From 9711e9c064475af3f37e34786cf0529c7fdc331f Mon Sep 17 00:00:00 2001
From: Nikolay Novik <nickolainovik@gmail.com>
Date: Sat, 28 Oct 2023 14:36:42 -0400
Subject: [PATCH] Implement setinputsizes. (#453)

---
 CHANGES.txt          |  8 ++++++++
 aioodbc/cursor.py    | 18 +++++++++++++++---
 tests/test_cursor.py |  6 +++++-
 3 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/CHANGES.txt b/CHANGES.txt
index d5050f9..05c8daa 100644
--- a/CHANGES.txt
+++ b/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+.
diff --git a/aioodbc/cursor.py b/aioodbc/cursor.py
index 9ab82b9..52c5881 100644
--- a/aioodbc/cursor.py
+++ b/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."""
diff --git a/tests/test_cursor.py b/tests/test_cursor.py
index 9e2535d..e653de7 100644
--- a/tests/test_cursor.py
+++ b/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()