我正在尝试在 Teradata SQL Assistant 中生成以下查询。不幸的是，我遇到了假脱机空间错误。关于如何使用更少的资源执行此查询的任何提示？
SELECT TOP 10
A.USER_ID,
C.SUPER_NM_LVL2,
C.SUPER_NM_LVL1,
DIR.SUPER_NM_LVL2,
A.ACTIVITY_DT,
B.MTN,
A.ACCT_NUM,
A.PPLAN_CD_CURR
FROM DLY_LINE_ACTIVITY_PPLAN_V AS A
INNER JOIN
CUST_ACCT_LINE_V AS B
ON A.ACCT_NUM=B.ACCT_NUM
INNER JOIN
HR_EMPLOYEE_V AS C
ON A.USER_ID=C.NT_USER_ID
INNER JOIN
HR_EMPLOYEE_V AS DIR
ON C.SUPER_ID_LVL2_EMP_ID=DIR.EMP_ID
WHERE
A.ACTIVITY_DT >= '2012-11-01'
AND A.ACTIVITY_DT <= '2012-11-19'
AND C.EMP_AREA_CD = 'WE'
AND A.PPLAN_CD_CURR IN ('86489', '86491', '86492',
'86494', '86495', '86496', '86497', '86498', '86499', '86500', '86501',
'86502', '86487', '86489', '86504', '86505', '86506', '86507', '86508',
'86509', '86510', '86511', '86512')
GROUP BY
A.USER_ID,
C.SUPER_NM_LVL2,
C.SUPER_NM_LVL1,
DIR.SUPER_NM_LVL2,
A.ACTIVITY_DT,
B.MTN,
A.ACCT_NUM,
A.PPLAN_CD_CURR
编辑：这是解释语句。
Explanation
1) First, we lock UDM_PRDSTG_SECTBLS.MASKING_PROD_NM_XREF in view
NTL_PRD_ALLVM.CUST_ACCT_LINE_V for access, we lock
UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V for access, we lock
UDM_PRD_TBLS.CUST_ACCT_LINE in view NTL_PRD_ALLVM.CUST_ACCT_LINE_V
for access, and we lock UDM_PRD_TBLS.HR_EMPLOYEE in view
NTL_PRD_ALLVM.HR_EMPLOYEE_V for access.
2) Next, we execute the following steps in parallel.
1) We do an all-AMPs RETRIEVE step from a single partition of
UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V with a condition of (
"(NOT (UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.ACCT_NUM IS NULL ))
AND ((NOT (UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.USER_ID IS NULL ))
AND ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.ACTIVITY_DT <= DATE
'2012-11-19') AND ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in
view NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.ACTIVITY_DT >=
DATE '2012-11-01') AND ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN
in view NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR
= '86489') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86487') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86491') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86492') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86494') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86495') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86496') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86497') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86498') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86499') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86500') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86501') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86502') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86504') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86505') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86506') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86507') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86508') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86509') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86510') OR ((UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86511') OR (UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN in view
NTL_PRD_ALLVM.DLY_LINE_ACTIVITY_PPLAN_V.PPLAN_CD_CURR =
'86512')))))))))))))))))))))))))") into Spool 9 (all_amps)
(compressed columns allowed), which is built locally on the
AMPs. The size of Spool 9 is estimated with low confidence
to be 2,908,683 rows (119,256,003 bytes). The estimated time
for this step is 0.02 seconds.
2) We do an all-AMPs RETRIEVE step from UDM_PRD_TBLS.HR_EMPLOYEE
in view NTL_PRD_ALLVM.HR_EMPLOYEE_V by way of an all-rows
scan with a condition of ("(NOT (UDM_PRD_TBLS.HR_EMPLOYEE in
view NTL_PRD_ALLVM.HR_EMPLOYEE_V.NT_USER_ID IS NULL )) AND
((NOT (UDM_PRD_TBLS.HR_EMPLOYEE in view
NTL_PRD_ALLVM.HR_EMPLOYEE_V.SUPER_ID_LVL2_EMP_ID IS NULL ))
AND (UDM_PRD_TBLS.HR_EMPLOYEE in view
NTL_PRD_ALLVM.HR_EMPLOYEE_V.EMP_AREA_CD = 'WE'))") into Spool
10 (all_amps) (compressed columns allowed), which is
duplicated on all AMPs. The size of Spool 10 is estimated
with low confidence to be 31,938,444 rows (2,012,121,972
bytes). The estimated time for this step is 0.67 seconds.
