Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    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 4)
            Identifier date
            Identifier id
            Identifier name
            Identifier value
           TablesInSelectQuery (children 1)
            TablesInSelectQueryElement (children 1)
             TableExpression (children 1)
              Subquery (children 1)
               SelectWithUnionQuery (children 1)
                ExpressionList (children 1)
                 SelectQuery (children 2)
                  ExpressionList (children 4)
                   Identifier date
                   Identifier id
                   Identifier name
                   Identifier value
                  TablesInSelectQuery (children 1)
                   TablesInSelectQueryElement (children 1)
                    TableExpression (children 1)
                     TableIdentifier test_00597
    Function equals (children 1)
     ExpressionList (children 2)
      Identifier id
      Literal UInt64_1
