How i used select , max and where where with insert query in sql server

Question

0.00/5 (No votes)

See more:

i have table Like that :- P_id, R_Number, Date_Reservation ,Exame_id , Doctor_id
P_id is FK ---- -------- ---------------- -------- ---------
50 , 1 , 20-2-2016 , 1 , 2
20 , 2 , 20-2-2016 , 1 , 1
60 , 3 , 20-2-2016 , 1 , 3
50 , 1 , 21-2-2016 , 2 , 4
30 , 2 , 21-2-2016 , 2 , 2

this is my insert query to add new P_id :-

SQL

insert into ResrvationData (P_id ,R_Number ,Date_Reservation ,Exame_id , Doctor_id)
values (1 ,(select MAX(R_Number) from ResrvationData where Date_Reservation = '2016-02-22' and Exame_id = 1 ) +1 ,'2016-02-22' ,1 ,1 )

this new P_id become :- 1 , Null , 22-2-2016 , 2 , 3

i want make R_number count using 2 values in Date_Reservation and exam_id

What I have tried:

How i solve this problem when i add a new P_id

Posted 21-Feb-16 3:20am

Member 12244977

Updated 21-Feb-16 19:53pm

Add a Solution

Comments

CHill60 21-Feb-16 9:38am

I can't work out what your problem is. Can you post the code you are using to "make R_number count using 2 values in Date_Reservation and exam_id" or can you find another way of explaining your problem?

Member 12244977 21-Feb-16 9:42am

when i insert new value in P_id the R_Number Counter alone but in one condition Like where Date_Reservation = '' and exam_id = ''

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)

Nigam,Ashish · Answer 1 · 2016-02-21T19:53:00

Solution 1

Use IsNull on this Query:

insert into ResrvationData (P_id ,R_Number ,Date_Reservation ,Exame_id , Doctor_id)
values (1 ,(select IsNull(MAX(R_Number),0) from ResrvationData where Date_Reservation = '2016-02-22' and Exame_id = 1 ) +1 ,'2016-02-22' ,1 ,1 )

Ashish Nigam

Posted 21-Feb-16 19:53pm

Nigam,Ashish