Executes child operations for a single partition in the table
This operation was introduced in Oracle 8.1.5 replacing PARTITION (SINGLE)
This operation is implemented in the following versions
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This example was developed using Oracle 9.2.0.1 on Windows 2000
This example requires the following table definition
CREATE TABLE t1 (c1 NUMBER,c2 NUMBER) PARTITION BY RANGE (c1) ( PARTITION p1 VALUES LESS THAN (10), PARTITION p2 VALUES LESS THAN (20), PARTITION p3 VALUES LESS THAN (30), PARTITION p4 VALUES LESS THAN (40) );
The table does not need to be analysed
The statement
SELECT c1 FROM t1 WHERE c1 = ( SELECT MIN (c1) FROM t1 );
generates the following execution plan
0 SELECT STATEMENT Optimizer=CHOOSE 1 0 PARTITION RANGE (SINGLE) 2 1 TABLE ACCESS (FULL) OF 'T1' 3 2 SORT (AGGREGATE) 4 3 PARTITION RANGE (ALL) 5 4 TABLE ACCESS (FULL) OF 'T1'