From 07e6e07de14f3baee1a445e41ff7293783c7d893 Mon Sep 17 00:00:00 2001 From: AdityaTharunJ Date: Tue, 26 May 2026 20:19:51 +0530 Subject: [PATCH] Refactor SQL queries to select distinct values Updated SQL queries to use DISTINCT for unique results. --- SQL Deep Dive/Distinct/questions.sql | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/SQL Deep Dive/Distinct/questions.sql b/SQL Deep Dive/Distinct/questions.sql index 1ae66a7..702687d 100644 --- a/SQL Deep Dive/Distinct/questions.sql +++ b/SQL Deep Dive/Distinct/questions.sql @@ -4,7 +4,7 @@ * Question: What unique titles do we have? */ -SELECT * FROM titles; +SELECT DISTINCT(title) FROM titles; /* @@ -13,7 +13,7 @@ SELECT * FROM titles; * Question: How many unique birth dates are there? */ -SELECT * FROM employees; +SELECT DISTINCT(birth_date) FROM employees; /* * DB: World @@ -22,5 +22,5 @@ SELECT * FROM employees; * Make sure there are no nulls */ -SELECT * FROM country; +SELECT DISTINCT lifeexpectancy FROM country WHERE lifeexpectancy IS NOT NULL ORDER BY lifeexpectancy;