From 3b53e42162fbcbdba782016f7b63604081f2b6b1 Mon Sep 17 00:00:00 2001
From: BonfaceKilz
Date: Mon, 7 Jun 2021 11:14:30 +0300
Subject: gn3: db: Make "WHERE" clause optional

* gn3/db/__init__.py (fetchone): Make "WHERE" an Optional arg.
---
 gn3/db/__init__.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'gn3/db/__init__.py')

diff --git a/gn3/db/__init__.py b/gn3/db/__init__.py
index 997a230..d311dea 100644
--- a/gn3/db/__init__.py
+++ b/gn3/db/__init__.py
@@ -61,16 +61,17 @@ def update(conn: Any,
 
 def fetchone(conn: Any,
              table: str,
-             where: Dataclass) -> Optional[Dataclass]:
+             where: Optional[Dataclass]) -> Optional[Dataclass]:
     """Run a SELECT on a table. Returns only one result!"""
     if not any(astuple(where)):
         return None
     where_ = {k: v for k, v in asdict(where).items()
               if v is not None and k in TABLEMAP[table]}
     sql = f"SELECT * FROM {table} "
-    sql += "WHERE "
-    sql += " AND ".join(f"{TABLEMAP[table].get(k)} = "
-                        "%s" for k in where_.keys())
+    if where:
+        sql += "WHERE "
+        sql += " AND ".join(f"{TABLEMAP[table].get(k)} = "
+                            "%s" for k in where_.keys())
     with conn.cursor() as cursor:
         cursor.execute(sql, tuple(where_.values()))
         return DATACLASSMAP[table](*cursor.fetchone())
-- 
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