re: Query from hell
- From: Paula Stankus <paulastankus@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Thu, 19 Oct 2006 06:51:38 -0700 (PDT)
Listed below is a sample of some horrific SQL. As you can see it joins
multiple tables together (large ones) 67 times only to add a literal (the
county number) to a specific field each time. I know that there is a better
way to do this. I am thinking a temporary table with the joined data then just
reading through the data to produce the one concatenated field but I was
wondering if an inline view would be better.
Any suggestions would be greatly appreciated.
prompt create mv_plan_county_factor;
DROP MATERIALIZED VIEW MV_PLAN_COUNTY_FACTOR;
alter session set transaction use rollback segment=
CREATE MATERIALIZED VIEW MV_PLAN_COUNTY_FACTOR
TABLESPACE USERS
NOLOGGING
BUILD IMMEDIATE
REFRESH FORCE
NEXT TRUNC(SYSDATE) + 200 + 3 / 24
AS
SELECT sd.sercs_data_id PLAN_ID
,sd2.sercs_data_id || '01' COUNTY_FACTOR_ID
,ds.created_by_id
,SYSDATE date_created
FROM idcs.sercs_data sd
,idcs.sercs_data sd2
,idcs.sercs_data sd3
,idcs.data_submission ds
,idcs.data_collection dc
,ifass.filing f
,ifass.filing_component fc
,ifass.filing_authority fa
,edms.filing_main fm
WHERE ds.status_ind = 1 -- APPROVED
AND f.filing_status_id = 5 -- FINAL ACTION
AND ds.data_collection_id = 6 -- SERCS
AND ds.no_data_ind = 0 -- DATA FILING
AND NOT sd.column_fn IS NULL
AND sd2.column_bv = sd.column_fw
AND
SERC.PKG_COMMON.County_MV_Check(ds.data_submission_id,fa.authority_id,sd3.column_d)
= 1
AND fm.final_disposition = 'APPROVED'
-- JOINS
AND sd.data_submission_id = ds.data_submission_id
AND sd2.data_submission_id = sd.data_submission_id
AND sd3.data_submission_id = sd.data_submission_id
AND ds.data_collection_id = dc.data_collection_id
AND ds.filing_id = f.filing_id
AND f.filing_id = fc.filing_id
AND fc.filing_component_id = fa.filing_component_id
AND f.file_log_num = fm.file_log_num
UNION
SELECT sd.sercs_data_id PLAN_ID
,sd2.sercs_data_id || '02' COUNTY_FACTOR_ID
,ds.created_by_id
,SYSDATE date_created
FROM idcs.sercs_data sd
,idcs.sercs_data sd2
,idcs.sercs_data sd3
,idcs.data_submission ds
,idcs.data_collection dc
,ifass.filing f
,ifass.filing_component fc
,ifass.filing_authority fa
,edms.filing_main fm
WHERE ds.status_ind = 1
AND f.filing_status_id = 5
AND ds.data_collection_id = 6
AND ds.no_data_ind = 0
AND NOT sd.column_fn IS NULL
AND sd2.column_bv = sd.column_fw
AND
SERC.PKG_COMMON.County_MV_Check(ds.data_submission_id,fa.authority_id,sd3.column_d)
= 1
AND fm.final_disposition = 'APPROVED'
AND sd.data_submission_id = ds.data_submission_id
AND sd2.data_submission_id = sd.data_submission_id
AND sd3.data_submission_id = sd.data_submission_id
AND ds.data_collection_id = dc.data_collection_id
AND ds.filing_id = f.filing_id
AND f.filing_id = fc.filing_id
AND fc.filing_component_id = fa.filing_component_id
AND f.file_log_num = fm.file_log_num
UNION
SELECT sd.sercs_data_id PLAN_ID
,sd2.sercs_data_id || '03' COUNTY_FACTOR_ID
,ds.created_by_id
,SYSDATE date_created
FROM idcs.sercs_data sd
,idcs.sercs_data sd2
,idcs.sercs_data sd3
,idcs.data_submission ds
,idcs.data_collection dc
,ifass.filing f
,ifass.filing_component fc
,ifass.filing_authority fa
,edms.filing_main fm
WHERE ds.status_ind = 1
AND f.filing_status_id = 5
AND ds.data_collection_id = 6
AND ds.no_data_ind = 0
AND NOT sd.column_fn IS NULL
AND sd2.column_bv = sd.column_fw
AND
SERC.PKG_COMMON.County_MV_Check(ds.data_submission_id,fa.authority_id,sd3.column_d)
= 1
AND fm.final_disposition = 'APPROVED'
AND sd.data_submission_id = ds.data_submission_id
AND sd2.data_submission_id = sd.data_submission_id
AND sd3.data_submission_id = sd.data_submission_id
AND ds.data_collection_id = dc.data_collection_id
AND ds.filing_id = f.filing_id
AND f.filing_id = fc.filing_id
AND fc.filing_component_id = fa.filing_component_id
AND f.file_log_num = fm.file_log_num
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