Fix(mysql): binary x parsing closes #2130

sqlglot/dialects/mysql.py

@@ -496,6 +496,17 @@ def _parse_set_item_names(self) -> exp.Expression:
 
             return self.expression(exp.SetItem, this=charset, collate=collate, kind="NAMES")
 
+        def _parse_type(self) -> t.Optional[exp.Expression]:
+            # mysql binary is special and can work anywhere, even in order by operations
+            # it operates like a no paren func
+            if self._match(TokenType.BINARY, advance=False):
+                data_type = self._parse_types(check_func=True, allow_identifiers=False)
+
+                if isinstance(data_type, exp.DataType):
+                    return self.expression(exp.Cast, this=self._parse_column(), to=data_type)
+
+            return super()._parse_type()
+
     class Generator(generator.Generator):
         LOCKING_READS_SUPPORTED = True
         NULL_ORDERING_SUPPORTED = False

tests/dialects/test_mysql.py

@@ -81,6 +81,9 @@ def test_ddl(self):
         )
 
     def test_identity(self):
+        self.validate_identity(
+            "SELECT * FROM x ORDER BY BINARY a", "SELECT * FROM x ORDER BY CAST(a AS BINARY)"
+        )
         self.validate_identity("SELECT 1 XOR 0")
         self.validate_identity("SELECT 1 && 0", "SELECT 1 AND 0")
         self.validate_identity("SELECT /*+ BKA(t1) NO_BKA(t2) */ * FROM t1 INNER JOIN t2")