Converts bitmaps into key values and ROWIDS
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 and index definitions
CREATE TABLE t1 (c1 NUMBER,c2 NUMBER); CREATE BITMAP INDEX i1 ON t1 (c1);
The table does not need to be analysed.
The statement
SELECT /*+ INDEX (t1 i1) */ ROWID FROM t1;
generates the following execution plan
0 SELECT STATEMENT Optimizer=CHOOSE 1 0 BITMAP CONVERSION (TO ROWIDS) 2 1 BITMAP INDEX (FULL SCAN) OF 'I1'