Aggregate

APPROX_QUANTILES

BigQuery

Calculates approximate quantile boundaries from numeric data. Uses an efficient approximate algorithm for large datasets, returning an array with n+1 elements.

Tipe hasil: ARRAY<T>Diperbarui: 13 Jun 2026

Syntax

SQL

APPROX_QUANTILES(expression, number)

Parameter

expressionnumericwajib

The numeric column or expression to compute quantiles for

numberINT64wajib

The number of quantiles desired (n produces n+1 boundaries)

Contoh Penggunaan

Calculate Quartiles

SQL

1 SELECT
2   APPROX_QUANTILES(salary, 4) as salary_quartiles
3 FROM `project.dataset.employees`;

Calculates the min, Q1, median, Q3, and max from salary values.

Hasil

salary_quartiles
[5000000, 8500000, 12000000, 18000000, 45000000]

Calculate Percentiles

SQL

1 SELECT
2   APPROX_QUANTILES(response_time_ms, 100)[OFFSET(50)] as p50,
3   APPROX_QUANTILES(response_time_ms, 100)[OFFSET(90)] as p90,
4   APPROX_QUANTILES(response_time_ms, 100)[OFFSET(99)] as p99
5 FROM `project.dataset.api_logs`;

Retrieves the 50th, 90th, and 99th percentiles of response time.

Hasil

p50	p90	p99
120	450	1250

Quartiles per Category

SQL

1 SELECT
2   product_category,
3   APPROX_QUANTILES(price, 4) as price_distribution
4 FROM `project.dataset.products`
5 GROUP BY product_category;

Views the price distribution per product category.

Hasil

product_category	price_distribution
Electronics	[99000, 500000, 1500000, 5000000, 25000000]
Fashion	[50000, 150000, 350000, 750000, 5000000]

Median with APPROX_QUANTILES

SQL

1 SELECT
2   department,
3   APPROX_QUANTILES(salary, 2)[OFFSET(1)] as median_salary
4 FROM `project.dataset.employees`
5 GROUP BY department
6 ORDER BY median_salary DESC;

Calculates the median salary per department.

Hasil

department	median_salary
Engineering	15500000
Marketing	12000000
Operations	9500000

Pertanyaan Umum tentang APPROX_QUANTILES

Apa itu fungsi APPROX_QUANTILES di BigQuery?

Calculates approximate quantile boundaries from numeric data. Uses an efficient approximate algorithm for large datasets, returning an array with n+1 elements. Di BigQuery, fungsi APPROX_QUANTILES termasuk dalam kelompok fungsi yang sering digunakan untuk mengolah dan menganalisis data secara efisien.

Bagaimana cara menggunakan APPROX_QUANTILES di BigQuery?

Gunakan sintaks berikut: APPROX_QUANTILES(expression, number). Pastikan argumen yang dimasukkan sudah sesuai dengan tipe data yang diharapkan.

Apa nilai yang dikembalikan oleh fungsi APPROX_QUANTILES?

Fungsi APPROX_QUANTILES mengembalikan nilai bertipe ARRAY<T>. Pastikan tipe data hasil sudah sesuai dengan kebutuhan query atau formula kamu. Jika input mengandung nilai NULL, perilaku fungsi dapat berbeda — selalu periksa dokumentasi untuk memastikan hasilnya sesuai ekspektasi.

Apa saja parameter fungsi APPROX_QUANTILES?

Fungsi ini memiliki 2 parameter wajib. Parameter yang digunakan: expression (numeric, wajib): The numeric column or expression to compute quantiles for; number (INT64, wajib): The number of quantiles desired (n produces n+1 boundaries).

Fungsi Terkait

APPROX_COUNT_DISTINCTAPPROX_TOP_COUNT

Ngulik Langsung

Sudah paham APPROX_QUANTILES? Latih langsung di browser

Latihan interaktif, langsung di browser.

Latihan Langsung →

Kembali ke BigQuery Functions

1	SELECT
2	APPROX_QUANTILES(salary, 4) as salary_quartiles
3	FROM `project.dataset.employees`;

1	SELECT
2	APPROX_QUANTILES(response_time_ms, 100)[OFFSET(50)] as p50,
3	APPROX_QUANTILES(response_time_ms, 100)[OFFSET(90)] as p90,
4	APPROX_QUANTILES(response_time_ms, 100)[OFFSET(99)] as p99
5	FROM `project.dataset.api_logs`;

1	SELECT
2	product_category,
3	APPROX_QUANTILES(price, 4) as price_distribution
4	FROM `project.dataset.products`
5	GROUP BY product_category;

1	SELECT
2	department,
3	APPROX_QUANTILES(salary, 2)[OFFSET(1)] as median_salary
4	FROM `project.dataset.employees`
5	GROUP BY department
6	ORDER BY median_salary DESC;