Difference between revisions of "YSL"

From CDOT Wiki
Jump to: navigation, search
 
(14 intermediate revisions by 3 users not shown)
Line 1: Line 1:
 
+
{{db-g7}}
This page is to efficiently manage our group assignments!
 
== Member List ==
 
*[mailto:yjeong@learn.senecac.on.ca,?subject=dbs501,symoon@learn.senecac.on.ca,?subject=dbs501,lzhou@learn.senecac.on.ca,?subject=dbs501 Email All]
 
 
 
{| class="wikitable sortable" border="1" cellpadding="5"
 
! First Name !! Last Name !! wiki id !! Learn e-mail  !! Phone
 
|-
 
|[[User:yjeong | YuJin]]||Jeong||[[Special:Contributions/yujin.jeong | yujin.jeong]]||[mailto:yjeong@learn.senecac.on.ca?sujbect=dbs301 yjeong]|| 647 - 863 - 5555
 
|-
 
 
 
|-
 
|Seung Yeon||Moon || - ||[mailto:symoon@learn.senecac.on.ca?subject=dbs501 symoon] ||(647) 678 - 6511
 
|-
 
 
 
|-
 
|Li Shi|| Zhou || - || [mailto:lzhou@learn.senecac.on.ca?subject=dbs501 lzhou] || (416) 887 - 6758
 
|-
 
|}
 
=Assignment 1 (worth 10%)=
 
 
 
 
 
==Due Date==
 
Friday, October 21st, X:XXpm
 
Printout submission only( SELECT Statements + ALL outputs)
 
 
 
 
 
==Description==
 
[https://cs.senecac.on.ca/~nconkic/as1.doc Assignment1]
 
 
 
 
 
==Solution - Example ==
 
 
 
 
 
===1.===
 
''YuJin''
 
<pre>
 
SELECT    department_id, department_name,
 
          RPAD(TRIM(NVL(city, 'Not Assinged Yet')), 25, ' ') "City",
 
          COUNT(DISTINCT job_id) "# of Jobs"
 
FROM      employees
 
RIGHT OUTER JOIN  departments USING (department_id)
 
LEFT  OUTER JOIN  locations  USING (location_id)
 
GROUP BY  department_id, department_name, city;
 
 
 
</pre>
 
''Seung Yeon''
 
<pre>
 
SELECT department_id, department_name, SUBSTR(NVL(city,'Not Assigned Yet'),1,25) City,
 
        COUNT(DISTINCT job_id) "# of Jobs"
 
FROM locations l RIGHT OUTER JOIN departments d
 
USING (location_id)
 
LEFT OUTER JOIN employees e
 
USING (department_id)
 
GROUP BY  department_id, department_name, city
 
/
 
</pre>
 
''Li Shi''
 
<pre>
 
select department_id, department_name, substr(nvl(city,'Not Assigned Yet'),1,25) City,
 
count(distinct job_id) "# of Jobs"
 
from employees right outer join departments
 
using (department_id)
 
left outer join locations
 
using (location_id)
 
group by department_id, department_name, city
 
</pre>
 
 
 
''FINAL''
 
<pre>
 
SELECT    department_id, department_name,
 
          SUBSTR(NVL(city, 'Not Assinged Yet'),1, 25) "City",
 
          COUNT(DISTINCT job_id) "# of Jobs"
 
FROM      employees
 
RIGHT OUTER JOIN  departments USING (department_id)
 
LEFT  OUTER JOIN  locations  USING (location_id)
 
GROUP BY  department_id, department_name, city;
 
 
 
</pre>
 
 
 
 
 
 
 
 
 
 
 
=Assignment 2 (worth 10%)=
 
==Due Date==
 
Friday, December 2nd, X:XXpm
 
 
 
==Description==
 
[https://cs.senecac.on.ca/~nconkic/as2.doc Assignment2]
 
 
 
==Solution==
 

Latest revision as of 14:27, 16 October 2011