Issues

• SUM and COUNT 1, 8

  jisaw/sqlzoo-solutions#50 · Filter by author x247Shufflingx opened on Aug 5, 2026

• FULL OUTER JOIN bug in join #13

  jisaw/sqlzoo-solutions#49 · Filter by author PierreBullot opened on Oct 14, 2025

• little issue

  jisaw/sqlzoo-solutions#41 · Filter by author Nuung opened on Oct 26, 2022

• Question 14 nobel

  jisaw/sqlzoo-solutions#39 · Filter by author therealjjz opened on Apr 16, 2022
  3

• Error 3° SQL

  jisaw/sqlzoo-solutions#33 · Filter by author AleTinti opened on Apr 17, 2021

• sqlzoo-solutions/join.sql , Question 13

  jisaw/sqlzoo-solutions#26 · Filter by author maz369 opened on Jun 7, 2020
  1

• Solutions available by adding ?answer=1 to sqlzoo.net URLs

  jisaw/sqlzoo-solutions#25 · Filter by author nicolas-raoul opened on Jul 4, 2019

• JOIN #13 Query missing one part

  jisaw/sqlzoo-solutions#23 · Filter by author LiuqianZhang opened on Aug 11, 2018

• SELECT in SELECT - Q6

  jisaw/sqlzoo-solutions#20 · Filter by author edblayney opened on Feb 5, 2018

• Update more JOIN operations 14#

  jisaw/sqlzoo-solutions#19 · Filter by author aaarr21 opened on Jan 26, 2018

• Non-grouping field 'visits' is used in HAVING clause ERROR #4

  jisaw/sqlzoo-solutions#16 · Filter by author hackerDEpandas opened on Jun 15, 2017

• SELECT with SELECT Exercise 5 is incorrect

  jisaw/sqlzoo-solutions#11 · Filter by author Etabat opened on Feb 23, 2017

• No explanation of ordering in self-join Q10

  jisaw/sqlzoo-solutions#7 · Filter by author ddickstein opened on Dec 14, 2016

• noble-quiz

  jisaw/sqlzoo-solutions#5 · Filter by author divo93 opened on Sep 30, 2016
  1

• there is a a part missing in this query

  jisaw/sqlzoo-solutions#4 · Filter by author divo93 opened on Sep 30, 2016