SQLite Schema Update Error: NHibernate and Microsoft.Data.Sqlite Compatibility Issue

SQLite Schema Update Error: NHibernate and Microsoft.Data.Sqlite Compatibility Issue

BySQLite.work Team

Understanding the NHibernate Schema Update Error with Microsoft.Data.Sqlite The error message ERROR NHibernate.Tool.hbm2ddl.SchemaUpdate – could not complete schema update indicates a failure during the schema update process when using NHibernate with Microsoft.Data.Sqlite. This error is particularly puzzling because the same schema update process works without issues when using System.Data.Sqlite. The core of the problem lies…

FTS5 Table Limitations with RETURNING Clause and RowID Retrieval

FTS5 Table Limitations with RETURNING Clause and RowID Retrieval

BySQLite.work Team

Issue Overview: RETURNING Clause Fails to Retrieve Auto-Generated RowID in FTS5 Virtual Tables When working with SQLite’s Full-Text Search version 5 (FTS5) virtual tables, developers may encounter unexpected behavior when attempting to retrieve the auto-generated rowid value using the RETURNING clause after an INSERT operation. In standard SQLite tables, the RETURNING clause reliably returns the…

Resolving SQLite 3.34 Binary Execution Failure on Ubuntu 20.04 Systems

Resolving SQLite 3.34 Binary Execution Failure on Ubuntu 20.04 Systems

BySQLite.work Team

Issue Overview: Mismatched Architecture Between SQLite Binary and Ubuntu Host When attempting to execute the SQLite 3.34 command-line tool (sqlite3) downloaded from the official website on Ubuntu 20.04 systems, users encounter a paradoxical error: $ ./sqlite3 bash: ./sqlite3: No such file or directory This occurs despite confirming the file’s existence through ls, md5sum, and direct…

Resolving SQLITE_TOOBIG Error Due to SQL Statement Length Limit Mismatch

Resolving SQLITE_TOOBIG Error Due to SQL Statement Length Limit Mismatch

BySQLite.work Team

Understanding the SQLITE_TOOBIG Error and SQL Statement Length Limits The SQLITE_TOOBIG error occurs when an SQL statement exceeds the maximum allowed size configured in the SQLite environment. This error manifests as "[SQLITE_TOOBIG] String or BLOB exceeds size limit (statement too long)" and often arises in applications that dynamically generate large SQL statements, such as batch…

SQLite Changeset Undo Operations and Database File Integrity

SQLite Changeset Undo Operations and Database File Integrity

BySQLite.work Team

Issue Overview: Changeset Undo Operations and Database File Integrity When working with SQLite databases, particularly in scenarios involving incremental backups or version control, understanding the behavior of changeset undo operations is crucial. A changeset in SQLite represents a set of modifications (inserts, updates, deletes) applied to a database. The ability to apply and undo these…

and Resolving SQLITE_BUSY Errors in SQLite

and Resolving SQLITE_BUSY Errors in SQLite

BySQLite.work Team

Issue Overview: SQLITE_BUSY Error Due to Unclosed Statements or External Locks The SQLITE_BUSY error is a common issue encountered by developers working with SQLite databases. This error occurs when SQLite is unable to acquire a lock on the database file, which is necessary for performing write operations or certain read operations. The error typically arises…

SQLite Virtual Table Access Issue in Custom Schema

SQLite Virtual Table Access Issue in Custom Schema

BySQLite.work Team

Issue Overview: Virtual Tables in Custom Schema Not Accessible The core issue revolves around the inability to access virtual tables (vtabs) when they are registered in a custom schema within SQLite. The user attempted to create a loadable extension that exposes a set of eponymous virtual tables, which are designed to be accessible without explicit…

SQLite PRAGMA user_version Integer Overflow and Silent Failure Analysis

SQLite PRAGMA user_version Integer Overflow and Silent Failure Analysis

BySQLite.work Team

PRAGMA user_version Integer Overflow and Silent Value Handling Understanding PRAGMA user_version Overflow Behavior and Silent Value Rejection The PRAGMA user_version mechanism in SQLite allows developers to store a 32-bit signed integer in the database header. This value is often used to track schema versions, migration states, or custom metadata. However, when values exceeding the 32-bit…

SQLite JSON Functions and Property Order Preservation

SQLite JSON Functions and Property Order Preservation

BySQLite.work Team

Understanding JSON Property Order in SQLite The issue of whether SQLite’s JSON functions preserve the order of properties within JSON objects is a nuanced topic that touches on both the technical implementation of SQLite and the broader specifications of JSON itself. JSON, or JavaScript Object Notation, is a lightweight data interchange format that is easy…

Null Pointer Dereference in sqlite3_enable_load_extension() with SQLITE_ENABLE_API_ARMOR Enabled

Null Pointer Dereference in sqlite3_enable_load_extension() with SQLITE_ENABLE_API_ARMOR Enabled

BySQLite.work Team

Issue Overview: Null Pointer Dereference in SQLite Extension Loading API Under Armor Mode The core problem revolves around a segmentation fault or null pointer dereference crash occurring when calling the sqlite3_enable_load_extension() function with a NULL database handle (sqlite3* db) while SQLite is compiled with the -DSQLITE_ENABLE_API_ARMOR flag. This flag is designed to harden SQLite’s public…