Error Code Portal
SQLiteSQLiteError code

SQLITE_CONSTRAINT

constraint

Alternative forms: 19

What does this code mean?

Code SQLITE_CONSTRAINT · An issue reported by SQLite.

Official explanation · Original text

The SQLITE_CONSTRAINT error code means that an SQL constraint violation occurred while trying to process an SQL statement. Additional information about the failed constraint can be found by consulting the accompanying error message (returned via sqlite3_errmsg() or sqlite3_errmsg16()) or by looking at the extended error code. The SQLITE_CONSTRAINT code can also be used as the return value from the xBestIndex() method of a virtual table implementation. When xBestIndex() returns SQLITE_CONSTRAINT, that indicates that the particular combination of inputs submitted to xBestIndex() cannot result in a usable query plan and should not be given further consideration.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Result and Error Codes ↗

Creator: SQLite authors / Hwaci
License: Public domain dedication (SQLite code and documentation)
Checked on: 2026-11-12

Modifications: English prose extracted; whitespace normalized; Korean context and classified official links added. Python code examples not redistributed.

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