Script to find and delete doublegainer conditions

python/find_doublegainer_conditions.py

@@ -0,0 +1,42 @@
+#!/usr/bin/python
+import MySQLdb
+
+db = MySQLdb.connect(user="rcdb", host="clasdb.jlab.org", db="rcdb")
+
+# Create a Cursor object to execute queries.
+cur = db.cursor()
+
+# Select data from table using SQL query.
+cur.execute("""
+SELECT left_cnd.run_number,
+       left_cnd.id as left_id,
+       right_cnd.id as right_id,       
+       left_cnd.condition_type_id,
+       condition_types.name as cnd_name
+FROM conditions left_cnd
+LEFT JOIN conditions right_cnd ON
+    left_cnd.run_number = right_cnd.run_number AND
+    left_cnd.condition_type_id = right_cnd.condition_type_id
+LEFT JOIN rcdb.condition_types ON
+    condition_types.id = left_cnd.condition_type_id
+WHERE left_cnd.id < right_cnd.id
+""")
+
+delete_ids = []     # conditions db id-s which are to be deleted
+
+# print the results
+print("{:<7} {:<12} {:<12} {:<10}".format('run', '1st-cnd-id', '2nd-cnd-id', 'name'))
+for row in cur.fetchall():
+    print("{:<7} {:<12} {:<12} {:<10}".format(row[0], row[1], row[2], row[4]))
+
+    # and collect id for deletion
+    delete_ids.append(row[1])
+
+# comma separated ids to delete
+delete_ids_csv = ",".join([str(id) for id in delete_ids])
+
+# delete query
+delete_query = "DELETE FROM `conditions` WHERE `id` IN ({});".format(delete_ids_csv)
+
+print("DELETE query (!) Don't forget to back up first (!): \n")
+print(delete_query)