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GowthamRaj K
2021-07-29 08:22:02 +05:30
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@@ -692,4 +692,5 @@ There are different types of joins available in SQL −
- Unique indexes are used not only for performance, but also for data integrity. - Unique indexes are used not only for performance, but also for data integrity.
- A unique index does not allow any duplicate values to be inserted into the table. - A unique index does not allow any duplicate values to be inserted into the table.
CREATE UNIQUE INDEX index_name
on table_name (column_name);