Files
doris/docs/zh-CN/docs/sql-manual/sql-functions/array-functions/array_position.md
jiafeng.zhang db38e7b6dc [typo](docs)Add array function version number (#14843)
[typo](docs)Add array function version number
2022-12-06 18:09:22 +08:00

2.1 KiB

title, language
title language
array_position zh-CN

array_position

array_position

description

Syntax

BIGINT array_position(ARRAY<T> arr, T value)

返回value在数组中第一次出现的位置/索引。

position - value在array中的位置(从1开始计算);
0        - 如果value在array中不存在;
NULL     - 如果数组为NULL。

notice

仅支持向量化引擎中使用

example

mysql> set enable_vectorized_engine=true;

mysql> SELECT id,c_array,array_position(c_array, 5) FROM `array_test`;
+------+-----------------+------------------------------+
| id   | c_array         | array_position(`c_array`, 5) |
+------+-----------------+------------------------------+
|    1 | [1, 2, 3, 4, 5] |                            5 |
|    2 | [6, 7, 8]       |                            0 |
|    3 | []              |                            0 |
|    4 | NULL            |                         NULL |
+------+-----------------+------------------------------+

mysql> select array_position([1, null], null);
+--------------------------------------+
| array_position(ARRAY(1, NULL), NULL) |
+--------------------------------------+
|                                    2 |
+--------------------------------------+
1 row in set (0.01 sec)

keywords

ARRAY,POSITION,ARRAY_POSITION