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/***********************************************/
/* Author: Nicholas Reeves */
/* Title: Assignment 13 */
/* created on: April 25, 2015 */
/* Purpose: To complete Assignment 13 */
/* Last successful run: April 30, 2015 */
/***********************************************/
ods _all_ close;
filename hw_out 'C:\Users\nick\Documents\MS Stats\657\Assignments\HW13\nlreeves13_HW13_output';
libname dta 'C:\Users\nick\Documents\MS Stats\657\Assignments\data';
libname orion 'C:\Users\nick\Documents\MS Stats\657\SQL\SQL Files' access=readonly;
options MLogic symbolgen mprint nonumber msglevel=I nodate;
/* 1. Use mbb04 dataset as source to create a format*/
/* a. Convert commands from p307d01 to SQL to create*/
/* a similar dataset from mbb04. Use SQL instead of */
/* data step because need distinct values in data set*/
/* for format.*/
proc sql; /*lecture 21 page 57*/
create table seedy
(start char(18), label char, fmtname char); /* add columns to a table*/
insert into seedy
/*populate new columns*/
/* b. The start value of format will come from the Team column*/
(start,label,fmtname)
/* c. Use seed_ as label in format. Labels are text but seed_ field*/
/* is numeric. Use put function to convert number to text. */
/* d. Give new format a name*/
select distinct team, put(seed_,2.), '$SEEDY'
from dta.mbb04
;
/* e. After creating new dataset, use SQL to insert a row at end. */
/* Values of start='other', label='NA', and name of format.*/
insert into seedy
set start='other',label='NA', fmtname='$SEEDY'
;
quit;
/* f. Use format procedure to create from this dataset a user defined format*/
/* in the work library.*/
proc format library=work.myfmts /* without library= it would still go to work.myfmts*/
cntlin=seedy;
select $seedy;
run;
/* g. Use the format procedure to write the contents of the new format out*/
/* to your output document. This output only displays first 16 characters,*/
/* this is OK.*/
ods pdf file= hw_out bookmarklist=no;
proc format library=work.myfmts /* without library= it would still go to work.myfmts*/
cntlin=seedy fmtlib;
select $seedy;
run;
/* 2. Create a picture format that can be applied to RPG field. Allow space*/
/* for RPG to be displayed as two digits along with a single decimal (00.0).*/
/* a. Values of 6.1 or more will be in parenthesis preceded by the word High*/
proc format;
picture rpglev
6.1-high=' 09.9)'
(prefix='High(')
/* b. values of 3.5 or more but less than 6.1 preceded by Med*/
3.5-<6.1=' 09.9)'
(prefix='Med(')
/* c. Values under 3.5 are preceded by the word Low*/
low-<3.5=' 09.9)'
(prefix='Low(');
run;
/* 3. Use a SAS Procedure to place a copy of the mbb06 dataset in WORK library.*/
/* All future references to mbb06 will be to WORK copy.*/
proc sql;
create table mbb06 as
select*
from dta.mbb06;
;
/* 4. Use SQL statements to make the following modifications to mbb06 dataset*/
/* a. Create a character column labeled RPG Rating. Wide enough to accept*/
/* all values of picture format*/
options fmtsearch=(work work.myfmts);
proc sql;
alter table mbb06
add rpgrate char(14) label='RPG Rating'
/* b. Create character column with length of 2 labeled 2004 Seeding*/
add seed04 char(2) label='2004 Seeding'
/* c. Change the length and format of the School column so it is wide enough*/
/* to fully display Wisconsin Milwaukee.*/
modify school char(19) format=$19.;
/* d. Populate the RPG Rating field using the put function to create values*/
/* by applying the picture format to the RPG field.*/
update mbb06 /*use update to populate rpgrate*/
set rpgrate=put(rpg,rpglev.)
/* e. Correct the following school names:*/
/* 'Indania' to 'Indiana'
'Boston Coll' to 'Boston College'
'George mason' to 'George Mason'
'Oral Robt-16' to 'Oral Roberts'
'Wisc. Milwaukee' to 'Wisconsin Milwaukee'*/
, school= /*update will also modify existing columns*/
case school
when 'Indania' then 'Indiana'
when 'Boston Coll' then 'Boston College'
when 'George mason' then 'George Mason'
when 'Oral Robt-16' then 'Oral Roberts'
when 'Wisc. Milwaukee' then 'Wisconsin Milwaukee'
else school
end
/* f. populate the 2004 Seeding Field using put function to create values by*/
/* applying the format from step 1 to school field*/
, seed04=put(school,$seedy.)
