選択を行った後、データに対して自己結合と個別化を行っています。このクエリを記述するより良い方法があるかどうかはわかりません。提案していただけますか？
以下は、クエリと説明計画の出力です。
WITH data
AS ( SELECT san.S1FK_C_ID,
san.S1FK_CF_ID,
san.S1FK_A_ID,
san.S1FK_A_TYPE,
san.S1FK_S_TYPE,
san.S1FK_B_FUNC,
AU.AS1FK_A_ID,
AU.AS1FK_B_FUNC,
AU.AS1FK_S_TYPE,
AU.AS1FK_T_CODE,
A2FK_B_ID,
A2FK_NBR,
A2FK_C_CD,
A1FK_B_ID,
A1FK_NBR,
A1FK_C_CD,
AU.R_NAME,
IND
FROM N_RULE cnr,
SAN san,
ACCT_USG AU
WHERE AU.R_NAME = CNR.R_NAME
AND AU.A2FK_C_CD = CNR.C_CD
AND AU.AS1FK_B_FUNC = CNR.B_FUNC
AND AU.AS1FK_A_ID = san.AS1FK_ID || ''
AND AU.AS1FK_B_FUNC = san.AS1FK_B_FUNC
AND AU.AS1FK_S_TYPE = san.AS1FK_S_TYPE
AND AU.AS1FK_T_CODE = san.AS1FK_A_TYPE
AND CNR.FM_CODE = 'SP'
AND san.STATUS = 'A'
AND san.AS1FK_B_FUNC = CNR.B_FUNC
ORDER BY AU.AS1FK_A_ID)
SELECT DISTINCT A.A2FK_C_CD AS C_CD,
-- secondary id's
B.S1FK_C_ID AS C_ID_2,
B.S1FK_CF_ID AS CF_ID_2,
B.S1FK_A_ID AS A_ID_2,
B.S1FK_B_FUNC AS B_FUNC_2,
B.S1FK_S_TYPE AS S_TYPE_2,
B.S1FK_A_TYPE AS A_TYPE_2,
--primary id's
A.S1FK_A_ID AS A_ID_1,
A.S1FK_B_FUNC AS B_FUNC_1,
A.S1FK_S_TYPE AS S_TYPE_1,
A.S1FK_A_TYPE AS A_TYPE_1
FROM data A, --A is the set of primary and standalone id's
data B
--B is the primary and secondary id's
WHERE
B .R_NAME = A.R_NAME
--as join
AND B.AS1FK_B_FUNC = A.AS1FK_B_FUNC
AND B.AS1FK_S_TYPE = A.AS1FK_S_TYPE
AND B.AS1FK_T_CODE = A.AS1FK_T_CODE
--accts join
AND B.A2FK_NBR = A.A2FK_NBR
AND B.A2FK_B_ID = A.A2FK_B_ID
AND B.A2FK_C_CD = A.A2FK_C_CD
AND B.A1FK_NBR = A.A1FK_NBR
AND B.A1FK_B_ID = A.A1FK_B_ID
AND B.A1FK_C_CD = A.A1FK_C_CD
--s fk join
AND B.S1FK_C_ID = A.S1FK_C_ID
AND B.S1FK_CF_ID = A.S1FK_CF_ID
AND B.S1FK_S_TYPE = A.S1FK_S_TYPE
AND B.S1FK_B_FUNC = A.S1FK_B_FUNC
AND B.S1FK_A_TYPE = A.S1FK_A_TYPE
AND ( --join secondary ( N ) and primary id's ( Y ) to primary id's
( 'Y' = A.IND
AND B.IND IN ('N', 'Y') )
OR --join standalone ( ' ' ) id's to themselves
( ' ' = B.IND
AND ' ' = A.IND )
AND B.AS1FK_A_ID = A.AS1FK_A_ID
);
プラン：
PLAN_TABLE_OUTPUT
Plan hash value: 3120521488
----------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
----------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 450 | 18 (17)| 00:00:01 |
| 1 | TEMP TABLE TRANSFORMATION | | | | | |
| 2 | LOAD AS SELECT | SYS_TEMP_0FD9D949F_E879D9BC | | | | |
| 3 | SORT ORDER BY | | 1 | 296 | 12 (9)| 00:00:01 |
| 4 | NESTED LOOPS | | 1 | 296 | 11 (0)| 00:00:01 |
| 5 | NESTED LOOPS | | 7412 | 1889K| 11 (0)| 00:00:01 |
