I have two SQL statements:
Statement #1
SELECT CARRIER_REFEREN CE_NUMBER,
CURRENT_FLEET_S IZE,
trunc(Fleet_Siz e_Effective_Fro m_Date),
trunc(Fleet_Siz e_Effective_To_ Date)
FROM CAPS.CARRIER_FL EET_SIZE_HISTOR Y
WHERE CARRIER_REFEREN CE_NUMBER = 481
AND trunc(Fleet_Siz e_Effective_TO_ Date) >=
TO_DATE('24-FEB-2003') AND trunc(Fleet_Siz e_Effective_Fro m_Date) <=
TO_DATE('24-FEB-2004')
ORDER BY CARRIER_REFEREN CE_NUMBER,
Fleet_Size_Effe ctive_From_Date ,
Fleet_Size_Effe ctive_To_Date,
CURRENT_FLEET_S IZE
*************** *************** *************** *************** *************** ***
Statement #2
SELECT CARRIER_REFEREN CE_NUMBER,
CURRENT_FLEET_S IZE,
TRUNC(Fleet_Siz e_Effective_Fro m_Date) AS START_DATE,
TRUNC(Fleet_Siz e_Effective_To_ Date) AS END_DATE
FROM CAPS.CARRIER_FL EET_SIZE_HISTOR Y
WHERE CARRIER_REFEREN CE_NUMBER = 481
AND TO_DATE(Fleet_S ize_Effective_T O_Date,'DD-MON-YYYY') >=
TO_DATE(ADD_MON THS(SYSDATE, -12),'DD-MON-YYYY')
AND TRUNC(Fleet_Siz e_Effective_Fro m_Date) <=
TO_CHAR(SYSDATE ,'DD-MON-YYYY')
ORDER BY CARRIER_REFEREN CE_NUMBER,
Fleet_Size_Effe ctive_From_Date ,
Fleet_Size_Effe ctive_To_Date,
CURRENT_FLEET_S IZE
Statement #1 returns 13 records....stat ement #2 returns 5 records.
Both Fleet_Size_Effe ctive_TO_Date and Fleet_Size_Effe ctive_From_Date
are of a DATE datatype. I am trying to restrict the query to the
sysdate as an end date, and sysdate - 12 months as a start date.
What's wrong with my date math?
Any input into this would be greatly appreciated.
1  8338 
Alex wrote: I have two SQL statements:
Statement #1
SELECT CARRIER_REFEREN CE_NUMBER,
CURRENT_FLEET_S IZE,
trunc(Fleet_Siz e_Effective_Fro m_Date),
trunc(Fleet_Siz e_Effective_To_ Date)
FROM CAPS.CARRIER_FL EET_SIZE_HISTOR Y
WHERE CARRIER_REFEREN CE_NUMBER = 481
AND trunc(Fleet_Siz e_Effective_TO_ Date) >=
TO_DATE('24-FEB-2003') AND trunc(Fleet_Siz e_Effective_Fro m_Date) <=
TO_DATE('24-FEB-2004')
ORDER BY CARRIER_REFEREN CE_NUMBER,
Fleet_Size_Effe ctive_From_Date ,
Fleet_Size_Effe ctive_To_Date,
CURRENT_FLEET_S IZE
*************** *************** *************** *************** *************** ***
Statement #2
SELECT CARRIER_REFEREN CE_NUMBER,
CURRENT_FLEET_S IZE,
TRUNC(Fleet_Siz e_Effective_Fro m_Date) AS START_DATE,
TRUNC(Fleet_Siz e_Effective_To_ Date) AS END_DATE
FROM CAPS.CARRIER_FL EET_SIZE_HISTOR Y
WHERE CARRIER_REFEREN CE_NUMBER = 481
AND TO_DATE(Fleet_S ize_Effective_T O_Date,'DD-MON-YYYY') >=
TO_DATE(ADD_MON THS(SYSDATE, -12),'DD-MON-YYYY')
AND TRUNC(Fleet_Siz e_Effective_Fro m_Date) <=
TO_CHAR(SYSDATE ,'DD-MON-YYYY')
ORDER BY CARRIER_REFEREN CE_NUMBER,
Fleet_Size_Effe ctive_From_Date ,
Fleet_Size_Effe ctive_To_Date,
CURRENT_FLEET_S IZE
Statement #1 returns 13 records....stat ement #2 returns 5 records.
Both Fleet_Size_Effe ctive_TO_Date and Fleet_Size_Effe ctive_From_Date
are of a DATE datatype. I am trying to restrict the query to the
sysdate as an end date, and sysdate - 12 months as a start date.
What's wrong with my date math?
Any input into this would be greatly appreciated.
Sysdate is today - not Feb, 24!
Also, the second query compares dates with characters (you
do use TO_CHAR(SYSDATE ...)) and may thus not perform as well
--
Regards,
Frank van Bortel This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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