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IDS Forum

Functions taking more time execute

Date: Saturday, 8 July 2017, at 1:53 a.m.

Hello Friends,
Thanks for all who are responding for every query and who are very much active in this group.

I am posing a strange question.

I have a select query which retries only one day data from a lakhs of records.
it takes an execution time of less than 50 milliseconds.

But when i put this SELECT statement inside a function with input arguments as start date and end date.

While executing this function only for 1 day also its taking very long time more than 4 minutes.

Im not able to trace the reason. Could anyone help on this how to find the reason?

Below is my Query:

CREATE FUNCTION neura_ikonkrishi_pp.laboratory_worklist_ipd(start_date Date,end_date Date)

DEFINE v_patient_id VARCHAR(15);
DEFINE v_patient_name VARCHAR(100);
DEFINE v_patient_category_desc VARCHAR(50);
DEFINE v_gender VARCHAR(15);
DEFINE v_episode_id VARCHAR(15);
DEFINE v_order_id VARCHAR(15);
DEFINE v_generated_by VARCHAR(100);
DEFINE v_count INT8;
DEFINE v_bed_name VARCHAR(100);
DEFINE v_floor_name VARCHAR(100);
DEFINE v_nursing_station VARCHAR(100);

/* This Function is used under Laboratory Worklist Screen : Java side */
/* This will return Laboratory Department Patient Details */
/* Only IPD Scenario */

FOREACH lab_wl_ipd FOR

pdt.first_name||' '||pdt.last_name as Patient_Name,
(select patient_category_desc from master_patientcategory_tbl where patient_category_id = pdt.patient_category_id) as Patient_Category,
(select gender_desc from master_gender_tbl where gender_id=pdt.gender_id) as Gender,
ROUND(months_between(SYSDATE,pdt.DOB)/12) ||' years '|| ROUND(months_between(SYSDATE,pdt.DOB)-(TRUNC(months_between(SYSDATE,pdt.DOB)/12)*12))||' Months ' as age,
(select count(esrt1.priority) from episode_service_rendered_tbl esrt1
where esrt1.order_id=esrt.order_id and esrt1.priority=1 and esrt1.episode_id=esrt.episode_id),

(select mbt.bed_name from master_bed_tbl mbt,book_bed_tbl bbt where mbt.bed_id=bbt.bed_id
and bbt.cancel_flag=0 and bbt.episode_id=edt.episode_id) as Bed_Name,

(select mft.floor_desc from master_bed_tbl mbt,nursing_category_assgn_tbl ncat,book_bed_tbl bbt,master_floor_tbl mft
where mbt.nursing_category_assgn_id=ncat.nursing_category_assgn_id and mbt.bed_id=bbt.bed_id
and bbt.cancel_flag=0 and bbt.episode_id=edt.episode_id and ncat.floor_id=mft.floor_id) as Floor_Name,

(select mnst.nursing_station_desc from master_nursing_station_tbl mnst,book_bed_tbl bbt,
master_bed_tbl mbt,nursing_category_assgn_tbl ncat where bbt.bed_id=mbt.bed_id
and mbt.nursing_category_assgn_id=ncat.nursing_category_assgn_id and ncat.nursing_station_id=mnst.nursing_station_id
and bbt.episode_id=edt.episode_id) as Nursing_Station
patient_details_tbl pdt,
episode_details_tbl edt,
episode_service_rendered_tbl esrt
pdt.patient_id = edt.patient_id
and edt.episode_id = esrt.episode_id
and esrt.delete_flag = 1
and esrt.material_group_sp_id = 29
and esrt.service_avail = 0
and edt.episode_type IN ('ipd','emg','dac')
and esrt.generated_date between start_date and end_date
esrt.generated_time desc

RETURN v_patient_id,v_patient_name,v_patient_category_desc,v_gender,v_age,v_episode_id,v_order_id,v_generated_by,
v_generated_time,v_count,v_bed_name,v_floor_name,v_nursing_station WITH RESUME;


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