unique constraint failed:student.num

这个错误通常出现在数据库中，表示你正在尝试插入一条记录，但是该记录的某个字段已经存在于数据库中，并且该字段被设置为唯一的。在这种情况下，你需要检查数据库中是否已经存在具有相同唯一值的记录，并确保你要插入的记录的唯一值不与现有记录冲突。如果你使用的是ORM框架，则可能需要检查模型定义以确保唯一性约束正确地应用于数据库表。

相关问题

sqlite3.IntegrityError: UNIQUE constraint failed: Content.内容

This error message indicates that there is a unique constraint applied to the "内容" field in the "Content" table of your SQLite database, and that constraint has been violated.

A unique constraint ensures that no two rows in a table have the same value in a particular column. In this case, it seems that you are trying to insert a row with a value in the "内容" field that already exists in another row, and this violates the unique constraint.

To resolve this issue, you need to either remove the unique constraint from the "内容" field or ensure that the value you are trying to insert is unique. You can also update the existing row with the same value instead of inserting a new one.

解释：Error flushing statements. Cause: org.sqlite.SQLiteException: [SQLITE_CONSTRAINT_PRIMARYKEY] A PRIMARY KEY constraint failed (UNIQUE constraint failed: AUDIT_SCORE_INTE_DATA_VAR.DATAINTE_VAR_ID) ### Cause: org.sqlite.SQLiteException: [SQLITE_CONSTRAINT_PRIMARYKEY] A PRIMARY KEY constraint failed (UNIQUE constraint failed: AUDIT_SCORE_INTE_DATA_VAR.DATAINTE_VAR_ID) ; uncategorized SQLException; SQL state [null]; error code [19]; [SQLITE_CONSTRAINT_PRIMARYKEY] A PRIMARY KEY constraint failed (UNIQUE constraint failed: AUDIT_SCORE_INTE_DATA_VAR.DATAINTE_VAR_ID); nested exception is org.sqlite.SQLiteException: [SQLITE_CONSTRAINT_PRIMARYKEY] A PRIMARY KEY constraint failed (UNIQUE constraint failed: AUDIT_SCORE_INTE_DATA_VAR.DATAINTE_VAR_ID)

这个错误是因为在执行 SQL 语句时，试图插入一个已经存在的主键，从而导致唯一性约束失败。具体来说，这个错误是由于在插入 AUDIT_SCORE_INTE_DATA_VAR 表中的数据时，试图插入一个已经存在的 DATAINTE_VAR_ID 主键所引起的。这个错误代码是 SQLITE_CONSTRAINT_PRIMARYKEY，表示主键约束失败。