SQLite INSERT RETURNING Clause Incompatibility with PostgreSQL The INSERT RETURNING clause is a powerful feature in SQL databases that allows developers to retrieve the values of the inserted rows directly from the INSERT statement. This feature is particularly useful in scenarios where the inserted data needs to be immediately used or verified. PostgreSQL has long…
SQLite’s Full Table Scan for COUNT(*) and the Need for Approximations SQLite is widely used as an open data publication format, particularly in projects like Datasette, where users frequently perform summary explorations of data. One of the most common operations in such explorations is the COUNT(*) query, which returns the total number of rows in…
SQLite Database Comparisons Affected by DEFAULT CURRENT_TIMESTAMP Columns When working with SQLite databases, a common practice is to use columns with default values such as DEFAULT CURRENT_TIMESTAMP to automatically record the time when a row is inserted. This is particularly useful for columns like created or last_modified, which track the creation or modification time of…
SQLite B-Tree Payload Configuration Limitations SQLite’s B-Tree structure is a fundamental component of its database engine, responsible for organizing and managing data storage efficiently. Each page in the B-Tree contains a header that specifies the minimum and maximum payload sizes for both internal and leaf pages. These payload values determine how much data can be…
SQLite Upsert Query Failure When Transitioning from INSERT OR REPLACE When transitioning from the INSERT OR REPLACE syntax to the native UPSERT syntax in SQLite, users may encounter a specific failure scenario. This issue arises when attempting to use the ON CONFLICT clause in conjunction with a SELECT statement that sources data from a JSON…
SQLite3 Executable Missing After Downloading DLL Files When attempting to run SQLite3 on a Windows 10 machine with an x64 processor, users often encounter confusion when they download and unzip the SQLite package, only to find files like sqlite3.dll and sqlite3.def instead of the expected sqlite3.exe. This issue arises because the downloaded package contains the…
SQLite ALTER TABLE Fails Due to Views Referencing Non-Existent Tables When working with SQLite, a common operation is the use of the ALTER TABLE command to rename tables or modify their structure. However, a specific scenario arises when a view references a table that does not exist, and the PRAGMA LEGACY_ALTER_TABLE is set to 0….
INTEGER PRIMARY KEY as an Alias for ROWID In SQLite, the INTEGER PRIMARY KEY column is a special construct that serves as an alias for the internal ROWID of a table. Every row in a SQLite table has a unique 64-bit signed integer ROWID that identifies it within the table. When a column is defined…
SQLite Provider Not Found Error in .NET Framework 4.7.2 with EF 6.x When integrating SQLite with the .NET Framework 4.7.2 and Entity Framework (EF) 6.x, a common issue arises when attempting to call the resulting library from VBA via a COM interface. The error message "provider not found" typically indicates that the SQLite provider is…
SQLite Column Alias Handling in Aggregated Queries When working with SQLite, one of the most common issues that developers encounter is the handling of column aliases within aggregated queries. This issue becomes particularly pronounced when transitioning from other database systems like SQL Anywhere, where the rules for column alias usage might be more lenient or…