confluentinc/ksql

Add an array_positions function.

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#9 158 ouverte le 1 juin 2022

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 (0 commentaires) (0 réactions) (0 assignés)Java (1 048 forks)batch import
enhancementfix-it-weekgood first issuestreaming-engineuser-defined-functions

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Description

Is your feature request related to a problem? Please describe. The existing FIELD function works on a varags array of input strings. It does not work on an array of strings.

E.g.

+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|KSQL_COL_0                                                                                                                                                                 |
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|0                                                                                                                                                                          |

Describe the solution you'd like In the above example, it'd be nice to return 1 or better an array of the positions where the element is present in the array.

See array_positions from https://www.postgresql.org/docs/current/functions-array.html.

Additional context See a short Slack discussion here: https://confluentcommunity.slack.com/archives/C6UJNMY67/p1654021013224899

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