Merge branch 'main' into dependabot/cargo/tracing-opentelemetry-0.21.0

Author: wangrunji0408

Cargo.lock

@@ -18,30 +18,30 @@ RisingWave ingests data from sources like Apache Kafka, Apache Pulsar, Amazon Ki
 
 RisingWave 1.0 is a battle-tested version that has undergone rigorous stress tests and performance evaluations. It has proven its reliability and efficiency through successful deployments in numerous production environments across dozens of companies.
 
-Learn more at [Introduction to RisingWave](https://www.risingwave.dev/docs/current/intro/).
+Learn more at [Introduction to RisingWave](https://docs.risingwave.com/docs/current/intro/).
 
 ![RisingWave](https://github.com/risingwavelabs/risingwave-docs/blob/0f7e1302b22493ba3c1c48e78810750ce9a5ff42/docs/images/archi_simple.png)
 
 
 ## RisingWave Cloud
 
-RisingWave Cloud is a fully-managed and scalable stream processing platform powered by the open-source RisingWave project. Try it out for free at: [risingwave.com/cloud](https://risingwave.com/cloud).
+RisingWave Cloud is a fully-managed and scalable stream processing platform powered by the open-source RisingWave project. Try it out for free at: [cloud.risingwave.com](https://cloud.risingwave.com).
 
 ## Notes on telemetry
 
 RisingWave collects anonymous usage statistics to better understand how the community is using RisingWave. The sole intention of this exercise is to help improve the product. These statistics are related to system resource usage, OS versions and system uptime. RisingWave doesn't have access to any user data or metadata running on RisingWave clusters including source and sink connection parameters, sources, sinks, materialized views, and tables. Users have the option to opt out of this collection using a system parameter. Please refer to the RisingWave user documentation for more details.
 
 ## Get started
 
-- To learn about how to install and run RisingWave, see [Get started](https://www.risingwave.dev/docs/current/get-started/).
-- To learn about how to ingest data and the supported data sources, see [Sources](https://www.risingwave.dev/docs/current/data-ingestion/).
-- To learn about how to transform data using the PostgreSQL-compatible SQL of RisingWave, see [SQL reference](https://www.risingwave.dev/docs/current/sql-references/).
-- To learn about how to deliver data and the supported data sinks, see [Sinks](https://www.risingwave.dev/docs/current/data-delivery/).
-- To learn about new features and changes in the current and previous versions, see [Release notes](https://www.risingwave.dev/docs/current/release-notes/).
+- To learn about how to install and run RisingWave, see [Get started](https://docs.risingwave.com/docs/current/get-started/).
+- To learn about how to ingest data and the supported data sources, see [Sources](https://docs.risingwave.com/docs/current/data-ingestion/).
+- To learn about how to transform data using the PostgreSQL-compatible SQL of RisingWave, see [SQL reference](https://docs.risingwave.com/docs/current/sql-references/).
+- To learn about how to deliver data and the supported data sinks, see [Sinks](https://docs.risingwave.com/docs/current/data-delivery/).
+- To learn about new features and changes in the current and previous versions, see [Release notes](https://docs.risingwave.com/release-notes/).
 
 ## Documentation
 
-To learn about how to use RisingWave, refer to [RisingWave User Documentation](https://www.risingwave.dev/). To learn about the development process, see the [developer guide](docs/developer-guide.md). To understand the design and implementation of RisingWave, refer to the design docs listed in [readme.md](docs/README.md).
+To learn about how to use RisingWave, refer to [RisingWave User Documentation](https://docs.risingwave.com/). To learn about the development process, see the [developer guide](docs/developer-guide.md). To understand the design and implementation of RisingWave, refer to the design docs listed in [readme.md](docs/README.md).
 
 ## Community
 

README.md

@@ -544,4 +544,61 @@ XXX
 query T
 select regexp_replace('💩💩💩💩💩foo🤔️bar亲爱的😭baz这不是爱情❤️‍🔥', 'baz(...)', '这是🥵', 'ic');
 ----
-💩💩💩💩💩foo🤔️bar亲爱的😭这是🥵爱情❤️‍🔥
+💩💩💩💩💩foo🤔️bar亲爱的😭这是🥵爱情❤️‍🔥
+
+query T
+select regexp_count('ABCABCAXYaxy', 'A.');
+----
+3
+
+query T
+select regexp_count('ABCABCAX🤔️axy', 'A.');
+----
+3
+
+query T
+select regexp_count('ABCABCAXYaxy', 'A.', 1, 'i');
+----
+4
+
+query T
+select regexp_count('ABCABCAbXYaxy', 'AB');
+----
+2
+
+query T
+select regexp_count('ABCABCAbXYaxy', 'AB', 1, 'i');
+----
+3
+
+query T
+select regexp_count('ABCABCAXYaxy', '[a-c]', 1, 'i');
+----
+8
+
+query T
+select regexp_count('123ABC#456', '\d{3}');
+----
+2
+
+query T
+select regexp_count('foobarbaz', 'b..', 3);
+----
+2
+
+query error Expected start to be a Unsigned Int32
+select regexp_count('foobarbaz', 'b..', 'g');
+
+query error Expected start to be a Unsigned Int32
+select regexp_count('foobarbaz', 'b..', 'i');
+
+query error invalid regular expression option: "a"
+select regexp_count('foobarbaz', 'b..', 3, 'a');
+
+query error `regexp_count` does not support global flag option
+select regexp_count('foobar', 'b..', 1, 'g');
+
+query T
+select regexp_count('💩💩💩💩💩foo🤔️bar亲爱的😭baz这不是爱情❤️‍🔥', '亲爱的😭', 1, 'i');
+----
+1