Refactor regexplike signature (#13394)

* update

* update

* update

* clean up errors

* fix flags types

* fix failed example

Author: jiashenC

datafusion-examples/examples/regexp.rs

@@ -148,7 +148,7 @@ async fn main() -> Result<()> {
 
     // invalid flags will result in an error
     let result = ctx
-        .sql(r"select regexp_like('\b4(?!000)\d\d\d\b', 4010, 'g')")
+        .sql(r"select regexp_like('\b4(?!000)\d\d\d\b', '4010', 'g')")
         .await?
         .collect()
         .await;

datafusion/functions/src/regex/regexplike.rs

@@ -81,26 +81,7 @@ impl RegexpLikeFunc {
     pub fn new() -> Self {
         Self {
             signature: Signature::one_of(
-                vec![
-                    TypeSignature::Exact(vec![Utf8View, Utf8]),
-                    TypeSignature::Exact(vec![Utf8View, Utf8View]),
-                    TypeSignature::Exact(vec![Utf8View, LargeUtf8]),
-                    TypeSignature::Exact(vec![Utf8, Utf8]),
-                    TypeSignature::Exact(vec![Utf8, Utf8View]),
-                    TypeSignature::Exact(vec![Utf8, LargeUtf8]),
-                    TypeSignature::Exact(vec![LargeUtf8, Utf8]),
-                    TypeSignature::Exact(vec![LargeUtf8, Utf8View]),
-                    TypeSignature::Exact(vec![LargeUtf8, LargeUtf8]),
-                    TypeSignature::Exact(vec![Utf8View, Utf8, Utf8]),
-                    TypeSignature::Exact(vec![Utf8View, Utf8View, Utf8]),
-                    TypeSignature::Exact(vec![Utf8View, LargeUtf8, Utf8]),
-                    TypeSignature::Exact(vec![Utf8, Utf8, Utf8]),
-                    TypeSignature::Exact(vec![Utf8, Utf8View, Utf8]),
-                    TypeSignature::Exact(vec![Utf8, LargeUtf8, Utf8]),
-                    TypeSignature::Exact(vec![LargeUtf8, Utf8, Utf8]),
-                    TypeSignature::Exact(vec![LargeUtf8, Utf8View, Utf8]),
-                    TypeSignature::Exact(vec![LargeUtf8, LargeUtf8, Utf8]),
-                ],
+                vec![TypeSignature::String(2), TypeSignature::String(3)],
                 Volatility::Immutable,
             ),
         }
@@ -211,7 +192,34 @@ pub fn regexp_like(args: &[ArrayRef]) -> Result<ArrayRef> {
     match args.len() {
         2 => handle_regexp_like(&args[0], &args[1], None),
         3 => {
-            let flags = args[2].as_string::<i32>();
+            let flags = match args[2].data_type() {
+                Utf8 => args[2].as_string::<i32>(),
+                LargeUtf8 => {
+                    let large_string_array = args[2].as_string::<i64>();
+                    let string_vec: Vec<Option<&str>> = (0..large_string_array.len()).map(|i| {
+                        if large_string_array.is_null(i) {
+                            None
+                        } else {
+                            Some(large_string_array.value(i))
+                        }
+                    })
+                    .collect();
+
+                    &GenericStringArray::<i32>::from(string_vec)
+                },
+                _ => {
+                    let string_view_array = args[2].as_string_view();
+                    let string_vec: Vec<Option<String>> = (0..string_view_array.len()).map(|i| {
+                        if string_view_array.is_null(i) {
+                            None
+                        } else {
+                            Some(string_view_array.value(i).to_string())
+                        }
+                    })
+                    .collect();
+                    &GenericStringArray::<i32>::from(string_vec)
+                },
+            };
 
             if flags.iter().any(|s| s == Some("g")) {
                 return plan_err!("regexp_like() does not support the \"global\" option");

datafusion/sqllogictest/test_files/string/string_view.slt

@@ -731,7 +731,7 @@ EXPLAIN SELECT
 FROM test;
 ----
 logical_plan
-01)Projection: regexp_like(test.column1_utf8view, Utf8("^https?://(?:www\.)?([^/]+)/.*$")) AS k
+01)Projection: regexp_like(test.column1_utf8view, Utf8View("^https?://(?:www\.)?([^/]+)/.*$")) AS k
 02)--TableScan: test projection=[column1_utf8view]
 
 ## Ensure no casts for REGEXP_MATCH