Re: How do they get the answer?

[Stephen Andert]

Well,   to me it looks like     WHERE        subject_id IN (102, 105); will select 2 classes. Since there are a minimum of 2 teachers per class, this will select at least 4 teachers.    Am I missing something?   Stephen >>> [EMAIL PROTECTED] 08/21/01 09:25AM >>> I am taking the Self-Test software test for the SQL exam and don't see how they get the answer to this problem.  They don't explain how it is arrived at. Any help you can give me will be appreciated. Thanks, Ken Janusz, CPIM ---------------------------------- Examine the structure of the TEACHER table: Name                Null?        Type ID                NOT NULL    NUMBER(9) SALARY                        NUMBER (7,2) SUBJECT_ID            NOT NULL    NUMBER(3) SUBJECT_DESCRIPTION            VARCHAR2(2) There are 200 teachers and 15 subjects.  Each subject is taught by at least 2 teachers. Evaluate this PL/SQL block: DECLARE     v_pct_raise        number := 1.10; BEGIN     UPDATE        teacher     SET        salary = salary * 1.10     WHERE        subject_id IN (102, 105);     COMMIT; END; Which result will the PL/SQL block provide? (A) Only two teachers will receive a 10% salary increase. (B) All of the teachers will receive a 10% salary increase. (C) At least four teachers will receive a 10% salary increase. (D) A syntax error will occur. Answer: (C) -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author:   INET: [EMAIL PROTECTED] Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051 San Diego, California        -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from).  You may also send the HELP command for other information (like subscribing).