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  1. Calculated fields
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  4. ARR_INDEX_OF

ARR_INDEX_OF

Written by
Yandex Cloud
Updated at December 19, 2025

SyntaxSyntax

ARR_INDEX_OF( array, value )

DescriptionDescription

Returns the position (index) of the first occurrence of the value value in the array array. The indexing starts from 1. If the value value is not found in the array, the function returns 0.

Argument types:

  • array — Array of fractional numbers | Array of integers | Array of strings
  • value — Fractional number | Integer | String

Return type: Integer

ExamplesExamples

ARR_INDEX_OF(ARRAY('a', 'b', 'c', 'b'), 'b') = 2
ARR_INDEX_OF(ARRAY(1.1, 2.2, 3.3, 3.3), 3) = 3
ARR_INDEX_OF(ARRAY(1, 2, 3, 2), 2) = 2
ARR_INDEX_OF(ARRAY('a', 'b', 'c', 'b'), 'd') = 0

Data source supportData source support

ClickHouse 21.8, Files, Google Sheets, PostgreSQL 9.3, Trino, Yandex Documents.

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