| --- |
| { |
| "title": "PERCENTILE_ARRAY", |
| "language": "en" |
| } |
| --- |
| |
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| |
| ## PERCENTILE_ARRAY |
| ### Description |
| #### Syntax |
| |
| `ARRAY_DOUBLE PERCENTILE_ARRAY(BIGINT, ARRAY_DOUBLE p)` |
| |
| Calculate exact percentiles, suitable for small data volumes. Sorts the specified column in descending order first, then takes the exact pth percentile. |
| The return value is the result of sequentially taking the specified percentages in the array p. |
| Parameter Description: |
| expr: Required. Columns whose values are of type integer (up to bigint). |
| p: The exact percentile is required, an array of constants, taking the value [0.0, 1.0]. |
| |
| ### example |
| ``` |
| mysql> select percentile_array(k1,[0.3,0.5,0.9]) from baseall; |
| +----------------------------------------------+ |
| | percentile_array(`k1`, ARRAY(0.3, 0.5, 0.9)) | |
| +----------------------------------------------+ |
| | [5.2, 8, 13.6] | |
| +----------------------------------------------+ |
| 1 row in set (0.02 sec) |
| |
| ``` |
| |
| ### keywords |
| PERCENTILE_ARRAY |
