Explain EXPLAIN QUERY TREE (children 2)
 Set
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 5)
    ExpressionList (children 1)
     Identifier value1
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier date_t
    Function and (children 1)
     ExpressionList (children 2)
      Function greaterOrEquals (children 1)
       ExpressionList (children 2)
        Identifier id
        Literal UInt64_1
      Function lessOrEquals (children 1)
       ExpressionList (children 2)
        Identifier id
        Literal UInt64_3
    Function equals (children 1)
     ExpressionList (children 2)
      Function toYear (children 1)
       ExpressionList (children 1)
        Identifier date1
      Literal UInt64_1993
    Set
