Sql 选择没有大于X的值的位置
我当前正在运行此查询:Sql 选择没有大于X的值的位置,sql,Sql,我当前正在运行此查询: SELECT DISTINCT f.FormName FROM PatientTask as pt INNER JOIN ClinicTask ct ON pt.fTaskKey = ct.fTaskKey INNER JOIN Form f ON ct.fFormKey = f.FormKey WHERE pt.TaskTargetDate <= CONVERT(datetime
SELECT DISTINCT f.FormName
FROM PatientTask as pt
INNER JOIN ClinicTask ct
ON pt.fTaskKey = ct.fTaskKey
INNER JOIN Form f
ON ct.fFormKey = f.FormKey
WHERE pt.TaskTargetDate <= CONVERT(datetime, '2012-01-01');
选择不同的f.FormName
从PatientTask作为pt
内连接任务ct
在pt.fTaskKey=ct.fTaskKey上
内连接形式f
在ct.fFormKey=f.FormKey上
其中,pt.TaskTargetDateA不在
中应给出以下结果:
Select DISTINCT f.FormName
FROM Form f
WHERE f.FormKey NOT IN
(
SELECT ct.fFormKey
From PatientTask as pt
Inner Join ClinicTask ct on pt.fTaskKey = ct.fTaskKey
WHERE pt.TaskTargetDate >= CONVERT(datetime, '2012-01-01')
)
此外,转换
也不是必需的-SQL将自动将'2012-01-01'
解析为日期,因为它将与日期值进行比较a不在
中,应给出以下结果:
Select DISTINCT f.FormName
FROM Form f
WHERE f.FormKey NOT IN
(
SELECT ct.fFormKey
From PatientTask as pt
Inner Join ClinicTask ct on pt.fTaskKey = ct.fTaskKey
WHERE pt.TaskTargetDate >= CONVERT(datetime, '2012-01-01')
)
此外,转换
也不是必需的-SQL将自动将'2012-01-01'
解析为日期,因为它将与日期值进行比较a不在
中,应给出以下结果:
Select DISTINCT f.FormName
FROM Form f
WHERE f.FormKey NOT IN
(
SELECT ct.fFormKey
From PatientTask as pt
Inner Join ClinicTask ct on pt.fTaskKey = ct.fTaskKey
WHERE pt.TaskTargetDate >= CONVERT(datetime, '2012-01-01')
)
此外,转换
也不是必需的-SQL将自动将'2012-01-01'
解析为日期,因为它将与日期值进行比较a不在
中,应给出以下结果:
Select DISTINCT f.FormName
FROM Form f
WHERE f.FormKey NOT IN
(
SELECT ct.fFormKey
From PatientTask as pt
Inner Join ClinicTask ct on pt.fTaskKey = ct.fTaskKey
WHERE pt.TaskTargetDate >= CONVERT(datetime, '2012-01-01')
)
此外,转换
也不是必需的-SQL将自动将'2012-01-01'
解析为日期,因为它将与日期值进行比较您可以使用左外联接:
Select
DISTINCT f.FormName, pt.fTaskKey
From
Form f left outer join ClinicTask ct
on ct.fFormKey = f.FormKey
Inner Join
(
select fTaskKey
from PatientTask
WHERE pt.TaskTargetDate >= CONVERT(datetime, '2012-01-01')
) pt
on pt.fTaskKey = ct.fTaskKey
where ct.fFormKey is null
可以使用左外连接:
Select
DISTINCT f.FormName, pt.fTaskKey
From
Form f left outer join ClinicTask ct
on ct.fFormKey = f.FormKey
Inner Join
(
select fTaskKey
from PatientTask
WHERE pt.TaskTargetDate >= CONVERT(datetime, '2012-01-01')
) pt
on pt.fTaskKey = ct.fTaskKey
where ct.fFormKey is null
可以使用左外连接:
Select
DISTINCT f.FormName, pt.fTaskKey
From
Form f left outer join ClinicTask ct
on ct.fFormKey = f.FormKey
Inner Join
(
select fTaskKey
from PatientTask
WHERE pt.TaskTargetDate >= CONVERT(datetime, '2012-01-01')
) pt
on pt.fTaskKey = ct.fTaskKey
where ct.fFormKey is null
可以使用左外连接:
Select
DISTINCT f.FormName, pt.fTaskKey
From
Form f left outer join ClinicTask ct
on ct.fFormKey = f.FormKey
Inner Join
(
select fTaskKey
from PatientTask
WHERE pt.TaskTargetDate >= CONVERT(datetime, '2012-01-01')
) pt
on pt.fTaskKey = ct.fTaskKey
where ct.fFormKey is null