[PDF] [PDF] SAS Certification Handout - Math Usu

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Proc SQL's DESCRIBE TABLE statement writes, to the SAS log, structural information on the requested table The statement's syntax is listed below DESCRIBE TABLE table-name; Note that the DESCRIBE TABLE statement's output is written as a valid SQL CREATE TABLE statement

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PROC SQL, like a SAS DATA step, is often used to create new tables, and this is done using the CREATE keyword CREATE TABLE creates a data set and CREATE VIEW creates a view

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proc sql; create table new_SAS_dataset as /* select * for all columns/variables */ select column_1, column_2 from some_existing_dataset; quit; • Although it says  

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let label=Scores Data Set without A1 and A3; proc sql; create table Scores1( label="&label") as select * from Scores(drop=A1 A3); quit; DROP data set option

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rogation et la gestion de tables SAS à l'aide du langage de requête standard de bases de proc sql; title "Employes anciens"; create table as select from

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which implements the CREATE, INSERT, AND SELECT clauses Creating a Table from Scratch with PROC SQL Suppose you want to create a simple SAS 

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As each situation presents itself, PROC SQL should be examined to see if its clauses used to create each dictionary table can be displayed on the SAS Log

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SAS a créé une procédure appelé le PROC SQL très puissante utilisant une À travers un PROC SQL, nous serons CREATE TABLE BASESORTANTE AS

[PDF] SAS Certification Handout - Math Usu

186-188) */ proc sql; create table work temp1 as select * from cert sales10; quit; /* no output, but LOG: Table WORK TEMP1 created, with 4 rows and 4 columns

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and PROC SQL CREATE TABLE LIKE Among those techniques are the ability to search and select data using SAS functions and operators in the data step 

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SAS Certification Handout #10: Adv. Prog. Ch. 5-8

/************ Ch. 5 ********************/ /* First, make example data same as Handout #9 */ libname cert /* In SAS Studio, after creating SAS_Cert folder with username jrstevens: libname cert '/home/jrstevens/SAS_Cert'; data cert.sales10; format

LastName

$9. Sales dollar8. input LastName $ EmplID Division $ Sales; cards

Smith 315 A 553312

Nelson 333 A 555827

Uribe 612 C 867159

Larson 331 B 521592

Larsen 216 B 123513

Rasmussen 217 A 125321

Knecht 861 B 983152

D'Angelou 772 A 332512

Larson 331 C 381592

/* CREATE TABLE three ways: (1) from query (as before; pp. 186-188) (2) empty table from scratch (pp. 179 181)
(3) empty table LIKE existing table (pp. 183 185)
/* (1) CREATE TABLE from query (pp. 186

188) */

proc sql create table work.temp1 as select from cert.sales10; quit /* no output, but LOG: Table WORK.TEMP1 created, with 4 rows and 4 columns. */ /* (2) CREATE TABLE as empty table from scratch (pp. 179-181) */ proc sql create table work.temp2 (LastName char 9 format $9.

EmplID

num

Division char(1),

Sales num format dollar8. quit /* no output, but LOG: NOTE: Table WORK.TEMP2 created, with 0 rows and 4 columns. 1 /* (3) CREATE TABLE LIKE existing table (pp. 183

185) */

proc sql create table work.temp3 like cert.sales10; quit /* no output, but LOG: NOTE: Table WORK.TEMP3 created, with 0 rows and 4 columns. /* NOTE: To existing (sometimes empty) tables, can later INSERT rows (p. 189) in three ways: (i) SET (by column name; pp. 190 191)
(ii) VALUES (as lists of values; pp. 191 194)
(iii) SELECT (from a query; pp. 194 195)
/* (i) INSERT rows by column name; pp. 190

191 */

proc sql insert into work.temp3 set

LastName=

'Smith' , EmplID= 315
, Division= 'A' , Sales=

553312

quit proc print data =temp3; run /* (ii) INSERT rows by list of values; Note that order of column values need not match order in table */ proc sql insert into work.temp3(LastName, EmplID,

Division, Sales)

values 'Nelson' 333
'A'

555827

values 'Uribe' 612
'C'

867159

quit proc print data =temp3; run /* (iii) INSERT rows from a query */ proc sql insert into work.temp3 select from cert.sales10 where

LastName=

'Knecht' quit proc print data =temp3; run

Obs LastName Sales EmplID Division

1 Smith $553,312 315 A

Obs LastName Sales EmplID Division

1 Smith $553,312 315 A

2 Nelson $555,827 333 A

3 Uribe $867,159 612 C

Obs LastName Sales EmplID Division

1 Smith $553,312 315 A

2 Nelson $555,827 333 A

3 Uribe $867,159 612 C

4 Knecht $983,152 861 B

2 /* pp. 196-202 Integrity constraints preserve data validity:

CHECK, NOT NULL, UNIQUE, FOREIGN KEY,

PRIMARY KEY (both NOT NULL and UNIQUE)

Can also name constraints.

proc sql create table work.temp2

LastName

char 9 format $9. not null

EmplID

num primary key

Division

char 1 check (Division in 'A' 'B' 'C' Sales num format dollar8. constraint pos_sales check (Sales ge 0 quit /* LOG:

NOTE: Table WORK.TEMP2

created, with 0 rows and 4 columns. /* What happens if try to insert bad row? */ proc sql insert into work.temp2 set

LastName=

'Smith' , EmplID= 315
, Division= 'A' , Sales=

553312

set

LastName=

'Nelson' , EmplID= 333
, Division= 'D' , Sales=

555827

quit /* LOG refers to first CHECK failed (Division here) for at least one inserted row, so no rows are inserted. ERROR: Add/Update failed for data set WORK.TEMP2 because data value(s) do not comply with integrity constraint _CK0001_ proc print data =temp2; run /* No output because 0 rows */ /* Force inclusion of valid rows with UNDO_POLICY=NONE (pp. 202 205)
proc sql undo_policy =none; insert into work.temp2 set

LastName=

'Smith' , EmplID= 315
, Division= 'A' , Sales=

553312

set

LastName=

'Nelson' , EmplID= 333
, Division= 'D' , Sales=

555827

quit proc print data =temp2; run

Obs LastName EmplID Division Sales

2 Smith 315 A $553,312

3 /* UPDATE ... SET ... with same expression (pp. 207 210)
(Suppose two employees transferred divisions) */ proc sql create table work.temp4 as select

EmplID, Division

from cert.sales10; proc sql update work.temp4 set

Division =

'B' where

EmplID in (

772
612
quit proc print data =temp4; run /* UPDATE ... SET ... with different expression (pp. 210

216) using

CASE ... WHEN ... THEN ... ... END

This is kind of like SELECT ... END in Base chapter 10, but more flexible. (Suppose all divisions restructured) */ proc sql create table work.temp4 as select

EmplID, Division

from cert.sales10;quotesdbs_dbs17.pdfusesText_23