Add filtering option

src/based/db.py

@@ -101,7 +101,6 @@ class DBConnector:
         ).format(Literal(table_name))
         with self.connection() as conn:
             result = conn.execute(stmt).fetchone()
-            print(result)
             return False if result is None else result["exists"]
 
     def createTable(
@@ -149,6 +148,17 @@ class DBConnector:
         with self.connection() as conn:
             return conn.execute(stmt).fetchall()
 
+    def filterFromTable(
+        self, table_name: str, columns: list[str], where: list[ColumnCondition]
+    ) -> list[dict[str, Any]]:
+        stmt = SQL("SELECT {} FROM {} WHERE {}").format(
+            SQL(", ").join(map(lambda c: Identifier(c), columns)),
+            Identifier(table_name),
+            SQL(", ").join(map(lambda cp: cp.sql(), where)),
+        )
+        with self.connection() as conn:
+            return conn.execute(stmt).fetchall()
+
     def updateDataInTable(
         self, table_name: str, columns: list[ColumnUpdate], where: list[ColumnCondition]
     ):