final

app.py

@@ -14,9 +14,14 @@ except:
 
 cursor = conn.cursor()
 
-cursor.execute('CREATE TABLE IF NOT EXISTS tablee(name varchar(10) NOT NULL,surname varchar,city varchar,age smallint);')
+cursor.execute('select max(age) as max_age, min(age) as min_age from test_table where length(name)<6;')
+result = cursor.fetchall()
+
+
+print(f'Максимальный возраст для имен, длина которых меньше 6 символов: {result[0][0]}')
+print(f'Минимальный возраст для имен, длина которых меньше 6 символов: {result[0][1]}')
+
 
-conn.commit()
 cursor.close() # закрываем курсор
 conn.close() # закрываем соединение
 

db/init.sql

@@ -1,12 +1,9 @@
---create database test_db;
---create user test_user with encrypted password '123';
---grant all privileges on database test_db to test_user;
 CREATE TABLE IF NOT EXISTS test_table(
     --id INT PRIMARY KEY, 
-    name varchar(10) NOT NULL,                                 
+    name varchar(10) NOT NULL CONSTRAINT dlina_name CHECK (char_length(name) between 4 and 10),                                 
     surname varchar,
     city varchar,
-    age smallint
+    age smallint CONSTRAINT positive_age CHECK (age > 0 and age<=150)
     );
 
 insert into test_table (name, surname, city, age) 

docker-compose.yaml

@@ -13,7 +13,6 @@ services:
     restart: unless-stopped
     networks:
       - pg-net
-        #ipv4_address: 192.168.100.2
     ports:
       - 10500:5432
     healthcheck:
@@ -21,21 +20,21 @@ services:
       interval: 5s
       timeout: 10s
       retries: 3
-  pgadmin:
+# для ручного мониторинга
-    image: dpage/pgadmin4:8.12.0
+#  pgadmin:
-    container_name: pgadmin_new
+#    image: dpage/pgadmin4:8.12.0
-    environment:
+#    container_name: pgadmin_new
-      PGADMIN_DEFAULT_EMAIL: user@example.com
+#    environment:
-      PGADMIN_DEFAULT_PASSWORD: postgres
+#      PGADMIN_DEFAULT_EMAIL: user@example.com
-    ports:
+#      PGADMIN_DEFAULT_PASSWORD: postgres
-      - 10501:80
+#    ports:
-    restart: unless-stopped
+#      - 10501:80
-    networks:
+#    restart: unless-stopped
-      - pg-net
+#    networks:
-        #ipv4_address: 192.168.100.3
+#      - pg-net
-    depends_on:
+#    depends_on:
-      pg:
+#      pg:
-        condition: service_healthy
+#        condition: service_healthy
   app:
     build:
       context: ./
@@ -45,7 +44,6 @@ services:
     container_name: python-app
     networks:
       - pg-net
-        #ipv4_address: 192.168.100.4
     depends_on:
       pg:
         condition: service_healthy
@@ -54,7 +52,3 @@ volumes:
 networks:
   pg-net:
     driver: bridge
-    #ipam:
-    #  config:
-    #    - subnet: 192.168.100.0/24
-    #    - gateway: 192.168.100.1