Two Parts on finding specific records

Question

0.00/5 (No votes)

See more:

Hell All

How do I use SQL to find out a couple of things?

Here's my basic table

Date    	Tom
09-Mar-14	1
10-Mar-14	1
11-Mar-14	1
12-Mar-14	0
13-Mar-14	0
14-Mar-14	1
15-Mar-14	0
16-Mar-14	1
17-Mar-14	1
18-Mar-14	1
19-Mar-14	0
20-Mar-14	1
21-Mar-14	1
22-Mar-14	1
23-Mar-14	0
24-Mar-14	1
25-Mar-14	
26-Mar-14	
27-Mar-14	
28-Mar-14	
29-Mar-14	
30-Mar-14	
31-Mar-14	
01-Apr-14	
02-Apr-14	
03-Apr-14	
04-Apr-14	
05-Apr-14

We have GETDATE() returning todays date 24-Mar-14.
1 represents a work day
0 represents an off day

Right now I have two questions.

1. Is there a way using GETDATE() and count the number of days off, so counting the 0's backwards as a variable. Let's use 4 days. So that it counts 4 zeros from GETDATE() which would return 13-Mar-14.

2. Then I want to use another variable of adding 10 working days whether worked or not from the GETDATE() - 4(0s) (13-Mar-14). So from 13-Mar-14 adding 10 days into the future of actually worked days and potential working days would be 26-Mar-14. There must also be a way to use specific dates instead of always using GETDATE().

I know it's a bit of an odd thing but I'm doing some auditing on time worked and future potential working days. The funny thing is that there are so many rules to working days that I'm hoping that if I can figure this out with some help I'll be able to modify it to figure other problems.

Anyways, any help would be much appreciated.

Thanks

Mike

Posted 24-Mar-14 16:33pm

mzrax

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Peter Leow · Answer 1 · 2014-03-24T19:08:00

This is for question 1, use single CTE:

SQL

WITH CTE1 (row, date, tom)
AS
(
    SELECT ROW_NUMBER() OVER(ORDER BY date DESC) AS row,
        date, tom FROM table1 WHERE tom = 0 AND date < '24-Mar-2014'
)
SELECT date FROM CTE1 WHERE row = 4

and question 2, need multiple CTEs:

SQL

WITH CTE0 (row, date, tom)
AS
(
    SELECT ROW_NUMBER() OVER(ORDER BY date DESC) AS row,
        date, tom FROM table1 WHERE tom = 0 AND date < '24-Mar-14'
),
CTE1 (date, tom)
AS
(
    SELECT date, tom FROM table1 WHERE tom = 1 OR tom IS NULL
),
CTE2 (var)
AS
(
     SELECT TOP 10 CTE1.date FROM CTE1 WHERE
      CTE1.date > (SELECT date FROM CTE0 WHERE row = 4)  ORDER BY date ASC
) SELECT MAX(var) FROM CTE2