|* 6 | TABLE ACCESS FULL | SAN | 255 | 20910 | 11 (0)| 00:00:01 |
| 7 | TABLE ACCESS BY INDEX ROWID| ACCT_USG | 29 | 5191 | 0 (0)| 00:00:01 |
|* 8 | INDEX RANGE SCAN | ACCT_USG_PK | 1 | | 0 (0)| 00:00:01 |
|* 9 | INDEX UNIQUE SCAN | N_RULE_PK | 1 | 35 | 0 (0)| 00:00:01 |
| 10 | HASH UNIQUE | | 1 | 450 | 6 (34)| 00:00:01 |
|* 11 | HASH JOIN | | 1 | 450 | 5 (20)| 00:00:01 |
| 12 | VIEW | | 1 | 225 | 2 (0)| 00:00:01 |
| 13 | TABLE ACCESS FULL | SYS_TEMP_0FD9D949F_E879D9BC | 1 | 225 | 2 (0)| 00:00:01 |
| 14 | VIEW | | 1 | 225 | 2 (0)| 00:00:01 |
| 15 | TABLE ACCESS FULL | SYS_TEMP_0FD9D949F_E879D9BC | 1 | 225 | 2 (0)| 00:00:01 |
----------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
6 - filter("SAN"."EFF_STATUS_CODE"='A')
8 - access("AU"."AS1FK_A_ID"="SAN"."AS1FK_ID"||'' AND
"AU"."AS1FK_T_CODE"="SAN"."AS1FK_A_TYPE" AND
"AU"."AS1FK_S_TYPE"="SAN"."AS1FK_S_TYPE" AND
"AU"."AS1FK_B_FUNC"="SAN"."AS1FK_B_FUNC")
9 - access("CNR"."FM_CODE"='SP' AND "SAN"."S1FK_C_ID"="CNR"."CLRG_ORG_ID" AND
"SAN"."AS1FK_B_FUNC"="CNR"."B_F_CODE" AND "AU"."A2FK_C_CD"="CNR"."C_CD" AND
"AU"."R_NAME"="CNR"."R_NAME")
filter("AU"."AS1FK_B_FUNC"="CNR"."B_F_CODE")
11 - access("B"."R_NAME"="A"."R_NAME" AND "B"."AS1FK_B_FUNC"="A"."AS1FK_B_FUNC" AND
"B"."AS1FK_S_TYPE"="A"."AS1FK_S_TYPE" AND "B"."AS1FK_T_CODE"="A"."AS1FK_T_CODE"
AND "B"."A2FK_NBR"="A"."A2FK_NBR" AND "B"."A2FK_B_ID"="A"."A2FK_B_ID" AND
"B"."A2FK_C_CD"="A"."A2FK_C_CD" AND "B"."A1FK_NBR"="A"."A1FK_NBR" AND
"B"."A1FK_B_ID"="A"."A1FK_B_ID" AND "B"."A1FK_C_CD"="A"."A1FK_C_CD" AND
"B"."S1FK_C_ID"="A"."S1FK_C_ID" AND "B"."S1FK_CF_ID"="A"."S1FK_CF_ID" AND
"B"."S1FK_S_TYPE"="A"."S1FK_S_TYPE" AND "B"."S1FK_B_FUNC"="A"."S1FK_B_FUNC" AND
"B"."STACO1FK_A_TYPE"="A"."STACO1FK_A_TYPE")
filter("A"."IND"='Y' AND ("B"."IND"='N' OR
"B"."IND"="A"."IND") OR "B"."IND"=' ' AND
"A"."IND"=' ' AND "B"."AS1FK_A_ID"="A"."AS1FK_A_ID" AND
"B"."IND"="A"."IND")
EDIT
~~~~
- 上記の SQL を編集して、自己結合と不要なグループ化を削除しました。
- 結合に基づいて primary_secondary 行のみでグループ化を行っています。
- プライマリとセカンダリの間で、セカンダリに接続するプライマリ アカウントを決定しています。
これは同じ結果をもたらしています。これをさらに改善できないかと考えています。
WITH data
AS ( SELECT sanw.STAC01FK_C_ID,
sanw.STAC01FK_CF_ID,
sanw.STAC01FK_A_ID,
sanw.STACO1FK_A_TYPE,
sanw.STAC01FK_S_TYPE,
sanw.STAC01FK_B_FUNC,
BAU.ASAC01FK_A_ID,
BAU.ASAC01FK_B_FUNC,
BAU.ASAC01FK_S_TYPE,
BAU.ASAC01FK_TYPE_CODE,
BAAC02FK_BANK_ID,
BAAC02FK_NBR,
BAAC02FK_CURR_CD,
BAAC01FK_BANK_ID,
BAAC01FK_NBR,
BAAC01FK_CURR_CD,
BAU.R_NAME,
PRIMARY_ACCT_IND
