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You can use the INDEX hint for domain, B-tree, bitmap, and bitmap join indexes. However, Oracle recommends using INDEX_COMBINE rather than INDEX for the combination of multiple indexes, because it is a more versatile hint. index_hint::= Text description of the illustration index_hint.gif
9 Ιουν 2021 · Oracle Index Hint Syntax. INDEX Hint: use the specified index for the related table. If your query is not using the Index, you can use this hint to force using it. You can use the Index hint as follows. select /*+ index(index_name) */ * from table_name;
You can use the INDEX hint for domain, B-tree, bitmap, and bitmap join indexes. However, Oracle recommends using INDEX_COMBINE rather than INDEX for bitmap indexes, because it is a more versatile hint. index_hint::= Text description of the illustration index_hint.gif. where:
3 Δεκ 2009 · The index hint is the key here, but the more up to date way of specifying it is with the column naming method rather than the index naming method. In your case you would use: select /*+ index(table_name (column_having_index)) */ * from table_name where column_having_index="some value";
To specifically instruct the optimizer on index use, you can hint the query as follows: SELECT /*+ INDEX(v.j jhist_employee_ix (employee_id start_date)) */ * FROM v;
The INDEX hint explicitly chooses an index scan for the specified table. The syntax of the INDEX hint is INDEX(table index) where:table specifies the name or alias of the table associated with the index to be scanned and index specifies an index on which an index scan is to be performed.
The INDEX_ASC hint explicitly chooses an index scan for the specified table. If the statement uses an index range scan, Oracle scans the index entries in ascending order of their indexed values. The syntax of the INDEX_ASC hint is: Each parameter serves the same purpose as in the INDEX hint.
