Table of Contents
Advertisement
DISK POOL
considerations for, 92
description for, 75
examples of, 93
restrictions for, 92
DISTINCT clause
aggregate functions, 175, 337
AVG function use of, 351
COUNT function use of, 371
MAX function use of, 419
MAXIMUM function use of, 419
MIN function use of, 420
STDDEV function use of, 469
SUM function use of, 473
VARIANCE function use of, 485
DML statements (see Data Manipulation Language (DML)
statements)
Documents, related information, 22
DOUBLE PRECISION data type, 254
DROP INDEX statement
authorization and availability requirements, 113
considerations for, 113
example of, 113
syntax diagram of, 113
DROP MATERIALIZED VIEW statement
example of, 114
syntax diagram of, 114
DROP MVGROUP statement
example of, 115
syntax diagram of, 115
DROP SCHEMA statement
authorization and availability requirements, 116
considerations for, 116
example of, 116
syntax diagram of, 116
DROP SYNONYM statement
considerations for, 117
example of, 117
syntax diagram of, 117
DROP TABLE statement
authorization and availability requirements, 118
considerations for, 118
examples of, 118
syntax diagram of, 118
DROP TRIGGER statement
authorization requirements, 119
considerations for, 119
example of, 119
syntax diagram of, 119
DROP VIEW statement
authorization and availability requirements, 120
considerations for, 120
example of, 120
syntax diagram of, 120
DROP VOLATILE INDEX statement
examples of, 113
syntax diagram of, 113
DROP VOLATILE TABLE statement
authorization requirements, 118
540
Index
examples of, 118
syntax diagram of, 118
E
Embedded INSERT
examples of, 183
restrictions on, 174
Error messages, 35
EST_TOTAL_COST field, 128
EXCLUSIVE lock mode, 27
EXECUTE statement
considerations for, 122
examples of, 122
scope of, 122
syntax diagram of, 121
EXISTS predicate
correlated subquery within, 291
examples of, 291
syntax diagram of, 291
EXP function
examples of, 400
syntax diagram of, 400
EXPLAIN function
columns in result, 402
examples of, 403
operator tree, 402
plan in running query, 401
syntax diagram of, 401
EXPLAIN output columns
CARDINALITY, 130
DESCRIPTION, 131
DETAIL_COST, 131
EST_TOTAL_COST, 128
LEFT_CHILD_SEQ_ NUM, 130
MODULE_NAME, 130
OPERATOR, 130
OPERATOR_COST, 130
PLAN_ID, 130
REQUESTS_IN, 127
RIGHT_CHILD_ SEQ_NUM, 130
ROWS_OUT, 127
SEQ_NUM, 130
STATEMENT_NAME, 130
TNAME, 130
TOTAL_COST, 130
Explain statement
displayed, 124
examples of, 126, 127, 128, 131
JDBC example, 132
ODBC example, 132
operators, 124
OPTIONS 'e' considerations, 128
OPTIONS 'f' considerations, 125
OPTIONS 'm' considerations, 130
OPTIONS 'n' considerations, 126
output, 126
plan in running query, 125
reviewing query execution plans, 124
syntax, 124
Advertisement
Table of Contents
