我想过滤那些具有action_type且值为'Q'，'R'的员工，或者它可以为null，即没有action_type。我使用了旧的SQL语法，因为这是我公司遵循的方法。
我在查询中也使用了“ Union”，以便在输出中也包含null。但我认为可以有更好，更充分的方法来做到这一点 条件是：
AND ppa.action_type IN ( 'Q', 'R' )
SELECT *
FROM (SELECT DISTINCT papf.person_number,
name.first_name,
name.last_name,
paam.assignment_number,
py.payroll_name,
(SELECT meaning
FROM fnd_lookup_values
WHERE lookup_type LIKE 'ACTION_TYPE'
AND lookup_code = ppa.action_type
AND LANGUAGE = 'US'
AND enabled_flag = 'Y') ACTION_TYPE,
To_char(PPA.effective_date, 'DD-MON-YYYY')
EFFECTIVE_DATE,
ppa.payroll_action_id action_number
,
pcs.consolidation_set_name,
To_char(finc, 'DD-MON-YYYY') FINC,
pasv.user_status
FROM pay_assigned_payrolls_dn papd,
pay_payroll_terms pt,
pay_pay_relationships_dn pr,
pay_all_payrolls_f py,
per_all_people_f papf,
pay_payroll_actions ppa,
pay_consolidation_sets pcs,
per_person_names_f name,
pay_rel_groups_dn payrel,
per_all_assignments_m paam,
pay_payroll_rel_actions PPRA,
per_assignment_status_types_vl pasv,
pay_time_periods ptp,
per_legislative_data_groups_vl ldg
WHERE papd.payroll_term_id = pt.payroll_term_id
AND pt.payroll_relationship_id = pr.payroll_relationship_id
AND papd.payroll_id = py.payroll_id
AND pr.person_id = papf.person_id
AND ppa.payroll_id(+) = py.payroll_id
AND ptp.payroll_id = py.payroll_id
AND PPA.payroll_action_id(+) = PPRA.payroll_action_id
AND PPRA.payroll_relationship_id = pr.payroll_relationship_id
AND pasv.assignment_status_type_id =
paam.assignment_status_type_id
AND paam.assignment_type = 'E'
--ADDED condition---
AND pasv.user_status LIKE '%Payroll Eligible'
AND ( finc > ptp.start_date
OR finc IS NULL )
AND ppa.action_type IN ( 'Q', 'R' )
AND ldg.name = Nvl(:P_LEGISLATIVE_GROUP, ldg.name)
AND pasv.user_status = Nvl(:P_ASSIGNMENT_STATUS,
pasv.user_status)
AND To_char(Nvl(ppa.effective_date, SYSDATE), 'YYYY-MM-DD')
BETWEEN
To_char(Nvl(:p_from_date, SYSDATE), 'YYYY-MM-DD') AND To_char
(
Nvl(:p_TO_date, SYSDATE), 'YYYY-MM-DD')
-------
AND ldg.legislation_code = paam.legislation_code
AND ppa.consolidation_set_id(+) = pcs.consolidation_set_id
AND pcs.consolidation_set_id = py.consolidation_set_id
AND payrel.assignment_id = paam.assignment_id
AND payrel.group_type = 'A'
AND papf.person_id = name.person_id
AND name.name_type = 'GLOBAL'
AND payrel.parent_rel_group_id = papd.payroll_term_id
AND ppa.earn_time_period_id(+) = ptp.time_period_id
AND Nvl(ppa.effective_date, Trunc(SYSDATE)) BETWEEN
payrel.start_date AND payrel.end_date
AND Nvl(ppa.effective_date, Trunc(SYSDATE)) BETWEEN
papd.start_date AND papd.end_date
AND Trunc(SYSDATE) BETWEEN papf.effective_start_date AND
papf.effective_end_date
AND Trunc(SYSDATE) BETWEEN py.effective_start_date AND
py.effective_end_date
AND Trunc(SYSDATE) BETWEEN paam.effective_start_date AND
paam.effective_end_date
AND Trunc(SYSDATE) BETWEEN name.effective_start_date AND
name.effective_end_date
UNION
SELECT DISTINCT papf.person_number,
name.first_name,
name.last_name,
paam.assignment_number,
py.payroll_name,
(SELECT meaning
