Homework1

homework-1/create_tables.sql

@@ -1 +1,26 @@
 -- SQL-команды для создания таблиц
+CREATE TABLE employees
+(
+    employee_id int PRIMARY KEY,
+    first_name varchar(100) NOT NULL,
+  last_name varchar(100) NOT NULL,
+  title varchar(100) NOT NULL,
+  birth_date varchar(100) NOT NULL,
+  notes varchar(500) NOT NULL
+);
+
+CREATE TABLE customers
+(
+    customer_id varchar(10) PRIMARY KEY,
+    company_name varchar(100) NOT NULL,
+  contact_name varchar(100) NOT NULL
+);
+
+CREATE TABLE orders
+(
+    order_id int PRIMARY KEY,
+    customer_id varchar(10) NOT NULL REFERENCES customers(customer_id),
+  employee_id int NOT NULL REFERENCES employees(employee_id),
+  order_date varchar(100) NOT NULL,
+  ship_city varchar(100) NOT NULL
+);

homework-1/main.py

@@ -1 +1,29 @@
 """Скрипт для заполнения данными таблиц в БД Postgres."""
+import psycopg2
+import csv
+
+FILE_CUSTOMERS_DATA = 'north_data/customers_data.csv'
+FILE_EMPLOYEES_DATA = 'north_data/employees_data.csv'
+FILE_ORDERS_DATA = 'north_data/orders_data.csv'
+
+
+def insert_data_to_sql(filename, name_table):
+    with open(filename, 'r', encoding='UTF-8') as file:
+        data = csv.DictReader(file)
+        with psycopg2.connect(host="localhost", database="north", user="denis", password="123456") as conn:
+            with conn.cursor() as curs:
+                for row in data:
+                    row_data = []
+                    values_designation = []
+                    for key in list(row.keys()):
+                        row_data.append(row[key])
+                        values_designation.append('%s')
+                    curs.execute(f"INSERT INTO {name_table} VALUES ({', '.join(values_designation)})", tuple(row_data))
+                    row_data.clear()
+                    values_designation.clear()
+        conn.close()
+
+
+insert_data_to_sql(FILE_CUSTOMERS_DATA, 'customers')
+insert_data_to_sql(FILE_EMPLOYEES_DATA, 'employees')
+insert_data_to_sql(FILE_ORDERS_DATA, 'orders')

pyproject.toml

@@ -0,0 +1,14 @@
+[tool.poetry]
+name = "postgres-homeworks"
+version = "0.1.0"
+description = ""
+authors = ["Denis Prusakov <Denikpr@gmail.com>"]
+readme = "README.md"
+
+[tool.poetry.dependencies]
+python = "^3.11"
+
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"