tuple_intersection_integer function

Applies to: Databricks Runtime 18.1 and above

Computes the set intersection of exactly two TupleSketch binary representations with integer summaries.

Syntax

tuple_intersection_integer ( first, second [, mode ] )

Arguments

• first: A TupleSketch in binary format with integer summaries.
• second: A TupleSketch in binary format with integer summaries.
• mode: An optional STRING literal specifying the aggregation mode. Valid values: 'sum', 'min', 'max', 'alwaysone'. The default is 'sum'.

Returns

A BINARY value containing the TupleSketch representing the intersection.

Notes

• The result contains only keys that appear in both input sketches.
• For intersecting more than two sketches, use tuple_intersection_agg_integer.

Error messages

• TUPLE_INVALID_INPUT_SKETCH_BUFFER

Examples

> SELECT tuple_sketch_estimate_integer(
    tuple_intersection_integer(
      tuple_sketch_agg_integer(col1, val1),
      tuple_sketch_agg_integer(col2, val2)
    )
  ) FROM VALUES (1, 1, 1, 4), (2, 2, 2, 5), (3, 3, 4, 6) tab(col1, val1, col2, val2);
2.0

Related

• tuple_intersection_double function
• tuple_intersection_agg_integer aggregate function