Explain EXPLAIN QUERY TREE (children 2)
 Set
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 4)
    ExpressionList (children 1)
     Asterisk
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier date_t__fuzz_0
    Function and (children 1)
     ExpressionList (children 2)
      Function notEquals (children 1)
       ExpressionList (children 2)
        Function toYear (alias b) (children 1)
         ExpressionList (children 1)
          Identifier date1
        Literal UInt64_1993
      Function lessOrEquals (children 1)
       ExpressionList (children 2)
        Identifier id
        Identifier b
    Set
