SAS 9.1 Language Reference Concepts

W

Web applications

functions for 55

WHERE-expression processing 197

WHERE expressions 110, 198

combining with logical operators 207

compound expressions 198

compound optimization 528

constants in 200

creating with VIEWTABLE window 317

efficient expressions 208

functions in 200

operand specification 199

operators in 201

optimizing 527

order of evaluation 208

processing compound expressions 207

processing views 209

segmenting a subset 208

simple expressions 198

syntax 199

variables in 199

vs. subsetting IF statement 211

where to use 198

WHERE processing

comparing resource usage 530

compound optimization 528

controlling index usage 531

displaying indexusage information 531

estimating qualified observations 529

I/O optimization and 216

indentifying available indexes 527

indexes for 527

indexes for, with BY processing 533

indexes with views 532

windowing environment

See SAS windowing environment

words 15

literals 16

name literals 21

names 16

numbers 16

spacing in statements 17

special characters 16

types of 16

variable names 20

WORK library 474

copying files to 307

relation to USER library 474

write protection 587, 592