Formatage de date/heure personnalisé dans SQL Server

Utilisez DATENAME et encapsulez la logique dans une fonction, pas dans une procédure stockée

declare @myTime as DateTime

set @myTime = GETDATE()

select @myTime

select DATENAME(day, @myTime) + SUBSTRING(UPPER(DATENAME(month, @myTime)), 0,4)

Renvoie "14OCT"

Essayez de ne pas utiliser d'opérations basées sur des caractères/chaînes si possible lorsque vous travaillez avec des dates. Ils sont numériques (un flottant) et les performances souffriront de ces conversions de type de données.

Creusez ces conversions pratiques que j'ai compilées au fil des ans...

/* Common date functions */
--//This contains common date functions for MSSQL server

/*Getting Parts of a DateTime*/
    --//gets the date only, 20x faster than using Convert/Cast to varchar
    --//this has been especially useful for JOINS
    SELECT (CAST(FLOOR(CAST(GETDATE() as FLOAT)) AS DateTime))

    --//gets the time only (date portion is '1900-01-01' and is considered the "0 time" of dates in MSSQL, even with the datatype min value of 01/01/1753. 
    SELECT (GETDATE() - (CAST(FLOOR(CAST(GETDATE() as FLOAT)) AS DateTime)))


/*Relative Dates*/
--//These are all functions that will calculate a date relative to the current date and time
    /*Current Day*/
    --//now
    SELECT (GETDATE())

    --//midnight of today
    SELECT (DATEADD(ms,-4,(DATEADD(dd,DATEDIFF(dd,0,GETDATE()) + 1,0))))

    --//Current Hour
    SELECT DATEADD(hh,DATEPART(hh,GETDATE()),CAST(FLOOR(CAST(GETDATE() AS FLOAT)) as DateTime))

    --//Current Half-Hour - if its 9:36, this will show 9:30
    SELECT DATEADD(mi,((DATEDIFF(mi,(CAST(FLOOR(CAST(GETDATE() as FLOAT)) as DateTime)), GETDATE())) / 30) * 30,(CAST(FLOOR(CAST(GETDATE() as FLOAT)) as DateTime)))

    /*Yearly*/
    --//first datetime of the current year
    SELECT (DATEADD(yy,DATEDIFF(yy,0,GETDATE()),0))

    --//last datetime of the current year
    SELECT (DATEADD(ms,-4,(DATEADD(yy,DATEDIFF(yy,0,GETDATE()) + 1,0))))

    /*Monthly*/
    --//first datetime of current month
    SELECT (DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0))

    --//last datetime of the current month
    SELECT (DATEADD(ms,-4,DATEADD(mm,1,DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0))))

    --//first datetime of the previous month
    SELECT (DATEADD(mm,DATEDIFF(mm,0,GETDATE()) -1,0))

    --//last datetime of the previous month
    SELECT (DATEADD(ms, -4,DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0)))

    /*Weekly*/
    --//previous monday at 12AM
    SELECT (DATEADD(wk,DATEDIFF(wk,0,GETDATE()) -1 ,0))

    --//previous friday at 11:59:59 PM
    SELECT (DATEADD(ms,-4,DATEADD(dd,5,DATEADD(wk,DATEDIFF(wk,0,GETDATE()) -1 ,0))))

    /*Quarterly*/
    --//first datetime of current quarter
    SELECT (DATEADD(qq,DATEDIFF(qq,0,GETDATE()),0))

    --//last datetime of current quarter
    SELECT (DATEADD(ms,-4,DATEADD(qq,DATEDIFF(qq,0,GETDATE()) + 1,0)))