Executes child operations for each partition in the table specified by the iterator
This operation was introduced in Oracle 8.1.5
This operation is implemented in the following versions
|
This example was developed using Oracle 9.2.0.1 on Windows 2000
This example requires the following table and index definitions
CREATE TABLE t1 (c1 NUMBER,c2 NUMBER) PARTITION BY HASH (c1) PARTITIONS 4; CREATE INDEX i1 ON t1 (c1) LOCAL;
The table does not need to be analysed
The statement
SELECT c2 FROM t1 WHERE c1 IN (10,20,30);
generates the following execution plan
0 SELECT STATEMENT Optimizer=CHOOSE 1 0 INLIST ITERATOR 2 1 PARTITION HASH (ITERATOR) 3 2 TABLE ACCESS (BY LOCAL INDEX ROWID) OF 'T1' 4 3 INDEX (RANGE SCAN) OF 'I1' (NON-UNIQUE)