Add "rlike" as an alias for regexp_like (#2)

* Add "rlike" as an alias for regexp_like

* Update docs

Author: rampage644

datafusion/functions/src/regex/regexplike.rs

@@ -33,7 +33,13 @@ use datafusion_expr::{
 use datafusion_macros::user_doc;
 
 use std::any::Any;
-use std::sync::Arc;
+use std::sync::{Arc, OnceLock};
+
+#[derive(Debug)]
+pub struct RegexpLikeFunc {
+    signature: Signature,
+    aliases: Vec<String>,
+}
 
 #[user_doc(
     doc_section(label = "Regular Expression Functions"),
@@ -95,6 +101,7 @@ impl RegexpLikeFunc {
                 ],
                 Volatility::Immutable,
             ),
+            aliases: vec![String::from("rlike")],
         }
     }
 }
@@ -123,6 +130,10 @@ impl ScalarUDFImpl for RegexpLikeFunc {
         })
     }
 
+    fn aliases(&self) -> &[String] {
+        &self.aliases
+    }
+
     fn invoke_with_args(
         &self,
         args: datafusion_expr::ScalarFunctionArgs,

docs/source/user-guide/sql/scalar_functions.md

@@ -1796,6 +1796,7 @@ The following regular expression functions are supported:
 - [regexp_like](#regexp_like)
 - [regexp_match](#regexp_match)
 - [regexp_replace](#regexp_replace)
+- [rlike](#rlike)
 
 ### `regexp_count`
 
@@ -1866,6 +1867,10 @@ SELECT regexp_like('aBc', '(b|d)', 'i');
 
 Additional examples can be found [here](https://github.com/apache/datafusion/blob/main/datafusion-examples/examples/regexp.rs)
 
+#### Aliases
+
+- rlike
+
 ### `regexp_match`
 
 Returns the first [regular expression](https://docs.rs/regex/latest/regex/#syntax) matches in a string.
@@ -1946,6 +1951,10 @@ SELECT regexp_replace('aBc', '(b|d)', 'Ab\\1a', 'i');
 
 Additional examples can be found [here](https://github.com/apache/datafusion/blob/main/datafusion-examples/examples/regexp.rs)
 
+### `rlike`
+
+_Alias of [regexp_like](#regexp_like)._
+
 ## Time and Date Functions
 
 - [current_date](#current_date)