Generated Columns Missing in PRAGMA table_info() Output When working with SQLite, one of the most common tasks is to inspect the schema of a table to understand its structure. This is often done using the PRAGMA table_info() command, which provides a concise summary of the columns in a table, including their names, types, and constraints….
Understanding SQLite3 Compression and Encryption Requirements SQLite3 is a lightweight, serverless, and self-contained database engine widely used in applications ranging from mobile apps to embedded systems. While SQLite3 excels in simplicity and portability, it does not natively support compression or encryption out of the box. This limitation often leads developers to seek external solutions or…
SQLite Query Execution Yields No Results After Initial Success When working with SQLite, a common scenario involves executing queries using the sqlite3_exec() function, which allows for the execution of SQL statements and the handling of results through a callback function. However, a perplexing issue can arise where the first execution of sqlite3_exec() returns the expected…
Understanding SQLite’s Synchronous I/O Behavior and Its Impact on NVMe SSDs SQLite is a widely used embedded database engine known for its reliability, simplicity, and portability. One of its key features is the ability to control the level of synchronization between the database and the underlying storage system using the PRAGMA synchronous command. When set…
Issue Overview: macOS Catalina’s 64-bit Requirement and SQLite Compatibility macOS Catalina, released in 2019, marked a significant shift in Apple’s operating system architecture by dropping support for 32-bit applications entirely. This change meant that all binaries and libraries running on Catalina must be 64-bit compatible. For developers and users relying on SQLite, this transition introduced…
Issue Overview: NULL Comparisons in SQLite LEFT JOIN Queries When working with SQLite, one of the most common issues that beginners encounter is the handling of NULL values in queries, particularly when using LEFT JOIN operations. The problem arises when attempting to filter or compare columns that may contain NULL values. In the context of…
Temporary Database File Creation and Storage in SQLite SQLite is a lightweight, serverless database engine that is widely used for its simplicity and efficiency. One of its key features is the ability to create temporary databases that exist only for the duration of a connection. These temporary databases can be created either in memory or…
Understanding SQLite and Litestream Integration for Database Replication SQLite is a lightweight, serverless database engine that is widely used for its simplicity, portability, and ease of integration into applications. However, one of its limitations is the lack of built-in replication capabilities, which can be a critical requirement for applications needing high availability or disaster recovery….
The Role of Collation in SQLite Queries and Column Definitions Collation in SQLite is a critical aspect of how data is compared and sorted within queries. It determines the rules for comparing text values, which is essential for operations like ORDER BY, GROUP BY, and WHERE clauses. SQLite provides several built-in collation sequences, such as…
SQLite INSERT OR IGNORE with RETURNING Clause Behavior The core issue revolves around implementing a "get or create" pattern in SQLite, where a single SQL statement is desired to either retrieve an existing row or insert a new one and return the rowid in both scenarios. The challenge arises from the behavior of the INSERT…