要求是以数据透视表格式重新生成结果。
我们每个月有22个表，每个表有大约150万行。所需的输出是每个产品/类别的22个表格保存信息，需要以列格式生成产品 在11g中我们使用了pivot函数来重现和10g我们编写了以下查询。此查询将继续运行1天而不会撤消任何结果，因为最大聚合函数需要花费大量时间来计算。有没有办法重写以下查询。SELECT year,month,account_id,media_id,status,
max(CP1) AS CP,
max(CA1) AS CA,
max(CU1) AS CU,
max(GENDER1) AS GENDER,
max(AGE1) AS AGE,
max(AREA1) AS AREA,
max(SB1) AS SB,
max(SSP1) AS SSP,
max(SRP) AS scheme_redem_prpt,
max(BAL1) AS BAL,
max(PTS_RE1) AS PTS_RE,
max(PTS_EA1) AS PTS_EA,
max(dept_01_txn1) AS dept_01_txn,
max(dept_02_txn1) AS dept_02_txn,
max(dept_03_txn1) AS dept_03_txn,
max(dept_04_txn1) AS dept_04_txn,
max(dept_05_txn1) AS dept_05_txn,
max(dept_01_amt1) AS dept_01_amt,
max(dept_02_amt1) AS dept_02_amt,
max(dept_03_amt1) AS dept_03_amt,
max(dept_04_amt1) AS dept_04_amt,
max(dept_05_amt1) AS dept_05_amt
FROM (SELECT year,month,account_id,media_id,status,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('CR1') , prdatt_value, null),'00') AS CP1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('CR2') , prdatt_value, null),'00') AS CA1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('CR3') , prdatt_value, null),'00') AS CU1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('GENDER') , prdatt_value, null),'00') AS GENDER1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('AGE') , prdatt_value, null),'00') AS AGE1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('AREA') , prdatt_value, null),'00') AS AREA1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('SB1') , prdatt_value, null),'00') AS SB1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('SB2') , prdatt_value, null),'00') AS SSP1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('SB3') , prdatt_value, null),'00') AS SRP,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('SR1') , prdatt_value, null),'00') AS BAL1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('SR2') , prdatt_value, null),'00') AS PTS_RE1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('SR3') , prdatt_value, null),'00') AS PTS_EA1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_01_TXN') , prdatt_value, null),'00') AS dept_01_txn1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_02_TXN') , prdatt_value, null),'00') AS dept_02_txn1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_03_TXN') , prdatt_value, null),'00') AS dept_03_txn1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_04_TXN') , prdatt_value, null),'00') AS dept_04_txn1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_05_TXN'), prdatt_value, null),'00') AS dept_05_txn1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_01_AMT') , prdatt_value, null),'00') AS dept_01_amt1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_02_AMT') , prdatt_value, null),'00') AS dept_02_amt1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_03_AMT') , prdatt_value, null),'00') AS dept_03_amt1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_04_AMT') , prdatt_value, null),'00') AS dept_04_amt1,
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('DEPT_05_AMT') , prdatt_value, null),'00') AS dept_05_amt1
FROM (
select year, month, account_id, media_id,prdatt_id, prdatt_iid, prdatt_value , status
from ac_prd_tab_01
union all
select year, month, account_id, media_id,prdatt_id, prdatt_iid, prdatt_value , status
from ac_prd_tab_02
union all
select year, month, account_id, media_id,prdatt_id, prdatt_iid, prdatt_value , status
from ac_prd_tab_03
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_04 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_05 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_06 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_07 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_08 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_09 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_10 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_11 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_12 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_13 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_14 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_15 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_16 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_17 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_18 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_19 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_20 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_21 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
union all
select a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
from ac_prd_tab_22 a,
dtl_monthly b
where a.year= b.year and a.month=b.month and a.account_id=b.account_id
)
)
GROUP BY year,month,account_id, media_id,status
/
答案 0 :(得分：1)
除了最大值，你还使用了很多功能。
首先取代
SELECT a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
FROM ac_prd_tab_21 a,
dtl_monthly b
WHERE a.year= b.year AND a.month=b.month AND a.account_id=b.account_id
UNION ALL
SELECT a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
FROM ac_prd_tab_22 a,
dtl_monthly b
WHERE a.year= b.year AND a.month=b.month AND a.account_id=b.account_id
...
我会尝试
SELECT a.year, a.month, a.account_id, b.media_id , a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
FROM (
SELECT a.year, a.month, a.account_id, a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
FROM ac_prd_tab_21 a
UNION ALL
SELECT a.year, a.month, a.account_id, a.prdatt_id, a.prdatt_iid, a.prdatt_value , a.status
FROM ac_prd_tab_22 a
)
INNER JOIN dtl_monthly b
ON a.year= b.year AND a.month=b.month AND a.account_id=b.account_id
第二件事，我将尝试在多个步骤中拆分查询，这些步骤可以填充实际表格，也许是在一个过程中。
第三件事，如果您使用某个程序来计算每次util_pkg.fnc_get_Value()的值将它们放入某些变量（如vCR1 := util_pkg.fnc_get_Value('CR1')）时，那么：
nvl(decode(prdatt_id,util_pkg.fnc_get_Value('CR1') , prdatt_value, null),'00')
将成为这个：
nvl(decode(prdatt_id, vCR1, prdatt_value, null),'00')
额外的小事
(decode(prdatt_id, vCR1, nvl(prdatt_value, '00'), '00')
这应该足以开始了。