;
quit;
/* 5. Create composite index for mbb06 using the fields player, school,*/
/* and region in that order. Print the descriptor portion of the mbb06 */
/* data set after the index has been created.*/
proc sql;
create index srp
on mbb06 (player,school,region);
quit;
proc contents data=mbb06;
run;
/* 6. Create print procedure that will print the columns shown in the*/
/* sample output from the mbb06 dataset. You need the label option in */
/* order for labels to appear in output. Make 5 copies of the print*/
/* procedure in program. Each copy will be modified with different*/
/* titles, options, and where clauses to demonstrate use of indexes.*/
/* Two of these procedures will generate errors in the log instead*/
/* of producing output. EXPLAIN what happened. Create comment block*/
/* above each section. Write answers to each question, or explanation.*/
/* a. */
/***********************************************************************/
/*Is an index used on this step? Why or why not? Did the most efficient*/
/*action occur? Why or why not? */
/* YES, BECAUSE IDXWHERE=YES WAS USED AND EVEN IF THAT OPTION WAS NOT */
/* USED IT STILL WOULD HAVE BECAUSE SUBSET FROM WHERE REFERS TO THE */
/* INDEX AND SUBSET IS VERY SMALL. YES IT WAS MOST EFFICIENT FOR THE */
/* SAME REASON. */
/***********************************************************************/
proc print data=mbb06 (idxwhere=yes) label;
where player in ('Rudy Gay', 'Al Horford', 'Frank Young');
var player school region seed rpgrate seed04;
title '6a. IDXWHERE on Player';
run;
/* b. */
/************************************************************************/
/* Explain the results of this step. */
/* NO INDEX EXISTS THAT WILL OPTIMIZE THIS WHERE CLAUSE, PROCEDURE DID */
/* NOT SUCCESSFULLY PRINT AND ERROR WAS PRINTED TO LOG. EVEN THOUGH */
/* IDXWHERE=YES IS USED, SINCE THE INDEX IS COMPOSITE AND USING SCHOOL */
/* IN WHERE CLAUSE THE INDEX WOULD NOT WORK. */
/************************************************************************/
proc print data=mbb06 (idxwhere=yes) label;
where school='Connecticut';
var player school region seed rpgrate seed04;
title '6b. IDXWHERE on School';
run;
/* c. */
/************************************************************************/
/* Explain the results of this step. */
/* PRINT PROCEDURE WAS NOT SUCCESSFUL AND DID NOT PRINT BECAUSE THERE */
/* IS NOT AN INDEX TITLED SCHOOL */
/************************************************************************/
proc print data=mbb06 (idxname=school) label;
where school='Connecticut';
var player school region seed rpgrate seed04;
title '6c. IDXNAME on School';
run;
/* d.*/
/************************************************************************/
/* Explain the usage of an index on this step. */
/* PRINT SUCCESS, BUT AN INDEX WAS NOT USED BECAUSE WHERE CLAUSE USED */
/* A 'OR' FOR A COMPOSITE INDEX */
/************************************************************************/
proc print data=mbb06 (idxwhere=yes) label;
where player in ('Rudy Gay', 'Al Horford', 'Frank Young') or
school='Texas';
var player school region seed rpgrate seed04;
title '6d. IDXWHERE on Player or School';
run;
/* e. */
/***********************************************************************/
/* Explain the difference in index usage between this step and the */
/* previous step. */
/* PRINT SUCCESS, AND SAS USED AN INDEX FOR THIS PROCEDURE BECAUSE */
/* WHERE CLAUSE OPERATORS THAT WORK WITH USING AN COMPOSITE INDEX WERE */
/* USED, MORE SPECIFICALLY 'AND' OPERATOR INSTEAD OF THE 'OR' OPERATOR */
/* AS PART D. USED. */
/***********************************************************************/
proc print data=mbb06 (idxwhere=yes) label;
where substr(player,1,1)='S' and
school in ('Duke', 'Memphis', 'Iona', 'Kansas', 'Gonzaga');
var player school region seed rpgrate seed04;
title '6e. IDXWHERE on Player and School';
run;
ods _all_ close;
title;
footnote;
