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i got this error 1104: while executing the query

Discussion in 'Databases' started by sukhpreet_ahluwalia, Jul 15, 2008.

  1. #1
    i got this error:
    ERROR 1104: The SELECT would examine too many records and probably take a very long time. Check your WHERE and use SET OPTION SQL_BIG_SELECTS=1 if the SELECT is ok.

    I used set sql_big_select= 1; statement before the query. But still the problem
    is continuing.

    Query is such that there are four tables feeder,sentout,ht and lt... now in feeder and sentout the fields feeder_code and subdivision_code combination row is unique...But in the ht and lt tables the feeder and can have combination with different subdivisions which is now not fixed..Now i want resultset and feeder_code and subdivision.. having all the combination in the four tables...

    Query is as below
    SELECT distinct f.feeder_code ,f.subdivision_code from feeder as f,sentout as sot,ht,lt where
    (f.feeder_code = lt.feeder_code and f.subdivision_code = lt.subdivision_code and
    lt.month = 4 and lt.year = or (f.feeder_code = ht.feeder_code and f.subdivision_code = ht.subdivision_code
    and ht.month = 3 and ht.year = or (f.feeder_code = sot.feeder_code and
    f.subdivision_code = sot.subdivision_code and sot.month = 3 and sot.year =
    (SELECT distinct lt.feeder_code ,lt.subdivision_code from feeder as f,lt where lt.feeder_code != f.feeder_code
    and lt.subdivision_code != f.subdivision_code and
    lt.month = 4 and lt.year =
    (SELECT distinct ht.feeder_code ,ht.subdivision_code from feeder as f,ht where ht.feeder_code != f.feeder_code and ht.subdivision_code != f.subdivision_code and
    ht.month = 3 and ht.year = 8 )
    order by feeder_code,subdivision_code

    Plz help me as soon as possible. I have to solve the issue at earliest.
    sukhpreet_ahluwalia, Jul 15, 2008 IP