Union & order by

Question

hi
i have this SQL:
SELECT 1,A,date
FROM TEST
where A='X'
UNION
SELECT 2,A,date
FROM TEST
where A='Y'
I can not order by date!(i do this sql in report builder).
help me.
thanks

Answer 1

this is my query:
SELECT 1, U.CLINT_IP, U.CLIENT_USER_NAME, U.LOG_DATE,
U.LOG_TIME, U.PROCESSING_TIME,
(U.BYTE_SENT/1024) dis_bs,
(U.BYTE_RECIEVED/1024) dis_br, U.OBJECT_NAME
FROM USER_LOG_FILES U
where EXISTS (select 1 from compare_url C where upper(U.Object_Name) like upper('%'|| C.Url ||'%') )
and ( upper(U.CLIENT_USER_NAME) like '%'||upper(:user_id)||'%' or :user_id is null)
and LOG_DATE between :login_date1 and :login_date2
UNION
SELECT 2, U.CLINT_IP, U.CLIENT_USER_NAME, U.LOG_DATE,
U.LOG_TIME, U.PROCESSING_TIME,
(U.BYTE_SENT/1024) dis_bs,
(U.BYTE_RECIEVED/1024) dis_br, U.OBJECT_NAME
FROM USER_LOG_FILES U
where NOT EXISTS (select 1 from compare_url C where upper(U.Object_Name) like upper('%'|| C.Url ||'%') )
and ( upper(U.CLIENT_USER_NAME) like '%'||upper(:user_id)||'%' or :user_id is null)
and LOG_DATE between :login_date1 and :login_date2
order by 3
and this is my table :
SQL> desc user_log_files
Name Null? Type
CLINT_IP VARCHAR2(4000)
CLIENT_USER_NAME VARCHAR2(4000)
LOG_DATE DATE
LOG_TIME VARCHAR2(4000)
PROCESSING_TIME NUMBER(10)
BYTE_SENT NUMBER(10)
BYTE_RECIEVED NUMBER(10)
OBJECT_NAME VARCHAR2(4000)
thanks.