S
sqlite_mismatch
Easy Fix
SQLite · Database Engine
SQLite code SQLITE_MISMATCH signals mismatch in schema constraints and input value validity.
Quick Answer
Error code SQLITE_MISMATCH on your SQLite Database Engine means: SQLite code SQLITE_MISMATCH signals mismatch in schema constraints and input value validity.. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
  1. SQLITE_MISMATCH was raised by SQLite while executing a statement path tied to schema constraints and input value validity.
  2. Client-side SQL flow and current DB state are inconsistent for this mismatch condition.
  3. Operational environment settings (filesystem, locking mode, or pragma configuration) contributed to SQLITE_MISMATCH.
How to Fix It
1
Capture SQL statement, sqlite3 return path, and DB mode when SQLITE_MISMATCH occurs.
2
Run a focused reproduction for mismatch using the same transaction and pragma settings.
3
Inspect database file health, journal/WAL behavior, and lock ownership depending on schema constraints and input value validity.
4
Apply a precise fix in query logic, schema, or runtime flags to remove SQLITE_MISMATCH.
5
Re-test on load and verify SQLITE_MISMATCH does not recur in application logs.
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
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