From StephenAndert@firsthealth.com Tue, 21 Aug 2001 10:36:18 -0700 From: "Stephen Andert" Date: Tue, 21 Aug 2001 10:36:18 -0700 Subject: Re: How do they get the answer? Message-ID: MIME-Version: 1.0 Content-Type: text/plain 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>>> kjanusz@att.net 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?        TypeID                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 taughtby 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: kjanusz@att.netFat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051San Diego, California        -- Public Internet access / Mailing Lists--------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail messageto: ListGuru@fatcity.com (note EXACT spelling of 'ListGuru') and inthe message BODY, include a line containing: UNSUB ORACLE-L(or the name of mailing list you want to be removed from).  You mayalso send the HELP command for other information (like subscribing).