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Mike SeddonJorge C. Leitao
ab185d52cca
Mike Seddon authored and Jorge C. Leitao committed c0dad80a10c
ARROW-10969: [Rust][DataFusion] Implement basic String ANSI SQL Functions

This PR implements some of the basic string functions as per the ANSI SQL specification. To properly meet the ANSI specification work will need to be done on the `sqlparser` to support the verbose style that the ANSI spec has such as
```sql
trim(both 'xyz' from 'yxTomxx')
```

Closes #8966 from seddonm1/basic-string-functions

Authored-by: Mike Seddon <seddonm1@gmail.com>
Signed-off-by: Jorge C. Leitao <jorgecarleitao@gmail.com>