Transaction Rollback Due to FTS Table Updates via Triggers During Multi-Table Insertion The core issue involves a transaction that fails when triggers attempt to update Full-Text Search (FTS) virtual tables during multi-step insertions into related base tables. The failure occurs specifically when using the Better-Sqlite3 library in JavaScript, though the same SQL statements succeed when…
Understanding the Impact of Affinity on CASE WHEN Expressions in SQLite Issue Overview The core issue revolves around the unexpected behavior of SQLite queries when using the CASE WHEN expression, particularly in scenarios where the expression’s result is compared with another value. The problem manifests when the CASE WHEN expression alters the affinity of the…
Understanding the Assertion Failure in sqlite3VdbeExec This guide addresses the assertion failure triggered during the execution of a SQL query involving a RIGHT JOIN on a WITHOUT ROWID table and a view. The error manifests as a crash with the message Assertion ‘pC!=0’ failed in the sqlite3VdbeExec function. We dissect the root causes, explore the…
Understanding the .import Command’s Empty Column Separator Limitation The SQLite command-line interface (CLI) provides the .import utility to load data from text files into database tables. A common use case involves importing a text file into a single-column table, where each line of the file represents a full row in the table. Users attempting this…
Transaction Commit Failures in High-Volume Data Insertion Workflows Issue Overview The core problem involves an SQLite database file reverting to a 20KB size after an application restart, despite apparent successful insertion of millions of rows during runtime. The application uses .NET 7 with the System.Data.SQLite library, transactions, and prepared statements to handle bulk operations (e.g.,…
Understanding the Performance Gap Between SQLite and Stream-Based Tools When comparing the performance of SQLite with stream-based tools like sed and grep, it’s essential to understand the fundamental differences in how these tools operate. SQLite is a relational database management system designed for structured data storage and retrieval, while sed and grep are specialized tools…
Understanding the Content-Security-Policy (CSP) and WebAssembly Interaction The core issue revolves around the integration of SQLite’s WebAssembly (WASM) module within a web application that enforces a strict Content-Security-Policy (CSP). The CSP is a critical security feature that helps prevent various types of attacks, such as Cross-Site Scripting (XSS) and data injection attacks, by controlling which…
Understanding the Syntax Error in Timestamp Interval Calculations During JOIN Operations Issue Overview The core problem revolves around a syntax error triggered during the execution of a SQLite SELECT query involving a LEFT JOIN between two tables (airModules_Event_tracking and FareNet_Searches). The error message explicitly references a syntax issue near !0, but this is a red…
Issue Overview: The Challenge of Millisecond-Precision Unix Timestamps in SQLite Working with Unix timestamps in SQLite, particularly when millisecond precision is required, presents several challenges. The primary issue stems from SQLite’s native date and time functions, which are designed to handle timestamps with second-level precision. While SQLite does provide mechanisms to achieve millisecond precision, these…
Issue Overview: Complex Joins with Partial NULL Values The problem revolves around joining three tables (table1, table2, and table3) under conditions where partial NULL values exist in join columns (id1 and id2 of table1). The goal is to produce a result set that includes all rows from table1, matching field1 from table2, and field2 values…