Data Engineering

Fixing PostgreSQL Foreign Key Constraint That Silently Fails on Bulk Insert

Bulk-inserting rows into PostgreSQL and watching foreign key violations disappear without an error? This guide explains exactly why that happens and how to force PostgreSQL to catch every violation reliably.

Jun 25, 2026 10m read 👁 3

Fixing Python xlsxwriter That Truncates Long Text in Wrapped Cells

You've enabled text_wrap in xlsxwriter but Excel still cuts off your long strings mid-sentence. The culprit is almost always row height — xlsxwriter doesn't auto-expand it for you. Here's how to fix it properly.

Jun 25, 2026 9m read 👁 4