Proc SQL in SAS Enterprise Guide 4.3

PROC SQL IN SAS ENTERPRISE GUIDE 4.3Mark TabladilloDecember 12, 2011

About MarkTab Consultant: Data Mining Architect

SAS since 1991 Microsoft MVP this year Presenting and Publishing since 1998

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Purpose Provide basic vocabulary and pointers

for absolute beginners Challenge intermediate-to-advanced

Outline Basics on Enterprise Guide 4.3 PROC SQL

SQL Clauses Order of Operations – Best Practices Joins – Best Practices Macro variables

BASICS ON SAS ENTERPRISE GUIDE 4.3

About SAS Enterprise Guide 4.3 Shipped July 2011 New features include

New Program Editor with Autocomplete and Integrated Syntax Help

Explicit SQL Pass-through Option Macro Variables for Conditional

Processinghttp://support.sas.com/documentation/cdl/en/whatsnew/62580/HTML/default/viewer.htm#egwhatsnew43.htm

SAS Enterprise Guide 4.3 Tutorial http://support.sas.com/documentation/onlinedoc/guide/tut4

Tutorial Topics

Enterprise Guide is Client Software

SAS EnterpriseGuide

SASon Windows

SASon Mainframe

SASon UNIX

Results

The SAS Intelligence Platform Architecture

Enterprise Guide is fully integrated with the servers in the SAS 9 environment.

SAS Enterprise Guide

SAS Workspace Server

SAS Stored Process Server

SAS OLAP Server

SAS Metadata Server

PROC SQLSQL Clauses

Important in Enterprise Guide

Autocompletion

Typical SQL Statement – Six Clauses

SELECT column-1 <, ...column-n>FROM table-1|view-1<, ...table-n|view-n><WHERE expression><GROUP BY column-1 <, ....column-n>><HAVING expression><ORDER BY column-1 <DESC><, ...

Column-n>>;quit;

How many clauses are required?SELECT column-1 <, ...column-n>

FROM table-1|view-1<, ...table-n|view-n><WHERE expression><GROUP BY column-1 <, ....column-n>><HAVING expression><ORDER BY column-1 <DESC><, ...

Column-n>>;quit;

What is an example of a column?

Column-n>>;quit;

What is an example of a table?SELECT column-1 <, ...column-n>

Column-n>>;quit;

What is an example of an expression?

Column-n>>;quit;

What does DESC mean?SELECT column-1 <, ...column-n>

Column-n>>;quit;

MnemonicSELECT column-1 <, ...column-n>

FROM table-1|view-1<, ...table-n|view-n>

<ORDER BY column-1 <DESC><, ... Column-n>>;quit;

SOFEWWORKERSGOHOMEON time!

PROC SQLOrder of Operations – Best Practices

Order of Operations SQL is a declarative language

You declare the final product Then, the SQL interpreter decides how to

create that final product

Why try for one SELECT statement?

SQL is a declarative language You declare the final product Then, the SQL interpreter decides how to

create that final product

Order of OperationsSELECT column-1 <, ...column-n>

Column-n>>;quit;

Best Practices?SELECT column-1 <, ...column-n>

Column-n>>;quit;

PROC SQLJoins – Best Practices

JoinsType DescriptionLEFT JOIN One to ManyRIGHT JOIN Many to OneFULL JOIN Many to Many, with MissingCROSS JOIN ProductUNION JOIN ConcatenationNATURAL JOIN Conservative Matching

Recommended:Sams Teach Yourself SQL in 10 Minutes (3rd Edition) by Ben FortaReference:http://support.sas.com/documentation/cdl/en/proc/61895/HTML/default/viewer.htm#a002473691.htm

Think Through Join Sources SAS can join

SAS Excel Access Oracle Mainframe Text Files

Best Practice Rules Typed data is better than non-typed Subset better than the whole Native SQL better than SAS SQL In-memory data is faster than disk data Close to the server is better than far

away – subset before moving SAS sources are better than not

PROC SQLMacro Variables

PROC SQL Makes Macro Variables

SELECT column-1 <, ...column-n>INTO macro-variable-specification

< , ... macro-variable-specification>FROM table-1|view-1<, ...table-n|view-n><WHERE expression><GROUP BY column-1 <, ....column-n>><HAVING expression><ORDER BY column-1 <DESC><, ...

Column-n>>;quit;

What is a Macro Variable? Text Variable Stores Information in Memory Typically scoped to Global Dynamically Generated

Useful as a prequel to a PROC SQL statement

Useful as an Enterprise Guide 4.3 Condition

Macro Variables as Conditions

Defining a Macro Condition

Process Flow Conditions

Recommended http://support.sas.com Books

Sams Teach Yourself SQL in 10 Minutes (3rd Edition) by Ben Forta

The Little SAS Book for Enterprise Guide 4.2 by Susan J. Slaughter and Lora D. Delwiche

Professional SAS Programmer's Pocket Reference Sixth Edition by Rick Aster

Conclusion Enterprise Guide 4.3 allows for simple

through advanced processing with PROC SQL

Many resources available: Free SAS tutorials Books People

Proc SQL in SAS Enterprise Guide 4.3

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