Intermittent “Column Does Not Belong to Table” Error in High-Concurrency SQLite Application

Intermittent “Column Does Not Belong to Table” Error in High-Concurrency SQLite Application

BySQLite.work Team

Issue Overview: Intermittent Column Mismatch During High-Frequency Database Operations The core issue reported involves an intermittent System.Data.SQLite.SQLiteException with the message "Column ‘ORD_SERIAL_NO’ does not belong to table" in a high-throughput C# application using SQLite 3.40.0. The application processes real-time trading data at rates of 300-400 trades per second, with frequent insertions and deletions. The error…

SQLite Connection Dispose() Blocks Other Database Operations

SQLite Connection Dispose() Blocks Other Database Operations

BySQLite.work Team

Issue Overview: Connection Dispose() Causes System-Wide Blocking The core issue revolves around the Dispose() method of a SqliteConnection object causing a system-wide blocking effect, preventing other SQLite databases from being opened or read. This behavior is particularly problematic in a multi-threaded environment where multiple databases are accessed concurrently. The blocking occurs during the Dispose() call,…

SQLite Page Defragmentation and Cell Pointer Array Management

SQLite Page Defragmentation and Cell Pointer Array Management

BySQLite.work Team

SQLite Page Structure and Fragmentation Dynamics A SQLite database is organized into fixed-size pages, typically 4 KB in size. Each page is a self-contained unit that stores either table data (as B-tree pages) or index data (as B+-tree pages). The structure of a B-tree page is critical to understanding how SQLite manages storage efficiency and…

Missing sqlite3_get_autocommit in SQLite WASM Build: Causes and Workarounds

Missing sqlite3_get_autocommit in SQLite WASM Build: Causes and Workarounds

BySQLite.work Team

Issue Overview: sqlite3_get_autocommit Function Unavailable in SQLite WASM Build The core issue revolves around the unavailability of the sqlite3_get_autocommit function in the SQLite WebAssembly (WASM) build. This function is crucial for determining whether a database connection is currently in autocommit mode, a state where each SQL statement is automatically wrapped in its own transaction. Autocommit…

Resolving Undefined Reference to ‘stifle_history’ When Compiling SQLite3.exe with MinGW on Windows

Resolving Undefined Reference to ‘stifle_history’ When Compiling SQLite3.exe with MinGW on Windows

BySQLite.work Team

Compilation Failure Due to Missing ‘stifle_history’ Function in MinGW Environment Diagnosing the Linker Error and Line-Editing Library Conflicts The core issue arises when attempting to compile the SQLite3 command-line shell (sqlite3.exe) on Windows using MinGW (specifically MSYS2). The build process fails during the linking phase with an error: undefined reference to ‘stifle_history’. This error indicates…

Windows Console UTF-8 I/O and Version Query Challenges in SQLite CLI

Windows Console UTF-8 I/O and Version Query Challenges in SQLite CLI

BySQLite.work Team

Registry Key Handling and OS Version Query Missteps The core issue revolves around the handling of Windows registry keys and the querying of OS version information in the SQLite CLI (Command Line Interface). The discussion highlights several critical missteps and inefficiencies in the current implementation. Firstly, the use of RegUnLoadKey() to close registry keys is…

Potential NULL Pointer Dereference in sqlite3Fts3OpenTokenizer Function

Potential NULL Pointer Dereference in sqlite3Fts3OpenTokenizer Function

BySQLite.work Team

Dereference Failure: NULL Pointer in sqlite3Fts3OpenTokenizer Issue Overview The core issue revolves around a potential NULL pointer dereference in the sqlite3Fts3OpenTokenizer function within the SQLite codebase, specifically in the ext/fts3/fts3_expr.c file. This function is part of SQLite’s Full-Text Search (FTS3) module, which is responsible for tokenizing text data for indexing and searching purposes. The function…

Dependent Query Limitation: Aggregate Expressions in Nested Subqueries

Dependent Query Limitation: Aggregate Expressions in Nested Subqueries

BySQLite.work Team

Issue Overview: Understanding the Limitation of Aggregate Expressions in Nested Subqueries In SQLite, a common issue arises when attempting to use aggregate expressions within nested subqueries, particularly when these expressions are referenced at multiple levels of nesting. This limitation becomes apparent when developers attempt to construct complex queries that require the reuse of aggregate results…

Compiling SQLite for Windows on ARM64: Missing DLLs and Cross-Platform Challenges

Compiling SQLite for Windows on ARM64: Missing DLLs and Cross-Platform Challenges

BySQLite.work Team

Understanding the SQLite.Interop.dll Dependency Chain for Windows ARM64 Environments The core issue revolves around deploying SQLite in Windows virtual machines (VMs) running on Apple Silicon (M1/M2) hardware, specifically when targeting ARM64 architectures. Users encounter missing dependencies such as SQLite.Interop.dll or failures to load the SQLite ODBC connector due to platform mismatches. This problem is exacerbated…

SQLite CLI Silent Termination Issue on Windows 7 with UTF-8 Handling

SQLite CLI Silent Termination Issue on Windows 7 with UTF-8 Handling

BySQLite.work Team

Issue Overview: Silent Termination of SQLite CLI on Windows 7 Without UTF-8 Flag The core issue revolves around the SQLite Command Line Interface (CLI) silently terminating when executing a simple query like SELECT 1; on a Windows 7 system without the -no-utf8 flag. This behavior is unexpected, as the CLI typically outputs the result of…