Execquery error: voilation of primary key constraint 'pk_user_log_3214ec276f8e662e'.connot insert duplicat key in object dbo.user.log .the duplicate key value is (0), the ststement hasbeen terminated

Question

0.00/5 (No votes)

See more:

hi i am working on my shop project in visual basic 2017 and SQL server express 2014

the same error consist in inserting a data to log information tabel

data tabel as

Id (pk,int not null)
user_name (nvarchar,50)
password (nvarchar,50)
login_time(datetime 7 null)
login_date(datetime 7 null)

and my code is
i am not going to insert a pk value in this query ,

please need help

What I have tried:

sql.AddParam("@u1", m_name)
    sql.AddParam("@u2", TxtPAssword.Text)
    sql.AddParam("@u3", m_time)
    sql.AddParam("@u4", dt1)
    sql.ExecQuery("Insert into user_log(user_name,password,login_time,login_date) " &
                  "Values(@u1,@u2,@u3,@u4)")
    If Noerrors(True) = False Then MsgBox(sql.Exception)

Posted 23-Feb-18 10:43am

yogesh vaidya

Updated 23-Feb-18 10:50am

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)

Richard Deeming · Answer 1 · 2018-02-23T10:51:00

You haven't set the IDENTITY property on the Id column. As a result, every time you insert without specifying a value, it's trying to use the default value, which you've set to 0.

The Id column is the primary key. You can't have more than one record in the table with the same primary key. Therefore, your insert fails with the error in your question.

Either specify the Id in your INSERT query, or set the IDENTITY property on that column.

IDENTITY (Property) (Transact-SQL) | Microsoft Docs[^]