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Minor change #1

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70c2ea5
Update 8_using_null.sql
PedroRajao Sep 23, 2014
8d3a72f
Update 8_using_null.sql
PedroRajao Sep 23, 2014
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7 changes: 4 additions & 3 deletions 8_using_null.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -24,8 +24,9 @@ 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.
Expand Down Expand Up @@ -62,4 +63,4 @@ SELECT teacher.name,
THEN 'Art'
ELSE 'None'
END
FROM teacher;
FROM teacher;