b41sh opened a new pull request #870:
URL: https://github.com/apache/arrow-datafusion/pull/870
# Which issue does this PR close?
<!--
We generally require a GitHub issue to be filed for all bug fixes and
enhancements and this helps us generate change logs for our releases. You can
link an issue to this PR using the GitHub syntax. For example `Closes #123`
indicates that this PR will close issue #123.
-->
Closes #795
# Rationale for this change
<!--
Why are you proposing this change? If this is already explained clearly in
the issue then this section is not needed.
Explaining clearly why changes are proposed helps reviewers understand your
changes and offer better suggestions for fixes.
-->
Implement PostgreSQL pattern matching operator
# What changes are included in this PR?
<!--
There is no need to duplicate the description in the issue here but it is
sometimes worth providing a summary of the individual changes in this PR.
-->
1. modify sqlparser to support PostgreSQL regex match syntax
[sqlparser-rs#328](https://github.com/ballista-compute/sqlparser-rs/pull/328)
2. use arrow-rs kernel `regexp_match` function to do regular expression
# Are there any user-facing changes?
<!--
If there are user-facing changes then we may require documentation to be
updated before approving the PR.
-->
support pattern matching using POSIX regular expressions
```
> CREATE EXTERNAL TABLE X STORED AS PARQUET LOCATION
'./benchmarks/parquet/nation/';
0 rows in set. Query took 0.005 seconds.
> select n_name from X where n_name ~ '^[A-D]';
+-----------+
| n_name |
+-----------+
| ARGENTINA |
| BRAZIL |
| CANADA |
| CHINA |
+-----------+
4 rows in set. Query took 0.010 seconds.
> select n_name from X where n_name ~* '^[a-d]';
+-----------+
| n_name |
+-----------+
| ARGENTINA |
| BRAZIL |
| CANADA |
| CHINA |
+-----------+
4 rows in set. Query took 0.008 seconds.
> select n_name from X where n_name !~ '^[C-R]';
+----------------+
| n_name |
+----------------+
| ARGENTINA |
| BRAZIL |
| SAUDI ARABIA |
| VIETNAM |
| UNITED KINGDOM |
| UNITED STATES |
+----------------+
6 rows in set. Query took 0.009 seconds.
> select n_name from X where n_name !~* '^[c-r]';
+----------------+
| n_name |
+----------------+
| ARGENTINA |
| BRAZIL |
| SAUDI ARABIA |
| VIETNAM |
| UNITED KINGDOM |
| UNITED STATES |
+----------------+
6 rows in set. Query took 0.009 seconds.
```
<!--
If there are any breaking changes to public APIs, please add the `api
change` label.
-->
--
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: github-unsubscr...@arrow.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
