BeCertify C2090-730 Questions
Question :
Which of the following statements eliminates all but one of each set of duplicate rows in the DEPT column in the STAFF table?
- SELECT UNIQUE dept FROM staff
- SELECT DISTINCT dept FROM staff
- SELECT (dept) UNIQUE FROM staff
- SELECT (dept) DISTINCT FROM staff
Question :
Given the following table definitions:
EMPLOYEE
ID NAME DEPTID
-- ------ ---------
01 Smith 10
02 Bossy 20
03 Peterson 20
04 Goss 30
05 Pape 40
06 Avery 50
07 O'Neal 60
08 Carter 50
DEPARTMENT
ID DEPTNAME
-- --------------
05 Hardware
10 Kitchen
20 Shoes
30 Toys
40 Electronics
50 Automotive
and the following query:
SELECT e.id, d.deptname
FROM employee e, department d
WHERE e.deptid = d.id AND e.id > 4
Which of the following queries will produce the same result set as the query above?
- SELECT e.id, d.deptname FROM employee e, department d WHERE e.id > 4
- SELECT e.id, d.deptname FROM employee e INNER JOIN department d ON e.deptid = d.id WHERE e.id > 4
- SELECT e.id, d.deptname FROM employee e FULL OUTER JOIN department d ON e.id = d.id WHERE e.id > 4
- SELECT e.id, d.deptname FROM employee e LEFT OUTER JOIN department d ON e.deptid = d.id WHERE e.id > 4 UNION ALL SELECT e.id, d.deptname FROM employee e RIGHT OUTER JOIN department d ON e.deptid = d.id WHERE e.id > 4
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