From c12c45bd2d40ea8d329d86715c244923855e4585 Mon Sep 17 00:00:00 2001
From: Matthew Huntington <matt.huntington@gmail.com>
Date: Thu, 19 Oct 2023 18:54:58 -0400
Subject: [PATCH] union

---
 SQL/lessons/.sql_3.md.swp | Bin 12288 -> 12288 bytes
 SQL/lessons/sql_3.md      |   5 +++++
 2 files changed, 5 insertions(+)

diff --git a/SQL/lessons/.sql_3.md.swp b/SQL/lessons/.sql_3.md.swp
index 8cb3a12ce91bfdbb88778e68cce325928369273f..0ba149d2078024f224b8e88ff5458a8c057f8f8f 100644
GIT binary patch
delta 341
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delta 146
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diff --git a/SQL/lessons/sql_3.md b/SQL/lessons/sql_3.md
index 3155af0..3f4961c 100644
--- a/SQL/lessons/sql_3.md
+++ b/SQL/lessons/sql_3.md
@@ -89,6 +89,11 @@ SELECT DISTINCT city FROM people;
 
 ### Unions
 
+```sql
+SELECT name FROM people UNION SELECT name FROM companies; -- show distinct values
+SELECT name FROM people UNION ALL SELECT name FROM companies; -- show duplicates
+```
+
 ### Truncate
 
 ### Triggers