressionList (children 5)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier a.number
        Literal UInt64_1
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier a.number
        Literal UInt64_2
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier a.number
        Literal UInt64_3
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier a.number
        Literal UInt64_4
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier a.number
        Literal UInt64_5
