Why Database Collation Settings Break Multi-Language Search

When Luma Retail expanded into Japanese markets in early 2026, their PostgreSQL search queries started returning wrong results. The culprit wasn't code—it was collation. Lucas and Luna break down how database collation settings silently corrupt string comparison, why UTF-8 alone isn't enough, and how one e-commerce company fixed a 12% drop in search accuracy by switching from default 'en_US.UTF-8' to 'ja_JP.UTF-8' and adding ICU collations. They explain the difference between binary, case-insensitive, and natural-language collations, and why cloud databases often hide these settings behind opaque defaults. If you've ever seen a WHERE clause that should work but doesn't, this episode explains why. #DatabaseCollation #PostgreSQL #MultiLanguageSearch #ICU #UTF8 #StringComparison #LumaRetail #JapaneseLocalization #DatabasePerformance #SearchAccuracy #CollationSettings #PostgreSQLICU #Technology #SoftwareEngineering #DataEngineering #FexingoBusiness #BusinessPodcast #DatabaseTech Keep every episode free: buymeacoffee.com/fexingo