diff --git a/aharlamcev/postgresql/Filtrationhomework.sql b/aharlamcev/postgresql/Filtrationhomework.sql
new file mode 100644
index 0000000..b8d9407
--- /dev/null
+++ b/aharlamcev/postgresql/Filtrationhomework.sql
@@ -0,0 +1,22 @@
+select * from products
+
+select name, category, price, price * 1.3 as price_with_markup, price * 1.5 as price_with_vat
+from products 
+where in_stock is true and category != 'smartwatch' and price between 100 and 1300;
+
+select name, price, price * 0.85 as price_with_discount
+from products 
+where price < 100 or price > 1000;
+
+select id, name, category, price from products 
+where category in ('tablet', 'smartphone', 'mouse') and price > 100;
+
+select name, category, price from products
+where name not ilike '%iphone%';
+
+select name, category, price from products
+where name ilike '%pro%';
+
+select name, category, price from products
+where name ilike '%mx%'
+order by price desc;
\ No newline at end of file