1 files changed, 14 insertions, 1 deletions
diff --git a/qc_app/db/datasets.py b/qc_app/db/datasets.py
index 5816146..448db18 100644
--- a/qc_app/db/datasets.py
+++ b/qc_app/db/datasets.py
@@ -1,5 +1,6 @@
 """Functions for accessing the database relating to datasets."""
 from datetime import date
+from typing import Optional
 
 import MySQLdb as mdb
 from MySQLdb.cursors import DictCursor
@@ -109,7 +110,7 @@ def probeset_create_dataset(conn: mdb.Connection,#pylint: disable=[too-many-argu
         }
         cursor.execute(
             """
-            insert into ProbeSetFreeze(
+            INSERT INTO ProbeSetFreeze(
               ProbeFreezeId, AvgId, Name, Name2, FullName, ShortName,
               CreateTime, public, DataScale)
             VALUES(
@@ -118,3 +119,15 @@ def probeset_create_dataset(conn: mdb.Connection,#pylint: disable=[too-many-argu
             """,
             dataset)
         return {**dataset, "datasetid": cursor.lastrowid}
+
+def probeset_dataset_by_id(
+        conn: mdb.Connection, datasetid: int) -> Optional[dict]:
+    """Fetch a ProbeSet dataset by its ID"""
+    with conn.cursor(cursorclass=DictCursor) as cursor:
+        cursor.execute("SELECT * FROM ProbeSetFreeze WHERE Id=%s",
+                       (datasetid,))
+        result = cursor.fetchone()
+        if bool(result):
+            return dict(result)
+
+    return None