From 70c2ea553381d05849cb9b840564c2d2066733d0 Mon Sep 17 00:00:00 2001 From: PedroRajao Date: Tue, 23 Sep 2014 09:43:45 -0300 Subject: [PATCH 1/2] Update 8_using_null.sql --- 8_using_null.sql | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/8_using_null.sql b/8_using_null.sql index 939c9eb..eba3347 100644 --- a/8_using_null.sql +++ b/8_using_null.sql @@ -24,8 +24,10 @@ SELECT name, COALESCE(mobile, '07986 444 2266') -- # 6. Use the COALESCE function and a LEFT JOIN to print the name and -- #department name. Use the string 'None' where there is no -- #department. -SELECT name, COALESCE(dept, 'None') - FROM teacher; +SELECT teacher.name, COALESCE(dept.name,'None') + FROM teacher LEFT JOIN dept + ON teacher.dept=dept.id + -- # 7. Use COUNT to show the number of teachers and the number of -- #mobile phones. @@ -62,4 +64,4 @@ SELECT teacher.name, THEN 'Art' ELSE 'None' END -FROM teacher; \ No newline at end of file +FROM teacher; From 8d3a72f491e20af57d2b5b3c0949902ba5e1f480 Mon Sep 17 00:00:00 2001 From: PedroRajao Date: Tue, 23 Sep 2014 09:44:22 -0300 Subject: [PATCH 2/2] Update 8_using_null.sql --- 8_using_null.sql | 1 - 1 file changed, 1 deletion(-) diff --git a/8_using_null.sql b/8_using_null.sql index eba3347..ded1dde 100644 --- a/8_using_null.sql +++ b/8_using_null.sql @@ -28,7 +28,6 @@ SELECT teacher.name, COALESCE(dept.name,'None') FROM teacher LEFT JOIN dept ON teacher.dept=dept.id - -- # 7. Use COUNT to show the number of teachers and the number of -- #mobile phones. SELECT COUNT(name), COUNT(mobile)