CodePudding user response:

You write data record primary key repeat,

CodePudding user response:

First check your student table, which fields are for keywords, and check your written records in the field of value,

CodePudding user response:

Thank you very useful

CodePudding user response:

Primary key conflict, you need to insert the data rows of the primary key in the table already exists, modify the data, this is a common mistake of database

CodePudding user response:

Upstairs said is correct, modify the constraints or you can't have duplicate data table directly,