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Old 03-04-04, 08:52
martin_jo martin_jo is offline
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Join Date: Mar 2004
Posts: 1
SQL statement tuning

I have the following SQL statement which is going WAY to slow. Anyone have an idea on how to speed it up?

/Martin

SELECT T1.SHIPMENT_DATE__ISO_ AS SHIPMENT_DATE__ISO_,
T1.TOTAL_GROSS_WEIGHT AS TOTAL_GROSS_WEIGHT,
T1.NUMBER_OF_PACKAGES AS NUMBER_OF_PACKAGES,
T1.TOTAL_VOLUME AS TOTAL_VOLUME,
T1.ISO_COUNTRY_OF_DESTIN_ AS ISO_COUNTRY_OF_DESTIN_,
(UCASE(T2.ADDRESS_LINE_1)) AS ADDRESS_LINE_1_TYP4,
(UCASE(T2.ADDRESS_LINE_4)) AS ADDRESS_LINE_4_TYP4,
T3.PARTY_ID AS PARTY_ID,
(UCASE(T3.ADDRESS_LINE_1)) AS ADDRESS_LINE_1_TYP3,
(UCASE(T3.ADDRESS_LINE_4)) AS ADDRESS_LINE_4_TYP3,
T3.ISO_COUNTRY_CODE AS ISO_COUNTRY_CODE,
T4.CARRIER_CODE AS CARRIER_CODE,
T5.MODE_OF_TRANSPORT AS MODE_OF_TRANSPORT,
T1.TRANSPORT_MODE_CODE AS TRANSPORT_MODE_CODE

FROM GTFG2.GTADDR T2,
GTFG2.GTTRPI T1,
GTFG2.GTADDR T3,
(GTFG2.GTTMCC T5 LEFT OUTER JOIN GTFG2.GTTCAR T4 ON ((T5.TRANSPORT_MODE_CODE = T4.TRANSPORT_MODE_CODE)
AND (T5.ISO_COUNTRY_OF_DEPARTURE = T4.ISO_COUNTRY_OF_DEPARTURE))
AND (T5.ISO_COUNTRY_OF_DESTIN_ = T4.ISO_COUNTRY_OF_DESTIN_))

WHERE ((T1.TIMESTAMP = T2.TIMESTAMP) AND (T2.TYPE_OF_ADDRESS = '4'))
AND ((T1.TIMESTAMP = T3.TIMESTAMP) AND (T3.TYPE_OF_ADDRESS = '3'))
AND (((T1.TRANSPORT_MODE_CODE = T5.TRANSPORT_MODE_CODE)
AND ((T1.ISO_COUNTRY_OF_DEPARTURE = T5.ISO_COUNTRY_OF_DEPARTURE) OR (T5.ISO_COUNTRY_OF_DEPARTURE = '*')))
AND ((T1.ISO_COUNTRY_OF_DESTIN_= T5.ISO_COUNTRY_OF_DESTIN_) OR (T5.ISO_COUNTRY_OF_DESTIN_ = '*')))
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Old 03-04-04, 22:55
Pat Phelan Pat Phelan is offline
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Join Date: Feb 2004
Location: In front of the computer
Posts: 12,605
The OR operators in the WHERE clause are probably forcing a table scan. Test this by removing them. If that works, consider creating four queries and selecting between them using code, or via UNIONs.

-PatP
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