SQLite Encryption Support Dropped in System.Data.SQLite 1.0.113 The removal of encryption support in System.Data.SQLite 1.0.113 has left many developers scrambling for alternatives. This change means that databases previously encrypted using the unofficial encryption API in System.Data.SQLite can no longer rely on this method for securing their data. The immediate concern is finding a robust, reliable,…
SQLite .import Command Fails to Strip Spaces from CSV Header Column Names The SQLite .import command is a powerful tool for importing CSV files into SQLite databases. However, a significant issue arises when the .import command dynamically creates a CREATE TABLE statement based on the CSV header column names. Specifically, the .import command does not…
SQLite’s Abstraction Gaps: Recursive CTEs, Custom Functions, and Writable Views SQLite is a powerful, lightweight, and widely-used database engine that excels in many areas, particularly in embedded systems and applications where simplicity and portability are paramount. However, its design philosophy and scope inherently limit its abstraction capabilities, which can be a bottleneck for developers seeking…
SQLite’s Type Affinity and Column Definition Flexibility SQLite’s approach to data types is unique compared to other relational database management systems. Unlike databases such as MySQL or PostgreSQL, where column types are strictly enforced, SQLite employs a concept called "type affinity." This means that while you can specify any data type name for a column,…
Correlated Subqueries and Column Name Resolution in SQLite In SQLite, the behavior of column name resolution within subqueries can sometimes lead to unexpected results, especially when dealing with correlated subqueries. A correlated subquery is a subquery that references columns from the outer query. This can create confusion when a column name in the subquery does…
SQLite Deserialize Function Fails to Free Memory on Error The sqlite3_deserialize function in SQLite is designed to allow developers to load an in-memory database from a serialized byte array. This function is particularly useful for scenarios where databases need to be quickly loaded into memory without reading from disk. However, a critical issue was identified…
SQLITE_LOCKED_SHAREDCACHE in Multi-Threaded Environments with Shared Cache The issue at hand revolves around the intermittent occurrence of the SQLITE_LOCKED_SHAREDCACHE error in an SQLite in-memory database configured with shared cache mode. This error typically arises when multiple database connections contend for access to the same shared cache, particularly when one connection holds an exclusive lock on…
SQLite Not Equal Operator Returning Unexpected Results When working with SQLite, a common issue that developers encounter is the unexpected behavior of the not equal operator (!= or <>) when dealing with NULL values. Specifically, queries that use the not equal operator may return fewer rows than expected, or even no rows at all, when…
SQLite DLL Placement and Linking Issues in Visual Studio When working with SQLite in a C++ project using Visual Studio on Windows, one of the most common issues developers encounter is related to the correct placement and linking of the SQLite DLL (sqlite3.dll). This issue often manifests as runtime errors where the DLL cannot be…
SQLite IN Operator List Size Constraints and Memory Limitations The SQLite IN operator is a powerful tool for filtering query results based on a set of values. However, its usage comes with certain constraints, particularly when dealing with large lists of values. The IN operator allows you to specify a list of values on the…