added Renata files and developed beauty output

other/Renata/tables/racers_table.py

@@ -0,0 +1,62 @@
+# Таблица Телефоны и особые действия с ней.
+
+from dbtable import *
+
+class RacersTable(DbTable):
+    def table_name(self):
+        return self.dbconn.prefix + '"Racers"'
+
+    def columns(self):
+        return {"racer_id": ["serial", "PRIMARY KEY"],
+                "surname": ["varchar(64)", "NOT NULL"],
+                "name": ["varchar(64)", "NOT NULL"],
+                "birthday": ["date", "NOT NULL", "CHECK (extract(year from age(current_date, birthday)) < 60)"],
+                "country_id": ["integer", "NOT NULL", 'REFERENCES public."Сountries"(country_id) ON DELETE CASCADE'],
+                "wins": ["integer", "NOT NULL", "DEFAULT 0"]}
+    def table_constraints(self):
+        return ["UNIQUE (surname, name, birthday)"]
+    def primary_key(self):
+        return ["racer_id"]
+    def column_names_without_id(self):
+        res = sorted(self.columns().keys(), key = lambda x: x)
+        res.remove('racer_id')
+        return res
+    def all_by_country_id(self, cid):
+        sql = f"SELECT * FROM {self.table_name()} WHERE country_id = " + "%s ORDER BY surname, name, birthday"
+        cur = self.dbconn.conn.cursor()
+        cur.execute(sql, (cid,))
+        return cur.fetchall()           
+    def delete_by_cid(self, cid):
+        sql = f"DELETE FROM {self.table_name()} WHERE country_id = " +"%s"
+        cur = self.dbconn.conn.cursor()
+        cur.execute(sql, (cid,))
+        self.dbconn.conn.commit()
+        return
+    def find_by_position(self, cid, num):
+        sql = f"SELECT * FROM {self.table_name()} WHERE "+ "country_id = %(cid)s ORDER BY surname, name, birthday LIMIT 1 OFFSET %(offset)s"
+        cur = self.dbconn.conn.cursor()
+        cur.execute(sql, {"cid": cid, "offset": num - 1})
+        return cur.fetchone()
+    def delete_by_rid(self, rid):
+        sql = f"DELETE FROM {self.table_name()} WHERE racer_id = " +"%s"
+        cur = self.dbconn.conn.cursor()
+        cur.execute(sql, (rid,))
+        self.dbconn.conn.commit()
+        return
+    def checkbirthday(self, val):
+        sql = "SELECT extract(year from age(current_date, %s)) >= 60"
+        cur = self.dbconn.conn.cursor()
+        cur.execute(sql, (val,))
+        return cur.fetchone()
+    def select_by_s_n_b(self, vals):
+        sql = f"SELECT racer_id FROM {self.table_name()} WHERE name = " + "%s AND surname = %s AND birthday = %s"
+        cur = self.dbconn.conn.cursor()
+        cur.execute(sql, vals)
+        return cur.fetchone()
+    def insertbydef(self, vals):
+        sql = f"INSERT INTO {self.table_name()}(birthday, country_id, name, surname) VALUES "+"(%s,%s,%s,%s)"
+        cur = self.dbconn.conn.cursor()
+        print(vals)
+        cur.execute(sql, vals)
+        self.dbconn.conn.commit()
+        return