Accesses row in clustered tables based on hashed cluster key
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 CLUSTER cl1 (c1 NUMBER) HASHKEYS 100; CREATE TABLE t1 (c1 NUMBER,c2 NUMBER) CLUSTER cl1 (c1);
The table does not need to be analysed
The statement
SELECT c2 FROM t1 WHERE c1 = 0;
generates the following execution plan
0 SELECT STATEMENT Optimizer=CHOOSE 1 0 TABLE ACCESS (HASH) OF 'T1'