如何包含CASE IF THEN语句SQL

Question

我想在下面的存储过程中创建一个case语句。我想@OHDept做到以下几点：

如果系= 15，则表明16

一切我已经试过给了我某种错误，如“规定的非布尔类型的表达式在

了条件，预计，不久的“其他人”的较量。我知道我做错了什么，但我不知道。有没有人能帮助我吗？ 谢谢！

(@JCCo bCompany, @BeginContract bContract ='', @EndContract bContract= 'zzzzzzzzz', @ThroughMth bDate,@BegMth bDate,@BegDept bDept='', @EndDept bDept='zzzzzzzzzz', @Status char(1)='A', @BegMthClosed bDate, @EndMthClosed bDate) 

With Recompile 
as 
set nocount on 

declare @OHDept varchar(2) 


declare @CT1Desc varchar(5), @CT2Desc varchar(5), @CT3Desc varchar(5), 
@CT4Desc varchar(5), @CT5Desc varchar(5), @CT6Desc varchar(5), 
@CT7Desc varchar(5), @CT8Desc varchar(5), @CT9Desc varchar(5) 

select @CT1Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=1 
select @CT2Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=2 
select @CT3Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=3 
select @CT4Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=4 
select @CT5Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=5 
select @CT6Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=6 
select @CT7Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=7 
select @CT8Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=99 
select @CT9Desc=JCCT.Abbreviation 
from HQCO 
join JCCT WITH (NOLOCK) on HQCO.PhaseGroup=JCCT.PhaseGroup 
Where HQCO.HQCo=@JCCo and JCCT.CostType=9 
set nocount off; 


With Contracts (JCCo, Contract) 
as (select JCCo, 
Contract 
From JCCM 
Where JCCo = @JCCo 
and ( 
    ------------------------ 
    /*Open*/ 
    case @Status 
    when 'O' then ContractStatus 
    end = 1 
    or /*Open*/ 
    case @Status 
    when 'O' then ContractStatus 
    end = 2 
    and MonthClosed > @ThroughMth 
    or /*Open*/ 
    case @Status 
    when 'O' then ContractStatus 
    end = 3 
    and MonthClosed > @ThroughMth 
    ------------------------ 
    or /*Soft-Closed/Open*/ 
    case @Status 
    when 'S' then ContractStatus 
    end = 2 
    and MonthClosed <= @ThroughMth 
    or /*Soft-Closed/Open*/ 
    case @Status 
    when 'S' then ContractStatus 
    end = 1 
    or /*Soft-Closed/Open*/ 
    case @Status 
    when 'S' then ContractStatus 
    end = 2 
    and MonthClosed > @ThroughMth 
    or /*Soft-Closed/Open*/ 
    case @Status 
    when 'S' then ContractStatus 
    end = 3 
    and MonthClosed > @ThroughMth 
    ------------------------ 
    or /*Hard-Closed*/ 
    case @Status 
    when 'C' then ContractStatus 
    end = 3 
    and MonthClosed between @BegMthClosed and @EndMthClosed 
    ------------------------ 
    or 
    case @Status 
    when 'A' then ContractStatus 
    end <> 0) 
) --End CTE 


Select 'CT1Desc'=@CT1Desc, 'CT2Desc'=@CT2Desc, 'CT3Desc'=@CT3Desc,'CT4Desc'=@CT4Desc, 
'CT5Desc'=@CT5Desc,'CT6Desc'= @CT6Desc, 'CT7Desc'=@CT7Desc, 'CT8Desc'=@CT8Desc,'CT9Desc'=@CT9Desc, 

ProjectMngrID=JCJMPM.ProjectMgr, --3/11/16 CJO 
PrjDept=JCCM.Department, ---3/11/16 CJO 
PrjVP=JCCM.udProjectManager, --3/25/16 CJO 

JCCM.JCCo, JCCM.Contract, ContDesc=JCCM.Description, JCCM.ContractStatus, 
JCCI.Department, DeptDesc = JCDM.Description, 
JCIP.BilledAmt, 
JCIP.ReceivedAmt,ActualCost,ACost1,ACost2,ACost3,ACost4,ACost5,ACost6,ACost7,ACost8,ACost9, 
ProjCloseDate=JCCM.ProjCloseDate, 
StartMonth=JCCM.StartMonth,---7/5/02 AA 
MonthClosed=JCCM.MonthClosed,---7/5/02 AA 
ContractDays=JCCM.CurrentDays, 
JobItem=JCJMPM.Job, 
CoName=HQCO.Name, 
BeginContract=@BeginContract, 
EndContract=@EndContract, 
ThroughMth=@ThroughMth, 
BegMth=@BegMth/*, JCCM.Notes*/ 

