Indexes
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Viewing indexes syntax:
SELECT object_name FROM user_objects WHERE object_type = 'INDEX';
Create an index syntax:
CREATE [UNIQUE|BITMAPPED] INDEX indexname ON tablename (column|col_expression [,column|col_expression]...) [PCTFREE integer] [TABLESPACE tablespacename|DEFAULT] [STORAGE ([INITIAL integer [K|M]] [NEXT integer [K|M]])] [ONLINE]
Composite Indexes
Building indexes based on multiple columns.