从日期范围插入多行答案

【问题标题】：Insert multiple rows from a date range从日期范围插入多行
【发布时间】：2022-01-21 07:31:38
【问题描述】：

我想为一个日期范围内的每个日期插入多行

我有一张桌子

CREATE TABLE [dbo].[Booked] (
    [BookedId] [bigint] IDENTITY (1, 1) NOT NULL,
    [BookedFor] [nvarchar] (50) NOT NULL,
    [BookedWhen] [smalldatetime] NOT NULL,
    [DeskName] [varchar] (10) NOT NULL
) ON [PRIMARY]

从单个语句中，我想在 6 行以下的情况下插入多行，每个日期从以下信息中插入一个

Declare
  @StartDate smalldatetime = '2022-01-01'
, @EndDate   smalldatetime = '2022-01-06'
, @BookedFor nvarchar(50)  = 'Mr Smith'
, @DeskName  varchar(10)   = '3'

让行看起来像

BookedId	BookedFor	BookedWhen	DeskName
1	Mr Smith	2022-01-01	3
2	Mr Smith	2022-01-02	3
3	Mr Smith	2022-01-03	3
4	Mr Smith	2022-01-04	3
5	Mr Smith	2022-01-05	3
6	Mr Smith	2022-01-01	3

任何指针？

【问题讨论】：

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标签： sql sql-server

【解决方案1】：

CREATE TABLE [#Booked] (
    [BookedId] [bigint] IDENTITY (1, 1) NOT NULL,
    [BookedFor] [nvarchar] (50) NOT NULL,
    [BookedWhen] [smalldatetime] NOT NULL,
    [DeskName] [varchar] (10) NOT NULL
)


Declare
  @StartDate smalldatetime = '2022-01-01'
, @EndDate   smalldatetime = '2022-01-06'
, @BookedFor nvarchar(50)  = 'Mr Smith'
, @DeskName  varchar(10)   = '3'


;WITH Dates(day) AS 
(
    SELECT CAST(@StartDate as Date) as day
    UNION ALL
    SELECT CAST(DATEADD(day, 1, day) as Date) as day
    FROM Dates
    WHERE CAST(DATEADD(day, 1, day) as Date) < @EndDate
)
INSERT INTO #Booked 
SELECT @BookedFor, [day], @DeskName FROM dates;

SELECT * FROM #Booked

Create days between two dates

【讨论】：