Difference between revisions of "DROP INDEX"
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==Purpose== | ==Purpose== | ||
Removes an index from a table | Removes an index from a table | ||
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==Syntax== | ==Syntax== | ||
DROP INDEX <index> ON <table> | DROP INDEX <index> ON <table> | ||
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==See Also== | ==See Also== | ||
[[ADD TABLE]], [[ALTER INDEX]], [[ALTER TABLE]], [[CREATE INDEX]], [[CREATE TABLE]], [[OPEN DATABASE]] | [[ADD TABLE]], [[ALTER INDEX]], [[ALTER TABLE]], [[CREATE INDEX]], [[CREATE TABLE]], [[OPEN DATABASE]] | ||
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==Description== | ==Description== | ||
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The table must be able to be locked for EXCLUSIVE use during the operation. | The table must be able to be locked for EXCLUSIVE use during the operation. | ||
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{| class="wikitable" | {| class="wikitable" | ||
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|- | |- | ||
|} | |} | ||
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==Example== | ==Example== | ||
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DROP INDEX staff_no ON staff | DROP INDEX staff_no ON staff | ||
</code> | </code> | ||
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==Products== | ==Products== | ||
Revision as of 10:05, 11 December 2012
Purpose
Removes an index from a table
Syntax
DROP INDEX <index> ON <table>
See Also
ADD TABLE, ALTER INDEX, ALTER TABLE, CREATE INDEX, CREATE TABLE, OPEN DATABASE
Description
The DROP INDEX command removes an index from a table. When the index is dropped it frees the disk space which it occupied.
The table must be able to be locked for EXCLUSIVE use during the operation.
| Keywords | Description |
|---|---|
| index | The name of the index to be dropped. |
| table | The name of the table from which to drop the index. |
Example
DROP INDEX staff_no ON staff
Products
Lianja Server, Lianja
