Implement setinputsizes. (#453)

CHANGES.txt

@@ -1,5 +1,13 @@
 Changes
 -------
+0.4.1 (2023-10-28)
+^^^^^^^^^^^^^^^^^^
+* Implemented cursor setinputsizes.
+* Implemented cursor fetchval.
+* Added more type annotations.
+* Added autocommit setter for cusror.
+
+
 0.4.0 (2023-03-16)
 ^^^^^^^^^^^^^^^^^^
 * Fixed compatibility with python 3.9+.

aioodbc/cursor.py

@@ -145,9 +145,21 @@ def executemany(self, sql, *params):
     def callproc(self, procname, args=()):
         raise NotImplementedError
 
-    async def setinputsizes(self, *args, **kwargs):
-        """Does nothing, required by DB API."""
-        return None
+    async def setinputsizes(self, sizes=None) -> None:
+        """Explicitly declare the types and sizes of the parameters in a query.
+        Set to None to clear any previously registered input sizes.
+
+        :param sizes: A list of tuples, one tuple for each query parameter,
+            where each tuple contains:
+                1. the column datatype
+                2. the column size (char length or decimal precision)
+                3. the decimal scale.
+
+            For example:
+                [(pyodbc.SQL_WVARCHAR, 50, 0), (pyodbc.SQL_DECIMAL, 18, 4)]
+        """
+        # sizes: Optional[Iterable[Tuple[int, int, int]]]
+        await self._run_operation(self._impl.setinputsizes, sizes)
 
     async def setoutputsize(self, *args, **kwargs):
         """Does nothing, required by DB API."""

tests/test_cursor.py

@@ -56,7 +56,11 @@ async def test_cursor(conn):
     assert cur.arraysize == 1
     assert cur.rowcount == -1
 
-    r = await cur.setinputsizes()
+    r = await cur.setinputsizes(
+        [
+            (pyodbc.SQL_WVARCHAR, 50, 0),
+        ]
+    )
     assert r is None
 
     await cur.setoutputsize()