Description

Provide support for dense_vector search in ES|QL, including:

dense_vector field support:

• Initial dense_vector support
  • ES|QL dense vector field type support #126456
• byte_vector element type
  • ESQL - Add byte element support for dense_vector data type #131863
• bit_vector element type
  • ES|QL - Dense vector tyoe - Enable bit element type #134326
• Casting function TO_DENSE_VECTOR and implicit casting: ESQL - TO_DENSE_VECTOR function and additional casting #134003
• ES|QL - Exclude dense_vector data from response by default #137532
• ES|QL - Remove vectors from _source when applicable #138013
• ES|QL - Support PRESENT, ABSENT, COUNT aggregation functions for dense_vector #135688

Post-MVP - additional ES|QL support will be addressed in #139956

Search support for dense_vector will be addressed in:

• Approximate nearest neighbour support: ES|QL - dense_vector approximate nearest neighbour search support (GA) #126710
• Exact (brute force) search support: ES|QL - dense_vector exact (brute force) search support #130828