FROM JCCI WITH (NOLOCK) 
JOIN JCCM WITH (NOLOCK) on JCCM.JCCo=JCCI.JCCo AND JCCM.Contract=JCCI.Contract 
JOIN Contracts on JCCM.JCCo=Contracts.JCCo AND JCCM.Contract = Contracts.Contract /**CTE with Contracts filtered by Status**/ 
JOIN JCDM WITH (NoLock) on JCDM.JCCo=JCCI.JCCo AND JCDM.Department = JCCI.Department 
JOIN HQCO WITH (NOLOCK) on HQCO.HQCo=JCCI.JCCo 

--- Project Management ID Info 
LEFT JOIN JCJMPM WITH (NOLOCK) ON JCCI.BillGroup =JCJMPM.Job AND JCCI.JCCo = JCJMPM.JCCo --Pull project ID info into report CJO. 

--- Revenue  
left join (select JCCo, Contract, Item, BilledAmt=sum(JCIP.BilledAmt),ReceivedAmt=sum(JCIP.ReceivedAmt) 
from JCIP 
where JCIP.Mth>=@BegMth and JCIP.Mth<=@ThroughMth 
and (JCIP.ContractAmt<>0 or JCIP.BilledAmt<>0 or JCIP.ReceivedAmt<>0) 
group by JCCo, Contract, Item) 
as JCIP on JCIP.JCCo=JCCI.JCCo and JCIP.Contract=JCCI.Contract and JCIP.Item=JCCI.Item 

-- Cost 
left join (select JCJP.JCCo, JCJP.Contract, JCJP.Item, 
ACost1=sum(case when CostType=1 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ACost2=sum(case when CostType=2 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ACost3=sum(case when CostType=3 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ACost4=sum(case when CostType=4 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ACost5=sum(case when CostType=5 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ACost6=sum(case when CostType=6 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ACost7=sum(case when CostType=7 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ACost8=sum(case when CostType=99 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ACost9=sum(case when (CostType>7 and CostType <99) and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end), 
ActualCost=sum(case when JCCP.Mth>=@BegMth then ActualCost else 0 end) - sum(case when CostType=99 and JCCP.Mth>=@BegMth then JCCP.ActualCost else 0 end) 
from JCCP 
join JCJP WITH (NOLOCK) on JCJP.JCCo=JCCP.JCCo and JCJP.Job=JCCP.Job and JCJP.PhaseGroup=JCCP.PhaseGroup 
and JCJP.Phase=JCCP.Phase 
where JCCP.Mth>=@BegMth and JCCP.Mth<=@ThroughMth 
and JCJP.JCCo=@JCCo and JCJP.Contract>=@BeginContract and JCJP.Contract<=@EndContract 
group by JCJP.JCCo, JCJP.Contract, JCJP.Item) 
as JCCP on JCCP.JCCo=JCCI.JCCo and JCCP.Contract=JCCI.Contract and JCCP.Item=JCCI.Item 

where JCCI.JCCo=@JCCo and JCCI.Contract>=@BeginContract and JCCI.Contract<=@EndContract 
and JCCI.Department=@OHDept 

case where @OHDept="15" then "16 else 0 

order by JCCI.JCCo, JCCI.Department, JCCI.Contract 

Answer 1

我没有看到您的发布代码在哪里@OHDept被赋予任何值。

无论它被分配一个值，你可以按照这种说法像这样的东西：

set @OHDept = case when @OHDept = '15' then '16' else @OHDept end; 

Answer 2

你似乎是试图以类似于你在与if做什么方式使用case程序语言。在SQL中，case是在流程中评估为值而不是分支的表达式。

，其将15到16留下其他不变的值的表达式是：

case where @OHDept = '15' then '16' else @OhDept end 

听起来好像是表达select子句中属于既然你提到显示它。

我也认为布尔逻辑正在让你失望。通过这种方式，您可以轻松地简化查询顶部的大量内容。由于and的优先级高于or，所以您不需要使用括号。

(
    @Status in ('O', 'S') and ContractStatus in (1, 2, 3)) 
    and MonthClosed > @ThroughMth 
) 
or 
(
    @Status = 'C' and ContractStatus = 3 
    and MonthClosed between @BegMthClosed and @EndMthClosed 
) 
or 
(
    @Status = 'A' and ContractStatus <> 0 
)