How to Resolve SQLite Error 1555: UNIQUE Constraint Failed on Persons.id?

SQLITE_CONSTRAINT_PRIMARYKEY: SQLite Result Code 1555 - UNIQUE Constraint Failed: Persons.id

Your error message indicates a UNIQUE constraint violation during data insertion into your SQLite database. Specifically, it suggests that the id column in the Persons table already contains the same value as the one you are trying to insert.

In your provided code, you have set the id column as the primary key for both the user and item tables, which ensures that each row has a unique identifier. However, it appears that you have duplicate entries in either the user or item tables, resulting in the UNIQUE constraint violation.

To resolve this issue, you can either:

• Modify the data insertion statements: Ensure that each insertion statement includes a unique id value for the corresponding row. You can generate unique IDs using functions like UUID(), RANDOM() (with SQLite version >=3.9), or by using an auto-incrementing primary key column.
• Use INSERT OR IGNORE or INSERT OR REPLACE statements: These statements allow you to bypass the UNIQUE constraint check. INSERT OR IGNORE will ignore duplicate entries and continue inserting other records, while INSERT OR REPLACE will replace existing entries with the new values.

Here's an example using INSERT OR IGNORE:

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