Hi All,
Can any one tell me what i am doing wrong here , the following update for millions of records takes hell lot of time.
How can i make this update faster.
Thanks in advance.
Kannan
> Update BR SET PPO =
> ROUND(100*ST.PPO,2)
> PSO = ROUND(100*ST.PSO,2)
> KPO = ROUND(100*ST.KPO,2)
> KSO = ROUND(100*ST.KSO,2)
>
> FROM TABLEA INNER JOIN
>
> (SELECT ID, MAX(CASE WHEN COUNTRYID =
> 1 THEN STRENGTH ELSE 0 END ) PPO,
> MAX(CASE WHEN COUNTRYID = 3 THEN SCOPE
> ELSE 0 END) PSO, MAX(CASE WHEN
> COUNTRYID = 4 THEN TOTAL ELSE 0 END)
> KPO, MAX(CASE WHEN COUNTRYID = 5 THEN
> VALUE ELSE 0 END) KSO FROM TABLEA
> INNER JOIN COUNTRY ON TABLEA.COUNTRYID
> = COUNTRY.COUNTRYID AND COUNTRYID IN (1,3,4,5)) ST
>
>
> ON TABLEA.ID = ST.ID
↧
