HP Neoview SQL Reference Manual page 159

SECRETARY
...
• Select from three tables, group the rows by job code and (within job code) by department
number, and order the groups by the maximum salary of each group:
SELECT E.jobcode, E.deptnum, MIN (salary), MAX (salary)
FROM persnl.employee E,
persnl.dept D, persnl.job J
WHERE E.deptnum = D.deptnum AND E.jobcode = J.jobcode
AND E.jobcode IN (900, 300, 420)
GROUP BY E.jobcode, E.deptnum
ORDER BY 4;
JOBCODE DEPTNUM
------- -------
900 1500
900 2500
...
300 3000
900 2000
...
300 3200
420 4000
...
--- 16 row(s) selected.
Only job codes 300, 420, and 900 are selected. The minimum and maximum salary for the
same job in each department are computed, and the rows are ordered by maximum salary.
• Select from two tables that have been joined by using an INNER JOIN on matching part
numbers:
SELECT OD.*, P.*
FROM sales.odetail OD INNER JOIN sales.parts P
ON OD.partnum = P.partnum;
Order/Num Part/Num
---------- --------
------------------
400410 212
PCSILVER, 20 MB
500450 212
PCSILVER, 20 MB
100210 244
PCGOLD, 30 MB
800660 244
PCGOLD, 30 MB
... ...
...
--- 72 row(s) selected.
• Select from three tables and display them in employee number order. Two tables are joined
by using a LEFT JOIN on matching department numbers, then an additional table is joined
on matching jobcodes:
SELECT empnum, first_name, last_name, deptname, location, jobdesc
FROM employee e LEFT JOIN dept d ON e.deptnum = d.deptnum
LEFT JOIN job j ON e.jobcode = j.jobcode
ORDER BY empnum;
• Suppose that the JOB_CORPORATE table has been created from the JOB table by using the
CREATE LIKE statement. Form the union of these two tables:
SELECT * FROM job UNION SELECT * FROM job_corporate;
JOHN
(EXPR) (EXPR)
----------- -----------
17000.00
18000.00
19000.00
32000.00
22000.00
18000.10
Unit/Price Qty/Ord Part/Num
------------ ----------
------------ -----------
2450.00 12
2500.00 3525
2500.00
2500.00 3525
3500.00
3000.00 4426
3000.00
3000.00 4426
... ...
... ...
CHOU 28000.00
17000.00
18000.00
32000.00
32000.00
33000.10
36000.00
Part Description
--------
212
8 212
3 244
6 244
...
PRICE Qty/Avail
SELECT Statement 159