3) We do an all-AMPs RETRIEVE step from UDM_PRD_TBLS.A in view
NTL_PRD_ALLVM.CUST_ACCT_LINE_V by way of an all-rows scan
with a condition of ("(( CASE WHEN (NOT (UDM_PRD_TBLS.A in
view NTL_PRD_ALLVM.CUST_ACCT_LINE_V.CUST_ASSOC_ID IS NULL ))
THEN (UDM_PRD_TBLS.A in view
NTL_PRD_ALLVM.CUST_ACCT_LINE_V.CUST_ASSOC_ID) ELSE (' ') END
))<> '12'") into Spool 11 (all_amps) (compressed columns
allowed) fanned out into 14 hash join partitions, which is
built locally on the AMPs. The size of Spool 11 is estimated
with no confidence to be 186,602,214 rows (5,784,668,634
bytes). The estimated time for this step is 2.27 seconds.
3) We do an all-AMPs JOIN step from Spool 9 (Last Use) by way of an
all-rows scan, which is joined to Spool 10 (Last Use) by way of an
all-rows scan. Spool 9 and Spool 10 are joined using a single
partition hash join, with a join condition of ("USER_ID =
NT_USER_ID"). The result goes into Spool 12 (all_amps)
(compressed columns allowed), which is duplicated on all AMPs into
14 hash join partitions. The size of Spool 12 is estimated with
low confidence to be 360,568,332 rows (30,648,308,220 bytes). The
estimated time for this step is 8.09 seconds.
4) We do an all-AMPs JOIN step from Spool 11 (Last Use) by way of an
all-rows scan, which is joined to Spool 12 (Last Use) by way of an
all-rows scan. Spool 11 and Spool 12 are joined using a hash join
of 14 partitions, with a join condition of ("ACCT_NUM = ACCT_NUM").
The result goes into Spool 13 (all_amps) (compressed columns
allowed), which is redistributed by the hash code of (
UDM_PRD_TBLS.HR_EMPLOYEE.SUPER_ID_LVL2_EMP_ID) to all AMPs. The
size of Spool 13 is estimated with no confidence to be 8,247,457
rows (783,508,415 bytes). The estimated time for this step is
1.01 seconds.
5) We do an all-AMPs JOIN step from UDM_PRD_TBLS.HR_EMPLOYEE in view
NTL_PRD_ALLVM.HR_EMPLOYEE_V by way of an all-rows scan with no
residual conditions, which is joined to Spool 13 (Last Use) by way
of an all-rows scan. UDM_PRD_TBLS.HR_EMPLOYEE and Spool 13 are
joined using a single partition hash join, with a join condition
of ("SUPER_ID_LVL2_EMP_ID = UDM_PRD_TBLS.HR_EMPLOYEE.EMP_ID").
The result goes into Spool 8 (all_amps) (compressed columns
allowed), which is built locally on the AMPs. The size of Spool 8
is estimated with no confidence to be 8,247,457 rows (882,477,899
bytes). The estimated time for this step is 0.06 seconds.
6) We do an all-AMPs SUM step to aggregate from Spool 8 (Last Use) by
way of an all-rows scan , grouping by field1 (
UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN.USER_ID
,UDM_PRD_TBLS.HR_EMPLOYEE.SUPER_NM_LVL2
,UDM_PRD_TBLS.HR_EMPLOYEE.SUPER_NM_LVL1
,UDM_PRD_TBLS.HR_EMPLOYEE.SUPER_NM_LVL2
,UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN.ACTIVITY_DT
,UDM_PRD_TBLS.A.MTN ,UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN.ACCT_NUM
,UDM_PRD_TBLS.DLY_LINE_ACTIVITY_PPLAN.PPLAN_CD_CURR). Aggregate
Intermediate Results are computed globally, then placed in Spool
14. The size of Spool 14 is estimated with no confidence to be
8,247,455 rows (2,762,897,425 bytes). The estimated time for this
step is 0.76 seconds.
7) We do an all-AMPs STAT FUNCTION step from Spool 14 by way of an
all-rows scan into Spool 18, which is redistributed by hash code
to all AMPs. The result rows are put into Spool 5 (all_amps),
which is built locally on the AMPs. This step is used to retrieve
the TOP 10 rows. Load distribution optimization is used.
If this step retrieves less than 10 rows, then execute step 8.
The size is estimated with no confidence to be 10 rows (1,130
bytes).
8) We do an all-AMPs STAT FUNCTION step from Spool 14 (Last Use) by
way of an all-rows scan into Spool 18 (Last Use), which is
redistributed by hash code to all AMPs. The result rows are put
into Spool 5 (all_amps), which is built locally on the AMPs. This
step is used to retrieve the TOP 10 rows. The size is estimated
with no confidence to be 10 rows (1,130 bytes).
9) Finally, we send out an END TRANSACTION step to all AMPs involved
in processing the request.
-> The contents of Spool 5 are sent back to the user as the result of
statement 1.