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Create, alter, and drop secondary selective XML indexes

  • Artykuł

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance

Describes how to create a new secondary selective XML index, or alter or drop an existing secondary selective XML index.

Create a secondary selective XML index

You can create a secondary selective XML index using Transact-SQL by calling the CREATE XML INDEX statement. For more information, see CREATE XML INDEX (Selective XML Indexes).

The following example creates a secondary selective XML index on the path 'pathabc'. The path to index is identified by the name that was given to it when it was created with the CREATE SELECTIVE XML INDEX statement. For more information, see CREATE SELECTIVE XML INDEX (Transact-SQL).

CREATE XML INDEX filt_sxi_index_c
ON Tbl(xmlcol)
USING XML INDEX sxi_index
FOR
(
    pathabc
);

Alter a secondary selective XML index

The ALTER statement isn't supported for secondary selective XML indexes. To change a secondary selective XML index, drop the existing index and recreate it.

  1. Drop the existing secondary selective XML index by calling the DROP INDEX statement. For more information, see DROP INDEX (Selective XML Indexes).

  2. Recreate the index with the desired options by calling the CREATE XML INDEX statement. For more information, see CREATE XML INDEX (Selective XML Indexes).

The following example changes a secondary selective XML index by dropping it and recreating it.

DROP INDEX Tbl.filt_sxi_index_c
GO
CREATE XML INDEX filt_sxi_index_c
ON Tbl(xmlcol)
USING XML INDEX sxi_index
FOR
(
    pathabc
);

Drop a secondary selective XML index

Drop a secondary selective XML index using Transact-SQL by calling the DROP INDEX statement. For more information, see DROP INDEX (Selective XML Indexes).

The following example shows a DROP INDEX statement.

DROP INDEX ssxi_index
ON tbl;

See also