如果我通过以下方式包含该组，以下查询为什么会出现以下错误：
ORA-00937: not a single-group group function
select petf.element_name en,
--tm.i,
--sum(xxpay_util.safe_to_number(prrv.result_value)) s
nvl(max(decode(tm.i, 1, sum(xxpay_util.safe_to_number(prrv.result_value)), null)), 0) e1,
nvl(max(decode(tm.i, 2, sum(xxpay_util.safe_to_number(prrv.result_value)), null)), 0) e2
from (
select rownum i,
sub.*
from (
select trunc(decode(pbg.legislation_code, 'ZA', ptp.pay_advice_date, ptp.regular_payment_date), 'MM') month_date,
min(ptp.start_date) real_month_start,
max(ptp.end_date) real_month_end
from per_business_groups pbg,
per_time_periods ptp
where pbg.business_group_id = :P_BG_ID
and ptp.payroll_id = :PAYROLL_ID
and decode(pbg.legislation_code, 'ZA', ptp.pay_advice_date, trunc(ptp.regular_payment_date, 'MM')) between xxpay_util.get_tax_year(pbg.legislation_code, :P_TAX_YEAR, 'start')
and xxpay_util.get_tax_year(pbg.legislation_code, :P_TAX_YEAR, 'end')
group by trunc(decode(pbg.legislation_code, 'ZA', ptp.pay_advice_date, ptp.regular_payment_date), 'MM')
order by 1
) sub
) tm,
pay_element_classifications pec,
pay_element_types_f petf,
pay_input_values_f pivf,
pay_run_result_values prrv,
pay_run_results prr,
pay_assignment_actions paa,
pay_payroll_actions ppa,
per_time_periods ptp
where instr('|' || :PRIMARY_CLASS_IDS || '|', '|' || to_char(nvl(pec.parent_classification_id, -6969)) || '|') > 0
and
(
petf.classification_id = pec.classification_id
or instr('|' || :PRIMARY_CLASS_IDS || '|', '|' || to_char(nvl(petf.classification_id, -6969)) || '|') > 0
)
and tm.real_month_end between petf.effective_start_date and petf.effective_end_date
and pivf.element_type_id = petf.element_type_id
and pivf.name = 'Pay Value'
and prrv.input_value_id = pivf.input_value_id
and nvl(prrv.result_value, '0') <> '0'
and prr.run_result_id = prrv.run_result_id
and prr.status in ('P', 'PA') -- RUN_RESULT_STATUS lookup
and prr.element_type_id = petf.element_type_id
and paa.assignment_action_id = prr.assignment_action_id
and paa.action_status = 'C'
and paa.assignment_id = :ASSIGNMENT_ID
and ppa.payroll_action_id = paa.payroll_action_id
and ppa.action_status = 'C'
and ppa.action_type in ('B', 'F', 'G', 'I', 'O', 'Q', 'R', 'V', 'L') -- = 'R'
and ptp.time_period_id = ppa.time_period_id
and ptp.start_date >= tm.real_month_start
and ptp.end_date <= tm.real_month_end
group by petf.element_name
-- ,tm.i
:PRIMARY_CLASS_IDS是一个字符串，例如105|107|112|113，列出了主要的分类ID。
答案 0 :(得分：0)
通过将整个查询放在另一个子查询中来修复它：
select sub2.element_name,
max(decode(sub2.i, 11, sub2.result, null)) e11,
max(decode(sub2.i, 12, sub2.result, null)) e12
from (
select petf.element_name,
tm.i,
sum(xxpay_util.safe_to_number(prrv.result_value)) result
from (
select rownum i,
sub.*
from (
select trunc(decode(pbg.legislation_code, 'ZA', ptp.pay_advice_date, ptp.regular_payment_date), 'MM') month_date,
min(ptp.start_date) real_month_start,
max(ptp.end_date) real_month_end
from per_business_groups pbg,
per_time_periods ptp
where pbg.business_group_id = :P_BG_ID
and ptp.payroll_id = :PAYROLL_ID
and decode(pbg.legislation_code, 'ZA', ptp.pay_advice_date, trunc(ptp.regular_payment_date, 'MM')) between xxpay_util.get_tax_year(pbg.legislation_code, :P_TAX_YEAR, 'start')
and xxpay_util.get_tax_year(pbg.legislation_code, :P_TAX_YEAR, 'end')
group by trunc(decode(pbg.legislation_code, 'ZA', ptp.pay_advice_date, ptp.regular_payment_date), 'MM')
order by 1
) sub
) tm,
(
select distinct petf.element_type_id
from pay_element_classifications pec,
pay_element_types_f petf
where instr('|' || :PRIMARY_CLASS_IDS || '|', '|' || to_char(nvl(pec.parent_classification_id, -6969)) || '|') > 0
and
(
petf.classification_id = pec.classification_id
or instr('|' || :PRIMARY_CLASS_IDS || '|', '|' || to_char(nvl(petf.classification_id, -6969)) || '|') > 0
)
) ele,
pay_element_types_f petf,
pay_input_values_f pivf,
pay_run_result_values prrv,
pay_run_results prr,
pay_assignment_actions paa,
pay_payroll_actions ppa
where petf.element_type_id = ele.element_type_id
and tm.real_month_end between petf.effective_start_date and petf.effective_end_date
and pivf.element_type_id = petf.element_type_id
and pivf.name = 'Pay Value'
and prrv.input_value_id = pivf.input_value_id
and nvl(prrv.result_value, '0') <> '0'
and prr.run_result_id = prrv.run_result_id
and prr.status in ('P', 'PA') -- RUN_RESULT_STATUS lookup
and prr.element_type_id = petf.element_type_id
and paa.assignment_action_id = prr.assignment_action_id
and paa.action_status = 'C'
and paa.assignment_id = :ASSIGNMENT_ID
and ppa.payroll_action_id = paa.payroll_action_id
and ppa.action_status = 'C'
and ppa.action_type in ('B', 'F', 'G', 'I', 'O', 'Q', 'R', 'V', 'L') -- = 'R'
and ppa.effective_date between tm.real_month_start and tm.real_month_end
and petf.element_name in ('ZA_Tax_Costing', 'ZA_UIF_Employee_Contribution')
group by petf.element_name,
tm.i
) sub2
group by sub2.element_name