Explain EXPLAIN SYNTAX (children 1)
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    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 or (children 1)
       ExpressionList (children 2)
        Function equals (children 1)
         ExpressionList (children 2)
          Function toYear (children 1)
           ExpressionList (children 1)
            Identifier date1
          Literal UInt64_1993
        Function equals (children 1)
         ExpressionList (children 2)
          Function toYear (children 1)
           ExpressionList (children 1)
            Identifier date1
          Literal UInt64_1994
      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
