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17 wrz 2024 · You can create nonclustered indexes in SQL Server by using SQL Server Management Studio or Transact-SQL. A nonclustered index is an index structure separate from the data stored in a table that reorders one or more selected columns.
Learn how to create and use non-clustered indexes in SQL Server to improve query performance and reduce IO operations. See examples of covering indexes, indexes with included columns, filtered indexes and their benefits and drawbacks.
Create a nonclustered index on a table or view. CREATE INDEX index1 ON schema1.table1 (column1); Create a clustered index on a table and use a 3-part name for the table. CREATE CLUSTERED INDEX index1 ON database1.schema1.table1 (column1); Create a nonclustered index with a unique constraint and specify the sort order
Learn how to use the CREATE INDEX statement to create nonclustered indexes for tables in SQL Server. See examples of creating indexes for single or multiple columns and how they affect query performance.
16 wrz 2024 · When you try to enforce a PRIMARY KEY constraint on an existing table and a clustered index already exists on that table, SQL Server enforces the primary key using a nonclustered index. For more information, see Create primary keys and Create unique constraints .
10 sty 2020 · Learn how to use SQL CREATE INDEX statement to create clustered and non-clustered indexes in SQL Server. See the syntax, examples, and differences between the two types of indexes.
Learn how to create non-clustered indexes in SQL Server using syntax or SSMS. A non-clustered index does not sort the data rows physically, but creates a separate key-value structure with pointers to the data rows.
