alamb opened a new issue, #8969: URL: https://github.com/apache/arrow-datafusion/issues/8969
### Is your feature request related to a problem or challenge? The idea is to support the `position` function from postgres: https://www.postgresql.org/docs/9.1/functions-string.html ```sql position(substring in string) ``` For example ```sql postgres=# select position('world' in 'Helloworld'); position ---------- 6 (1 row) ``` ### Describe the solution you'd like As @zy-kkk points out on https://github.com/apache/arrow-datafusion/pull/8862#issuecomment-1906262994 postgres has special syntax To support the syntax `position('world' in 'Helloworld') = 6` we probably need to do it in at https://github.com/sqlparser-rs/sqlparser-rs and add support for this syntax , which may be like adding the `overlay` function in https://github.com/sqlparser-rs/sqlparser-rs/pull/594. Then we can change the datafusion planner to recognize that special syntax and call the `instr` function in https://github.com/apache/arrow-datafusion/pull/8862 ### Describe alternatives you've considered _No response_ ### Additional context This came up while implementing https://github.com/apache/arrow-datafusion/pull/8862 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
