String stats aggregation #

A multi-value metrics aggregation computing length and character statistics over keyword/string values: count, min/max/avg length and Shannon entropy of the character distribution.

Example #

Four product types (t-shirt 7 chars ×60, hat 3 ×30, mug 3 ×20, sticker 7 ×10): count 120, min_length 3, max_length 7, avg_length ≈5.33.

Parameters for string_stats #

• field
  (Required, string) Keyword field you wish to aggregate.
• show_distribution
  (Optional, boolean, default: false) Also return the per-character frequency map.