I’ve written an SQL query that produces a report of some stats for each Year-Week-Mine-Product.
It works exactly as desired except for one thing – trn.wid-date isn’t the correct date to be using.
I should be using td.datetime-act-comp-dump. When I replace trn.wid-date with td.datetime-act-comp-dump, it doesn’t give me any errors but seems to just hang indefinitely. I let it go for a while yesterday and it came back with ORA-01652 unable to extend temp segment by 128 in tablespace TEMP, though I haven’t seen that error since.
I don’t understand what might be causing that considering that I’m able to successfully return MAX(td.datetime-act-comp-dump) in the query below
select to_char(trn.wid_date, 'IYYY') as dump_year,
to_char(trn.wid_date-7/24, 'IW') as dump_week,
SUBSTR(trn.train_control_id,1,2) as Mine,
vcon.product_type_code as Product,
COUNT(DISTINCT trn.train_control_id) as Trains,
COUNT(1) as Wagons,
MIN(trn.wid_date) as Min_WID_Hrs,
MAX(trn.wid_date) as Max_WID_Hrs,
MIN(td.datetime_act_comp_dump) as Min_Fin_Dump,
MAX(td.datetime_act_comp_dump) as Max_Fin_Dump,
ROUND(SUM(con.weight_total-con.empty_weight_total),0) as Tot_Tonnes,
ROUND(AVG(con.weight_total-con.empty_weight_total),2) as Avg_Tonnes,
ROUND(MIN(con.weight_total-con.empty_weight_total),2) as Minimum,
ROUND(PERCENTILE_DISC(0.99) WITHIN GROUP (ORDER BY (con.weight_total-con.empty_weight_total) DESC),2) as "1st",
from widsys.consist con
INNER JOIN widsys.train trn
USING (train_record_id)
INNER JOIN tpps.train_details td
ON trn.train_tpps_id||trn.mine_code = td.train_id||td.mine_code
INNER JOIN widsys.v_consist_ore_detail vcon
USING (consist_id)
where trn.direction = 'N'
and to_char(trn.wid_date, 'IYYY') = 2009
and to_char(trn.wid_date-7/24, 'IW') = 25
group by to_char(trn.wid_date, 'IYYY'),
to_char(trn.wid_date-7/24, 'IW'),
SUBSTR(trn.train_control_id,1,2),
vcon.product_type_code
order by to_char(trn.wid_date-7/24, 'IW') DESC
Just in order to troubleshoot, from the query above, I’ve tried removing everything to do with vcon and replacing trn.wid_date with td.datetime-act-comp-dump. The effect is that it only reports on Year-Week-Mine rather than Year-Week-Mine-Product. (see query below)
This new query actually executes rather than just hanging, but returns a few odd results and doesn’t isn’t sufficient since it doesn’t break things down on Product.
select to_char(td.datetime_act_comp_dump, 'IYYY') as dump_year,
to_char(td.datetime_act_comp_dump-7/24, 'IW') as dump_week,
SUBSTR(trn.train_control_id,1,2) as Mine,
--vcon.product_type_code as Product,
COUNT(DISTINCT trn.train_control_id) as Trains,
COUNT(1) as Wagons,
MIN(trn.wid_date) as Min_WID_Hrs,
MAX(trn.wid_date) as Max_WID_Hrs,
MIN(td.datetime_act_comp_dump) as Min_Fin_Dump,
MAX(td.datetime_act_comp_dump) as Max_Fin_Dump,
ROUND(SUM(con.weight_total-con.empty_weight_total),0) as Tot_Tonnes,
ROUND(AVG(con.weight_total-con.empty_weight_total),2) as Avg_Tonnes,
ROUND(MIN(con.weight_total-con.empty_weight_total),2) as Minimum,
ROUND(PERCENTILE_DISC(0.99) WITHIN GROUP (ORDER BY (con.weight_total-con.empty_weight_total) DESC),2) as "1st"
from widsys.consist con
INNER JOIN widsys.train trn
USING (train_record_id)
INNER JOIN tpps.train_details td
ON trn.train_tpps_id||trn.mine_code = td.train_id||td.mine_code
--INNER JOIN widsys.v_consist_ore_detail vcon
--USING (consist_id)
where trn.direction = 'N'
and to_char(td.datetime_act_comp_dump, 'IYYY') = 2009
and to_char(td.datetime_act_comp_dump-7/24, 'IW') = 25
group by to_char(td.datetime_act_comp_dump, 'IYYY'),
to_char(td.datetime_act_comp_dump-7/24, 'IW'),
SUBSTR(trn.train_control_id,1,2)
--vcon.product_type_code
order by to_char(td.datetime_act_comp_dump-7/24, 'IW') DESC
Any advice on what might be going wrong?
Cheers,
Tommy
I managed to get it to run muuuuuuuch faster by creating a subquery for widsys tables and one for tpps tables. Then doing an implicit inner join on two columns instead of concatenating.