FROM fnd_lookup_values
WHERE lookup_type LIKE 'ACTION_TYPE'
AND lookup_code = ppa.action_type
AND LANGUAGE = 'US'
AND enabled_flag = 'Y') ACTION_TYPE,
To_char(PPA.effective_date, 'DD-MON-YYYY')
EFFECTIVE_DATE,
ppa.payroll_action_id action_number
,
pcs.consolidation_set_name,
To_char(finc, 'DD-MON-YYYY') FINC,
pasv.user_status
FROM pay_assigned_payrolls_dn papd,
pay_payroll_terms pt,
pay_pay_relationships_dn pr,
pay_all_payrolls_f py,
per_all_people_f papf,
pay_payroll_actions ppa,
pay_consolidation_sets pcs,
per_person_names_f name,
pay_rel_groups_dn payrel,
per_all_assignments_m paam,
pay_payroll_rel_actions PPRA,
per_assignment_status_types_vl pasv,
pay_time_periods ptp,
per_legislative_data_groups_vl ldg
WHERE papd.payroll_term_id = pt.payroll_term_id
AND pt.payroll_relationship_id = pr.payroll_relationship_id
AND papd.payroll_id = py.payroll_id
AND pr.person_id = papf.person_id
AND ppa.payroll_id(+) = py.payroll_id
AND ptp.payroll_id = py.payroll_id
AND PPA.payroll_action_id(+) = PPRA.payroll_action_id
AND PPRA.payroll_relationship_id = pr.payroll_relationship_id
AND pasv.assignment_status_type_id =
paam.assignment_status_type_id
AND paam.assignment_type = 'E'
--ADDED condition---
AND pasv.user_status LIKE '%Payroll Eligible'
AND ( finc > ptp.start_date
OR finc IS NULL )
AND ppa.action_type IS NULL
AND ldg.name = Nvl(:P_LEGISLATIVE_GROUP, ldg.name)
AND pasv.user_status = Nvl(:P_ASSIGNMENT_STATUS,
pasv.user_status)
AND To_char(Nvl(ppa.effective_date, SYSDATE), 'YYYY-MM-DD')
BETWEEN
To_char(Nvl(:p_from_date, SYSDATE), 'YYYY-MM-DD') AND To_char
(
Nvl(:p_TO_date, SYSDATE), 'YYYY-MM-DD')
-------
AND ldg.legislation_code = paam.legislation_code
AND ppa.consolidation_set_id(+) = pcs.consolidation_set_id
AND pcs.consolidation_set_id = py.consolidation_set_id
AND payrel.assignment_id = paam.assignment_id
AND payrel.group_type = 'A'
AND papf.person_id = name.person_id
AND name.name_type = 'GLOBAL'
AND payrel.parent_rel_group_id = papd.payroll_term_id
AND ppa.earn_time_period_id(+) = ptp.time_period_id
AND Nvl(ppa.effective_date, Trunc(SYSDATE)) BETWEEN
payrel.start_date AND payrel.end_date
AND Nvl(ppa.effective_date, Trunc(SYSDATE)) BETWEEN
papd.start_date AND papd.end_date
AND Trunc(SYSDATE) BETWEEN papf.effective_start_date AND
papf.effective_end_date
AND Trunc(SYSDATE) BETWEEN py.effective_start_date AND
py.effective_end_date
AND Trunc(SYSDATE) BETWEEN paam.effective_start_date AND
paam.effective_end_date
AND Trunc(SYSDATE) BETWEEN name.effective_start_date AND
name.effective_end_date)
答案 0 :(得分：3)
有两种方法：
AND (action_type IN ('Q', 'R') OR action_type IS NULL)
或：
AND COALESCE(action_type, 'Q') IN ('Q', 'R')
根据您的具体情况，两者之间的性能可能会有所不同，也可能会有所不同。
答案 1 :(得分：2)
or怎么样？
(ppa.action_type IN ( 'Q', 'R' ) or pa.action_type is null)
答案 2 :(得分：0)
您可以考虑简要地使用Oracle spesific NVL函数（NVL( value1, value2 ) replace value1 with value2 if value1 is null）
NVL( action_type, 'Q') IN ( 'Q', 'R' )
如果action_type也为null，则NVL( action_type, 'Q')与括号内列表中存在的'Q'匹配。