MySQL: Gate DELETE LIMIT behind supports_delete_limit()

fuzz/fuzz_seeds/mysql_2615_delete_limit.sql

@@ -0,0 +1 @@
+DELETE FROM customers LIMIT 100

src/dialect/mod.rs

@@ -713,6 +713,17 @@ pub trait Dialect: Debug + Any {
         false
     }
 
+    /// Returns true if the dialect supports `LIMIT` in `DELETE` statements.
+    ///
+    /// ```sql
+    /// DELETE FROM foo LIMIT 10;
+    /// ```
+    /// See <https://dev.mysql.com/doc/refman/8.4/en/delete.html>
+    /// and <https://www.sqlite.org/lang_delete.html>
+    fn supports_delete_limit(&self) -> bool {
+        false
+    }
+
     /// Returns true if the dialect supports an `EXCEPT` clause following a
     /// wildcard in a select list.
     ///

src/dialect/mysql.rs

@@ -195,6 +195,11 @@ impl Dialect for MySqlDialect {
         true
     }
 
+    /// See: <https://dev.mysql.com/doc/refman/8.4/en/delete.html>
+    fn supports_delete_limit(&self) -> bool {
+        true
+    }
+
     fn supports_data_type_signed_suffix(&self) -> bool {
         true
     }

src/dialect/sqlite.rs

@@ -151,6 +151,11 @@ impl Dialect for SQLiteDialect {
         true
     }
 
+    /// See: <https://www.sqlite.org/lang_delete.html>
+    fn supports_delete_limit(&self) -> bool {
+        true
+    }
+
     fn supports_asc_desc_in_column_definition(&self) -> bool {
         true
     }

src/parser/mod.rs

@@ -15233,7 +15233,7 @@ impl<'a> Parser<'a> {
         } else {
             vec![]
         };
-        let limit = if self.parse_keyword(Keyword::LIMIT) {
+        let limit = if self.dialect.supports_delete_limit() && self.parse_keyword(Keyword::LIMIT) {
             self.parse_limit()?
         } else {
             None

tests/sqlparser_common.rs

@@ -23106,3 +23106,16 @@ fn parse_alter_table_reset_options() {
         );
     }
 }
+
+#[test]
+fn parse_delete_limit_dialect_gated() {
+    let sql = "DELETE FROM customers LIMIT 100";
+    all_dialects_where(|d| d.supports_delete_limit()).verified_stmt(sql);
+
+    assert_eq!(
+        all_dialects_where(|d| !d.supports_delete_limit()).parse_sql_statements(sql),
+        Err(ParserError::ParserError(
+            "Expected: end of statement, found: LIMIT".to_string()
+        ))
+    );
+}