NonStop SQL/MP Reference Manual

Table Of Contents
NonStop SQL/MP Reference Manual142115
S-29
Examples—SELECT
1. Join the tables.
EMPLOYEE Table JOB Table
EMPNUM ... JOBCODE ... SALARY JOBCODE JOBDESC
1 100 175500 100 MANAGER
1 100 175500 200 PROD SUPV
. .
1 100 175500 900 SECRETARY
568 300 39500 100 MANAGER
568 300 39500 200 PROD SUPV
568 300 39500 900 MANAGER
2. Drop rows with unequal job codes.
EMPLOYEE Table JOB Table
EMPNUM ... JOBCODE ... SALARY JOBCODE JOBDESC
1 100 175500 100 MANAGER
. . .
207 420 33000 420 ENGINEER
. . .
568 300 39500 300 SALESREP
3. Drop rows with job codes not 900, 300 or 420.
EMPLOYEE Table JOB Table
EMPNUM ... JOBCODE ... SALARY JOBCODE JOBDESC
75 300 32000 300 SALESREP
. . .
178 900 28000 900 SECRETARY
. . .
207 420 33000 420 ENGINEER
. . .
568 300 39500 300 SALESREP