Issue Overview: MacOS Sonoma Fails to Recognize Attached Database and Table The core issue revolves around a specific user on MacOS Sonoma encountering an error when attempting to access a table within an attached SQLite database. The error message no such table: secrets.secrets indicates that while the database attachment process appears to succeed, the table…
Issue Overview: In-Memory SQLite Database Fails After Fork with ATTACH Disk I/O Error When working with SQLite, combining an in-memory database with an attached on-disk database can be a powerful setup for applications requiring both speed and persistence. However, this configuration can lead to unexpected failures if not handled correctly. A common issue arises when…
Integrating Markdown, Images, and Full-Text Search in a Single-File SQLite Archive The core challenge involves creating a self-contained application that combines markdown files, images, and full-text search capabilities within a SQLite database. The system must serve as both a content repository (via the sqlar table) and a search engine (via FTS5), while allowing deployment as…
Issue Overview: Constructing Parameterized SQLite Date Queries with Variable Offsets in C++/Qt The core challenge involves programmatically generating SQLite BETWEEN clauses with dynamic date offsets in C++ applications using Qt frameworks. Developers need to query date ranges relative to the current time (e.g., "last 300 days") by replacing hardcoded numerical offsets (-300, -280) with integer…
SQLite’s Default String and Blob Size Limit SQLite, by design, imposes certain limits on the size of data that can be stored in a single row or column. One of these limits is the maximum size of a string or blob, which is set to 1,000,000,000 bytes (1 GB) by default. This limit is defined…
Issue Overview: JSON Stringification Problem in json_group_array with ORDER BY The core issue revolves around the behavior of the json_group_array function in SQLite when combined with an ORDER BY clause. Specifically, when json_group_array is used to aggregate JSON objects into an array, and an ORDER BY clause is applied within the function, the resulting output…
Understanding Geopoly Index Selection and Function Argument Order Issue Overview The core challenge revolves around efficiently determining which polygon in a geopoly table contains a given geographic point. Two functions are central to this task: geopoly_contains_point() and geopoly_within(). While geopoly_within() is documented to leverage R*Tree indexes for optimization, initial testing reveals it performs slower than…
Unexpected Discrepancies in ROUND() Function Output Between SQLite Versions 3.42.0 and 3.44.2 Observed Behavior: Mismatched Rounding Results for Computed Floating-Point Values The core issue revolves around unexpected changes in the output of the ROUND() function when applied to computed floating-point values in SQLite versions after 3.42.0. Users report that arithmetic expressions such as 12.7 *…
Issue Overview: WAL Commit Latency and Transaction Isolation Constraints The core challenge revolves around mitigating significant I/O bottlenecks in a high-load environment where SQLite transactions experience prohibitive write latency. The initial approach involves accumulating large transactions to defer disk I/O until storage contention subsides. However, this strategy inherently delays data visibility across processes due to…
Issue Overview: FTS5 Fails to Detect Duplicate Colocated Tokens The core issue revolves around the behavior of SQLite’s FTS5 (Full-Text Search version 5) module when handling duplicate colocated tokens. Colocated tokens are tokens that are treated as synonyms or variants of the same term, such as "first" and "1st." In FTS5, these tokens are typically…