From 3a37e1778fd188411a277eac3801dff30a5056f9 Mon Sep 17 00:00:00 2001
From: ada-dmitry <ada.dmitry@gmail.com>
Date: Sat, 11 Nov 2023 20:06:08 +0300
Subject: [PATCH] add 5lab

---
 Lab/Lab#5/lab5.sql  | 36 ++++++++++++++++++++++++++++++++++++
 Practice/SR/sr2.sql |  0
 2 files changed, 36 insertions(+)
 create mode 100644 Lab/Lab#5/lab5.sql
 create mode 100644 Practice/SR/sr2.sql

diff --git a/Lab/Lab#5/lab5.sql b/Lab/Lab#5/lab5.sql
new file mode 100644
index 0000000..5bf2073
--- /dev/null
+++ b/Lab/Lab#5/lab5.sql
@@ -0,0 +1,36 @@
+SELECT * 
+FROM bd_employees 
+WHERE last_name ~ '^[a-zA-Z]+-[a-zA-Z]+$';
+
+SELECT * 
+FROM bd_employees
+WHERE department_id IN (
+	SELECT id
+	FROM bd_departments
+	WHERE street ~ '^[A-Za-z\s]+$'
+);
+
+
+SELECT last_name, 
+       CASE WHEN phone_number LIKE '+7%' 
+	   THEN CONCAT('8', SUBSTRING(phone_number, 3)) 
+	   ELSE phone_number END AS phone 
+FROM bd_employees;
+
+UPDATE staff 
+SET department = '60' 
+WHERE id = (
+	SELECT manager_id 
+	FROM employees 
+	WHERE first_name LIKE 'Neena' AND last_name LIKE 'Kochhar');
+	
+SELECT *
+FROM bd_employees
+WHERE LENGTH(REGEXP_REPLACE(first_name, '[^aeiouAEIOU]', '', 'g')) <= 3;
+
+WITH tmp AS (
+	SELECT chr(i+96), i FROM generate_series(1,26) i)
+SELECT e.last_name sum(t.i) AS name_sum
+FROM db_employees e
+JOIN tmp t ON t.chr = ANY(string_to_array(LOWER(e.last_name), NULL))
+GROUP BY e.last_name;
\ No newline at end of file
diff --git a/Practice/SR/sr2.sql b/Practice/SR/sr2.sql
new file mode 100644
index 0000000..e69de29