Question

I’m using Mysql (5.5.27) with .Net connector (6.5.4), and when i’m trying to insert some data, i’m getting following error.

Incorrect string value: '\xF3\xB6\xA5\x89f'...' for column 'STACK_TRACE' at row 1

I have already searched enough on stack overflow, and tried following charset & collation for database, table and column.

• ‘utf8’ ‘utf8_general_ci’
• ‘utf8’ ‘utf8_unicode_ci’
• ‘utf8mb4’ ‘utf8mb4_general_ci’
• ‘utf8mb4’ ‘utf8mb4_unicode_ci’

I have set ‘charset=utf8’ in connection string properly.

• Is there any thing wrong with that particular unicode character ? I don’t have control over the data, its collected from lot of android phones.
• Is it mysql bug ?

Answer 1

I have solved it, by doing following changes.

• used “;CharSet=utf8mb4;” in connection string. I missed this one earlier. I was using “utf8”.
• set database’s default charset, table’s default charset and all column’s charset to ‘utf8mb4’
• set database’s default collation, table’s default collation and all column’s collation to ‘utf8mb4_unicode_ci’

As @eggyal mentions, column charset and collation only matters, i have set all default values, so that I don’t have update all new columns in future.