FROM N_RULE cnr,
SAN sanw,
ACCT_USG bau
WHERE BAU.R_NAME = CNR.R_NAME
AND BAU.BAAC02FK_CURR_CD = CNR.C_CD
AND BAU.ASAC01FK_B_FUNC = CNR.B_FUNC_CD
AND BAU.ASAC01FK_A_ID = sanw.ASAC01FK_ID
AND BAU.ASAC01FK_B_FUNC = sanw.ASAC01FK_B_FUNC
AND BAU.ASAC01FK_S_TYPE = sanw.ASAC01FK_S_TYPE
AND BAU.ASAC01FK_TYPE_CODE = sanw.ASAC01FK_A_TYPE
AND CNR.FM_CODE = 'SP'
AND sanw.EFF_STATUS_CODE = 'A'
AND sanw.ASAC01FK_B_FUNC = CNR.B_FUNC_CD),
primary_secondary
AS (SELECT PRIMARY_ACCT_IND,
B.BAAC02FK_CURR_CD AS C_CD,
B.STAC01FK_C_ID AS C_ID_2,
B.STAC01FK_CF_ID AS CF_ID_2,
-- secondary accounts
B.STAC01FK_A_ID AS A_ID_2,
B.STAC01FK_B_FUNC AS B_FUNC_2,
B.STAC01FK_S_TYPE AS S_TYPE_2,
B.STACO1FK_A_TYPE AS A_TYPE_2,
--primary accounts
B.STAC01FK_A_ID AS A_ID_1,
B.STAC01FK_B_FUNC AS B_FUNC_1,
B.STAC01FK_S_TYPE AS S_TYPE_1,
B.STACO1FK_A_TYPE AS A_TYPE_1,
RANK ()
OVER (
PARTITION BY
--bank acct join
B.BAAC02FK_CURR_CD,
--sa join
B.STAC01FK_S_TYPE,
B.STAC01FK_B_FUNC,
B.STACO1FK_A_TYPE,
B.STAC01FK_C_ID,
B.STAC01FK_CF_ID
ORDER BY
PRIMARY_ACCT_IND DESC)
AS d_rank
FROM data B
WHERE B.PRIMARY_ACCT_IND IN ('Y', 'N')),
stand_alone
AS (SELECT B.BAAC02FK_CURR_CD AS C_CD,
B.STAC01FK_C_ID AS C_ID_2,
B.STAC01FK_CF_ID AS CF_ID_2,
-- secondary accounts
B.STAC01FK_A_ID AS A_ID_2,
B.STAC01FK_B_FUNC AS B_FUNC_2,
B.STAC01FK_S_TYPE AS S_TYPE_2,
B.STACO1FK_A_TYPE AS A_TYPE_2,
--primary accounts
B.STAC01FK_A_ID AS A_ID_1,
B.STAC01FK_B_FUNC AS B_FUNC_1,
B.STAC01FK_S_TYPE AS S_TYPE_1,
B.STACO1FK_A_TYPE AS A_TYPE_1
FROM data B
WHERE B.PRIMARY_ACCT_IND = ' '),
PRIMARY
AS (SELECT C_CD,
C_ID_2,
CF_ID_2,
-- secondary accounts
A_ID_2,
B_FUNC_2,
S_TYPE_2,
A_TYPE_2,
--primary accounts
A_ID_1,
B_FUNC_1,
S_TYPE_1,
A_TYPE_1
FROM primary_secondary
WHERE D_RANK = 1),
SECONDARY
AS (SELECT ps.C_CD,
ps.C_ID_2,
ps.CF_ID_2,
-- secondary accounts
ps.A_ID_2,
ps.B_FUNC_2,
ps.S_TYPE_2,
ps.A_TYPE_2,
--primary accounts
p.A_ID_1,
p.B_FUNC_1,
p.S_TYPE_1,
p.A_TYPE_1
FROM primary_secondary ps, primary p
WHERE ps.D_RANK <> 1
AND ps.C_CD = p.C_CD
AND ps.C_ID_2 = p.C_ID_2
AND ps.CF_ID_2 = p.CF_ID_2
-- secondarary accounts
AND ps.B_FUNC_2 = p.B_FUNC_2
AND ps.S_TYPE_2 = p.S_TYPE_2
AND ps.A_TYPE_2 = p.A_TYPE_2)
SELECT * FROM secondary
UNION ALL
SELECT * FROM primary
UNION ALL
SELECT * FROM stand_alone
予定：
Plan hash value: 3159296610
----------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
----------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 33 | 3421 | 9 (56)| 00:00:01 |
