Understanding the SQLite CLI Commands vs. SQL Statements The core issue revolves around the confusion between SQLite CLI commands and SQL statements. SQLite CLI commands, such as .mode csv and .import, are specific to the SQLite Command Line Interface (CLI) and are not recognized as valid SQL statements by the SQLite library. These commands are…
Issue Overview: Prepare Script Triggers Unintended SQLite.org Release Download During Git-Based Installation The SQLite-WASM package includes a prepare script in its package.json that downloads and extracts the latest official SQLite release from sqlite.org during installation when using Git-based sources. This behavior overwrites local code modifications or branch-specific changes when installing via npm or yarn from…
Understanding SQLite Extensions, Precompiled DLL Limitations, and Custom Compilation Workflows The core challenge revolves around two interconnected issues: The absence of the generate_series virtual table in precompiled SQLite binaries. The process of enabling SQLite features and integrating custom extensions like fileio.c into a Windows DLL using cl.exe. These problems stem from SQLite’s design philosophy of…
Understanding the System.Data.SQLite.dll Load Failure and Its Implications The core issue revolves around the inability to load the System.Data.SQLite.dll library in a .NET environment on Windows 10. The error message indicates that the library or one of its dependencies cannot be found or loaded. This problem is not unique to the specific version of .NET…
Understanding FTS5 Table Dependencies and Tokenizer Validation Failures When working with SQLite’s Full-Text Search version 5 (FTS5), users may encounter two critical errors related to custom tokenizers: Inability to drop FTS5 tables with no such tokenizer errors Invalid no such fts5 table errors when querying fts5vocab auxiliary tables These issues arise from how FTS5 validates…
Issue Overview: Assertion Failure in valueFromFunction During Complex Query Execution The core problem involves an assertion failure triggered during execution of a complex SQL query sequence in SQLite version 3.39.0. The failure occurs at line 80164 of sqlite3.c with the message Assertion ‘pCtx->pParse->rc==SQLITE_OK’ failed, specifically within the valueFromFunction() routine that handles SQL function evaluation during…
Issue Overview: Deprecated SQLITE_THREAD_OVERRIDE_LOCK Flag in Windows Makefile The SQLITE_THREAD_OVERRIDE_LOCK flag is a compiler option that has historically been used in SQLite’s Windows build process, specifically within the Makefile.msc file. This flag was designed to override the default threading behavior in SQLite, allowing developers to customize how SQLite handles thread synchronization and locking mechanisms. However,…
SQLite Encryption and Licensing: A Comprehensive Overview SQLite is a widely-used, lightweight, and public-domain database engine that offers a robust set of features for embedded applications. However, one of its most sought-after features—database encryption—is not included in the public-domain version. Instead, encryption is provided through the SQLite Encryption Extension (SEE), which is a proprietary add-on…
Managing SQLite Custom Function Contexts and Statement Lifecycles Understanding Context Handling in Custom Functions and Prepared Statement Finalization The core issue involves segmentation faults occurring after the initial successful execution of SQLite custom functions that utilize sqlite3_result_text, sqlite3_result_int64, or sqlite3_result_null, but not when using sqlite3_result_error. The problem manifests when reusing prepared statements or database connections…
Issue Overview: Database File Retention After Connection Closure in Delphi FireDac When working with Delphi FireDac and SQLite, developers may encounter a scenario where database files (e.g., .BDB, .SQLite, or .DB3) remain locked by the application process even after executing TFDTable.Close, TFDConnection.Close, and related cleanup methods. This manifests as an inability to delete database files…