From 0d12df957281f56648122b8defbb905626482202 Mon Sep 17 00:00:00 2001
From: Aysat <aysat.bakytbek@gmail.com>
Date: Wed, 26 Nov 2025 12:11:48 +0600
Subject: [PATCH] =?UTF-8?q?=D0=AD=D1=82=D0=BE=201=20=D0=B7=D0=B0=D0=B4?=
 =?UTF-8?q?=D0=B0=D1=87=D0=B0=20=D0=BD=D0=B0=20sql,=20=D0=BD=D0=B5=20?=
 =?UTF-8?q?=D1=82=D0=BE=D1=82=20=D0=B2=D1=8B=D0=B2=D0=BE=D0=B4?=
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---
 aysat/lifecoding/SQL1.sql | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 aysat/lifecoding/SQL1.sql

diff --git a/aysat/lifecoding/SQL1.sql b/aysat/lifecoding/SQL1.sql
new file mode 100644
index 0000000..667bc05
--- /dev/null
+++ b/aysat/lifecoding/SQL1.sql
@@ -0,0 +1,19 @@
+with cte1 as (
+select count(distinct(user_id)) as mau,
+date_trunc('month', date) as month
+from abakhytbekuly.users
+group by date_trunc('month', date)
+),
+cte2 as (
+select mau,
+month,
+lag(mau) over(order by month) as prev_mau
+from cte1
+)
+select mau, 
+month,
+prev_mau,
+100.0 * (mau - prev_mau) / prev_mau as pct_change
+from cte2   
+order by month
+