MEDIAN_TDIGEST (Lakehouse v1)

Computes the median of a numeric data sequence using the t-digest algorithm.

Caution

NULL values are not included in the calculation.

Analyze Syntax

func.median_tdigest(<expr>)

Analyze Examples

func.median_tdigest(table.score).alias('median_score')

|  median_score  |
|----------------|
|      85.0      |

SQL Syntax

MEDIAN_TDIGEST(<expr>)

Arguments

Arguments	Description
<expr>	Any numerical expression

Return Type

Returns a value of the same data type as the input values.

SQL Examples

-- Create a table and insert sample data
CREATE TABLE exam_scores (
  id INT,
  student_id INT,
  score INT
);

INSERT INTO exam_scores (id, student_id, score)
VALUES (1, 1, 80),
       (2, 2, 90),
       (3, 3, 75),
       (4, 4, 95),
       (5, 5, 85);

-- Calculate median exam score
SELECT MEDIAN_TDIGEST(score) AS median_score
FROM exam_scores;

|  median_score  |
|----------------|
|      85.0      |