problem with inserting record into database

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i am inserting record into database it gives error:Duplicate entry '0' for key 'PRIMARY'. i am using mysql database. please help me?

Posted 15-Mar-14 0:12am

Member 9027346

Updated 15-Mar-14 0:24am

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Maciej Los 15-Mar-14 9:35am

Please, be more specific and provide more details about your issue. We can't read in your mind and we don't see your screen. Improve question and provide details about the structure of table and the way you are trying to add data.

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Sandeep Singh Shekhawat · Answer 1 · 2014-03-15T00:15:00

Solution 1

I can guess that You are inserting same value in your primary key field. SO I will be suggest to you that you should set is identity field --Yes and set seed value 1 and auto increment 1.

SQL

CREATE TABLE Persons
(
ID int IDENTITY(1,1) PRIMARY KEY,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Address varchar(255),
City varchar(255)
)

Thanks.

Posted 15-Mar-14 0:15am

Sandeep Singh Shekhawat

Comments

Member 9027346 15-Mar-14 6:27am

already i set id is autoincrement.

Sandeep Singh Shekhawat 15-Mar-14 6:33am

Please check your Identity seed and Identity increment value for id field and (is Identity) should be Yes. How could you insert 0 (zero) in your table already?

Member 9027346 15-Mar-14 6:54am

i have already 2 record in table.error comes at the time of inserting 3 record.

Sandeep Singh Shekhawat 15-Mar-14 7:04am

What is Ids of both record these are already inserted in your database table? These rows ids should be 1 and 2 respectively.

Member 9027346 15-Mar-14 7:05am

yes,ids are 1,2

Sandeep Singh Shekhawat 15-Mar-14 7:10am

It can be possible that you would be inserting record on another table that has foreign key constraint relation ship and that taking 0 value for foreign key value of Id in another table. Please check this link http://stackoverflow.com/questions/12179770/mysql-1062-duplicate-entry-0-for-key-primary

Sandeep Singh Shekhawat 15-Mar-14 7:17am

Hope It was helpful....!!

King Fisher · Answer 2 · 2014-03-15T00:22:00

Solution 2

The primary key must contains unique values ,so you can't enter duplicate values.

Posted 15-Mar-14 0:22am

King Fisher