| 1 | TEMP TABLE TRANSFORMATION | | | | | |
| 2 | LOAD AS SELECT | SYS_TEMP_0FD9DBAF1_9261CF31 | | | | |
|* 3 | HASH JOIN | | 11 | 3058 | 119 (1)| 00:00:02 |
|* 4 | HASH JOIN | | 96 | 18816 | 104 (1)| 00:00:02 |
|* 5 | INDEX RANGE SCAN | CNR_PK | 61 | 1769 | 1 (0)| 00:00:01 |
| 6 | TABLE ACCESS FULL | ACCT_USG | 8244 | 1344K| 102 (0)| 00:00:02 |
|* 7 | TABLE ACCESS FULL | SAN | 1444 | 115K| 15 (0)| 00:00:01 |
| 8 | LOAD AS SELECT | SYS_TEMP_0FD9DBAF2_9261CF31 | | | | |
| 9 | WINDOW SORT | | 11 | 594 | 3 (34)| 00:00:01 |
|* 10 | VIEW | | 11 | 594 | 2 (0)| 00:00:01 |
| 11 | TABLE ACCESS FULL | SYS_TEMP_0FD9DBAF1_9261CF31 | 11 | 2343 | 2 (0)| 00:00:01 |
| 12 | LOAD AS SELECT | SYS_TEMP_0FD9DBAF3_9261CF31 | | | | |
|* 13 | VIEW | | 11 | 1089 | 2 (0)| 00:00:01 |
| 14 | TABLE ACCESS FULL | SYS_TEMP_0FD9DBAF2_9261CF31 | 11 | 682 | 2 (0)| 00:00:01 |
| 15 | UNION-ALL | | | | | |
|* 16 | HASH JOIN | | 11 | 1672 | 5 (20)| 00:00:01 |
|* 17 | VIEW | | 11 | 792 | 2 (0)| 00:00:01 |
| 18 | TABLE ACCESS FULL | SYS_TEMP_0FD9DBAF2_9261CF31 | 11 | 682 | 2 (0)| 00:00:01 |
| 19 | VIEW | | 11 | 880 | 2 (0)| 00:00:01 |
| 20 | TABLE ACCESS FULL | SYS_TEMP_0FD9DBAF3_9261CF31 | 11 | 946 | 2 (0)| 00:00:01 |
| 21 | VIEW | | 11 | 1067 | 2 (0)| 00:00:01 |
| 22 | TABLE ACCESS FULL | SYS_TEMP_0FD9DBAF3_9261CF31 | 11 | 946 | 2 (0)| 00:00:01 |
|* 23 | VIEW | | 11 | 682 | 2 (0)| 00:00:01 |
| 24 | TABLE ACCESS FULL | SYS_TEMP_0FD9DBAF1_9261CF31 | 11 | 2343 | 2 (0)| 00:00:01 |
----------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
3 - access("BAU"."ASAC01FK_A_ID"="SANW"."ASAC01FK_ID"||'' AND
"BAU"."ASAC01FK_B_FUNC"="SANW"."ASAC01FK_B_FUNC" AND
"BAU"."ASAC01FK_S_TYPE"="SANW"."ASAC01FK_S_TYPE" AND
"BAU"."ASAC01FK_TYPE_CODE"="SANW"."ASAC01FK_A_TYPE" AND
"SANW"."ASAC01FK_B_FUNC"="CNR"."B_FUNC_CD")
4 - access("BAU"."R_NAME"="CNR"."R_NAME" AND
"BAU"."BAAC02FK_CURR_CD"="CNR"."C_CD" AND
"BAU"."ASAC01FK_B_FUNC"="CNR"."B_FUNC_CD")
5 - access("CNR"."FM_CODE"='SP')
7 - filter("SANW"."EFF_STATUS_CODE"='A')
10 - filter("B"."PRIMARY_ACCT_IND"='N' OR "B"."PRIMARY_ACCT_IND"='Y')
13 - filter("D_RANK"=1)
16 - access("PS"."C_CD"="P"."C_CD" AND "PS"."C_ID_2"="P"."C_ID_2" AND
"PS"."CF_ID_2"="P"."CF_ID_2" AND "PS"."B_FUNC_2"="P"."B_FUNC_2" AND
"PS"."S_TYPE_2"="P"."S_TYPE_2" AND "PS"."A_TYPE_2"="P"."A_TYPE_2")
17 - filter("PS"."D_RANK"<>1)
23 - filter("B"."PRIMARY_ACCT_IND"=' ')