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MSSQL: Update row returns duplicate key error


MSSQL: Update row returns duplicate key error

By : user61288
Date : November 14 2020, 04:48 PM
it helps some times I'm building a web app using CodeIgniter and MSSQL, but when I try to update a row in the DB I'm getting a "duplicate key" error: , The issue is simple, you are updating all users to get the same email
code :
UPDATE users 
SET email='user@mail.com', name='User', surname='Surname', password='1234'
WHERE email='user@mail.com'


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Insert on duplicate key update returns value of 0

Insert on duplicate key update returns value of 0


By : A.Khaled
Date : March 29 2020, 07:55 AM
Hope this helps I am creating a web page where you can edit local listing sites for clients. I am using the INSERT ... ON DUPLICATE KEY UPDATE syntax in mysql and php. Below is the code: , Try this:
code :
    if (mysqli_affected_rows($link) < 1) {
... your code
}
PDO lastInsertId() returns 0 when using on duplicate key update?

PDO lastInsertId() returns 0 when using on duplicate key update?


By : Rosma Marini
Date : March 29 2020, 07:55 AM
Hope that helps There are many places to find the answer on this, but the specificity to PDO may be hindering your search results...
First, make sure to add id=LAST_INSERT_ID(id) to the ON DUPLICATE clause, as noted at the bottom of the DOCS. The id in this case is the column name of your primary key (so in your case it may/may not be titled id).
MSSQL Transaction never returns error

MSSQL Transaction never returns error


By : user2045434
Date : March 29 2020, 07:55 AM
To fix the issue you can do I have a mssql code which never returns error. Here are the codes: , After every UPDATE statement you could add the next check:
code :
IF @@ROWCOUNT = 0
    RAISERROR('@GonderenID and/or @AliciID doesn't exist.', 16, 1);
JPA call to MSSQL stored procedure returns duplicate records

JPA call to MSSQL stored procedure returns duplicate records


By : user5820322
Date : March 29 2020, 07:55 AM
To fix the issue you can do I had gone through the same issue and uncovered the problem.
You have been mentioned the identity annotation @Id for almost all attributes in Entity class. Please mention the identity annotation @Id only to the attribute/attributes that are unique in the resultset. This solved my problem.
MSSQL updating rows using MSSQL Server Management Studio UPDATE statement fails inserting UTF8 characters

MSSQL updating rows using MSSQL Server Management Studio UPDATE statement fails inserting UTF8 characters


By : b995
Date : March 29 2020, 07:55 AM
I hope this helps . For nvarchar preface your unicode string literals with an uppercase N. e.g.N'中文'
Make sure your column data type is nvarchar for unicode characters.
code :
UPDATE ISO_Languages
SET 
name_fr = N'Chinois', 
name_it = N'Cinese',
name_es = N'Chino',
name_de = N'Chinesisch', 
name_zh = N'中文',
name_ru = N'Китайский',
name_ar = N'صينى',
IsEnabled = 1
WHERE code = 'zh-CN';
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