Fixed panic

Author: LucaCappelletti94

src/dialect/sqlite.rs

@@ -88,7 +88,10 @@ impl Dialect for SQLiteDialect {
         ] {
             if parser.parse_keyword(keyword) {
                 let left = Box::new(expr.clone());
-                let right = Box::new(parser.parse_expr().unwrap());
+                let right = Box::new(match parser.parse_expr() {
+                    Ok(expr) => expr,
+                    Err(e) => return Some(Err(e)),
+                });
                 return Some(Ok(Expr::BinaryOp { left, op, right }));
             }
         }

tests/sqlparser_sqlite.rs

@@ -602,6 +602,10 @@ fn test_regexp_operator() {
         }
     );
     sqlite().verified_only_select(r#"SELECT count(*) FROM messages WHERE msg_text REGEXP '\d+'"#);
+
+    // Should return an error, not panic
+    assert!(sqlite().parse_sql_statements("SELECT 1 REGEXP").is_err());
+    assert!(sqlite().parse_sql_statements("SELECT 1 MATCH").is_err());
 }
 
 #[test]