x_code Summary Updating a Microsoft Access database with SQL that includes a subquery in the SET clause is not directly supported. The provided query fails due to Access’s limitations with subqueries in UPDATE statements. Root Cause Microsoft Access does not allow subqueries in the SET clause of an UPDATE statement. The query attempts to assign the … Read more
Summary The problem at hand is making the changingcells line dynamic when using VBA to create new scenarios. Currently, the line can only be hardcoded, but the goal is to use a dynamic range, table reference, or array. Root Cause The root cause of this issue is the lack of a built-in VBA method to … Read more
Summary To determine the kernel version built by Yocto without deploying to the target, the KERNEL_VERSION variable is key. However, it is not directly accessible via bitbake -e because it is set during the kernel configuration phase, not the image configuration phase. Root Cause The KERNEL_VERSION variable is defined in the kernel recipe (linux-yocto.inc) and … Read more
Summary This incident stemmed from a Bash script that attempted to populate an array with Docker container names but always produced an empty array. The script printed the names correctly inside the loop, yet the array remained empty afterward. The underlying issue was not Docker, not awk, and not array syntax — it was process … Read more
Summary Web scraping Dexscreener using Selenium and Chrome WebDriver fails due to immediate server disconnection. The issue arises from anti-bot mechanisms detecting automation, causing the session to terminate. Root Cause Anti-bot detection: Dexscreener identifies automated browser sessions via Selenium. Automation flags: Chrome WebDriver exposes automation flags, triggering disconnection. IP blocking: Repeated requests from the same … Read more
Summary The issue arises when attempting to conditionally send an email only if a query returns no data in Oracle BI Publisher Reports. The query was intentionally designed to return no results by including AND 1 = 0, but the email was not triggered as expected. The root cause lies in how BI Publisher evaluates … Read more
Summary A Unity team adopted inconsistent C# formatting practices, leading to unreadable scripts, merge conflicts, and subtle logic bugs. The absence of standardized conventions, enforced tooling, and shared team guidelines caused code quality to degrade as the project grew. Root Cause No unified formatting standard across the team. Lack of .editorconfig or analyzer enforcement, allowing … Read more
Summary This postmortem analyzes a common Android Navigation Component failure: navigating from one included sub‑graph to another inside a single‑activity architecture. The issue appears when a LoginFragment inside nav_graph attempts to navigate to the start destination of main_nav_graph, but navigation silently fails. Root Cause The root cause is misunderstanding how included navigation graphs behave. Included … Read more
Summary This incident examines a common misconception in C++: whether objects removed from an STL container continue occupying memory and whether developers must manually free them. A std::list<structShell> was used, and elements were erased via remove_if. The concern was whether this causes memory leaks or lingering allocations. Root Cause The confusion stems from misunderstanding how … Read more
Summary This postmortem analyzes what happens when a native Swift iOS app is replaced with a cross‑platform rewrite (React Native) while keeping the same bundle identifier and shipping it as a standard App Store update. The focus is on data persistence, Keychain continuity, and App Store acceptance. The short answer: yes, this works, but only … Read more