mongodb config_error ai_generated true

MongoServerError: compound index has too many fields

ID: mongodb/compound-index-limit

Also available as: JSON · Markdown
82%Fix Rate
86%Confidence
3Evidence
2023-01-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
7 active — — —

Root Cause

Compound index exceeds maximum number of fields (32).

generic

Workarounds

  1. 88% success Redesign index strategy with most selective fields first
  2. 90% success Use partial indexes to reduce index size and field count

Dead Ends

Common approaches that don't work:

  1. Create separate single-field indexes 72% fail

    Cant cover compound queries efficiently

  2. Use wildcard index for everything 78% fail

    Poor query planning