Select weekday MS SQL?

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I have app for workers work time...

I need if is Saturday od Sunday to work with my code

Without

CASE WHEN WEEKDAY(a.vrijemeodjave) in (1,7) then 0 else

CODE WORKING FINE

Statement is Microsoft SQL 2016

What I have tried:

SELECT a.id, a.redni_broj , a.radnik, isnull(convert(varchar(20), a.vrijemeodjave, 113), '') as vrijemeodjave, convert(varchar(20), b.vrijemeprijave, 113) as vrijemeprijave, 
CASE WHEN WEEKDAY(b.vrijemeprijave) in (1,7) then 0 else (CASE WHEN (DATEDIFF(SECOND, b.vrijemeprijave, a.vrijemeodjave) / 3600) > 8 THEN 8 ELSE(DATEDIFF(SECOND, b.vrijemeprijave, a.vrijemeodjave) / 3600) END) end    AS radni_sati, 
CASE WHEN WEEKDAY(a.vrijemeodjave) in (1,7) then 0 else (CASE WHEN(DATEDIFF(SECOND, b.vrijemeprijave, a.vrijemeodjave) / 3600) > 8  THEN(DATEDIFF(SECOND, b.vrijemeprijave, a.vrijemeodjave) / 3600) - 8  ELSE NULL END) end    AS prekovremeni 
FROM(SELECT id, redni_broj, radnik, vrijemeodjave, ROW_Number() OVER(Partition By id ORDER BY vrijemeprijave) as RowNum 
FROM dbo.prijava_radnika) a INNER JOIN(SELECT id, redni_broj, radnik, vrijemeprijave, (ROW_Number() OVER(Partition By id ORDER BY vrijemeprijave) - 1) as RowNumMinusOne FROM dbo.prijava_radnika) b ON a.id = b.id where 1 = 1

Posted 17-Apr-18 7:18am

Goran Bibic

Updated 17-Apr-18 7:55am

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Goran Bibic 17-Apr-18 13:18pm

1 is Sunday, 7 is Saturday...I hope so..

2 solutions

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Wendelius · Accepted Answer · 2018-04-17T07:35:00

Solution 1

Not sure if I understand the question correctly but you can use DATEPART to exctract the weekday number.

For example

SQL

SELECT DATEPART(weekday, GETDATE())

Posted 17-Apr-18 7:35am

Wendelius

Comments

Goran Bibic 17-Apr-18 13:40pm

I need to find Saturday and Sunday

Wendelius 17-Apr-18 13:54pm

The value depends on the DATEFIRST setting you have. You can query it as follows:

SELECT @@DATEFIRST

Depending on the returned value Saturday and Sunday are different values as described in DATEPART (Transact-SQL) | Microsoft Docs[^]

For example I have DATEFIRST as 7 and this weeks Saturday and Sunday for me are 7 and 1 respectively.

Goran Bibic 17-Apr-18 14:05pm

Its work...thank you...I am accept answer

Wendelius 17-Apr-18 14:08pm

You're welcome :)

RickZeeland · Accepted Answer · 2018-04-17T07:56:00

Solution 2

In addition to answer 1, maybe this will make things clearer:

SQL

SELECT
  DATENAME(weekday, a.vrijemeodjave),
  DATEPART(weekday, a.vrijemeodjave)
FROM dbo.prijava_radnika

Also see SQL Fiddle here: SQL Fiddle[^]

Posted 17-Apr-18 7:56am

RickZeeland

Comments

Goran Bibic 17-Apr-18 14:05pm

Thank you