如何在where子句中使用多個條件？

我是SQL Server的新手。我正在使用SQL Server 2008 R2。我創建了兩個表叫adding_hanger和allot如下如何在where子句中使用多個條件？

CREATE TABLE [dbo].[adding_hanger] 
(
    [End_Id] [bigint] IDENTITY(1,1) NOT NULL, 
    [Hanger_Location] [char](10) NOT NULL, 
    [Hanger_Capacity] [int] NOT NULL, 
    [Hanger_Id] AS ((CONVERT([varchar](100),substring([Hanger_Location],(1),(3)),0)+'101')+CONVERT([varchar](100),[End_Id],0)) PERSISTED NOT NULL, 
    [Manager_Name] [varchar](15) NOT NULL, 
    [Manager_Id] AS ((CONVERT([varchar](4),substring([Social_Security_No],(8),(4)),0)+'31')+CONVERT([varchar](100),[End_Id],0)) PERSISTED NOT NULL, 
    [Manager_Password] AS ((CONVERT([varchar](3),substring([Manager_Name],(1),(3)),0)+'@')+CONVERT([varchar](3),substring([Hanger_Location],(1),(3)),0)), 
    [Social_Security_No] [varchar](15) NOT NULL, 
    [Date_of_Birth] [datetime] NOT NULL, 
    [Gender] [varchar](8) NOT NULL, 
    [Mobile_No] [varchar](50) NOT NULL, 
    [Email_Address] [varchar](30) NOT NULL, 
    [House_No] [varchar](10) NOT NULL, 
    [Address_Line_1] [varchar](30) NOT NULL, 
    [Address_id] AS ((CONVERT([varchar](100),substring([City],(1),(3)),0)+'31')+CONVERT([varchar](100),[End_Id],0)) PERSISTED NOT NULL, 
    [City] [char](15) NOT NULL, 
    [State] [char](15) NOT NULL, 
    [Country] [char](15) NOT NULL, 
    [Pin_No] [int] NOT NULL 
) 

CREATE TABLE [dbo].[allot] 
(
    [Fromdate] [datetime] NULL, 
    [todate] [datetime] NULL, 
    [hangarlocation] [char](10) NULL, 
    [hangarno] [varchar](100) NULL, 
    [planeid] [varchar](100) NULL 
)

如何抓未給定範圍內分配的從並作爲輸入的日期，也沒有超過容量可用衣架的詳細信息衣架是否已分配？

來源

2016-07-31 BabyboBNukes

吊架容量是如何計算的？ – TheGameiswar

@TheGameiswar。 adding_hanger中的每一列都將通過Web窗體用戶界面作爲輸入 – BabyboBNukes

SELECT ah.* from [adding_hanger] AS ah 
INNER JOIN [allot] ON allot.hangarlocation = ah.Hanger_Location 
WHERE (allot.Fromdate < <input_from_date> OR allot.todate > <input_to_date>) 
OR (allot.Fromdate >= <input_from_date> AND allot.todate <= <input_to_date> AND ah.Hanger_Capacity <= <input_capacity>)

來源

2016-07-31 11:54:56

首先，您的'機庫'拼寫不一致，應予以解決。

我假設機庫容量代表您可以在該機庫中存儲多少分配量？如果是這樣，機庫的容量可能會在給定的時間內發生變化，因爲增加/刪除配額（根據FromDate和ToDate），所以您的問題不清楚。如果你想要一個在給定時期內無空間的飛機庫，我會使用：

declare @from_date datetime, @end_date datetime, @i int 

-- Set your start and end dates (replace the dates below with the correct ones) 
set @from_date = '2016-07-01' 
set @to_date = '2016-07-31' 
set @i = 1 -- counter 

-- Create a table of dates 
select @from_date as date into #dates 
while dateadd(day,@i,@from_date) <= @to_date 
begin 
    insert into #dates values (dateadd(day,@i,@from_date)) 
end 

-- Create table of date, hangar_id, hangar_capacity 
select date, hangar_id, hangar_capacity 
into #dates_by_hangar 
from adding_hangar 
inner join #dates on 1 = 1 

-- Table showing hangars with at least one free space on every date in the range 
select hangar_id from (
    -- 2. Table showing hangar space free on each date 
    select a.*, a.hanger_capacity - isnull(b.allots_in_hangar,0) as hangar_space_free 
    from #dates_by_hangar a 
    left outer join (
    -- 1. Table showing number of allots in each hangar on a given date 
    select date, hangar_no, sum(case when b.hangar_no is not null then 1 else 0 end) as allots_in_hangar 
    from #dates a 
    left outer join allot b 
    on a.date between b.fromdate and b.todate 
    group by date, hangar_no) b 
    on a.hangar_id = b.hangar_no 
    and a.date = b.date 
) 
group by hangar_no 
having max(hangar_space_free) >= 1

來源

2016-07-31 13:48:56

如何在where子句中使用多個條件？

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