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This tutorial shows you how to use the SQL Server DROP INDEX statement to remove existing indexes from one or more tables.
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The DROP INDEX command is used to delete an index in a table. MS Access: DROP INDEX index_name ON table_name; SQL Server: DROP INDEX table_name.index_name; DB2/Oracle: DROP INDEX index_name; MySQL: ALTER TABLE table_name.
28 mar 2024 · In this article, learn how to drop or disable a SQL Server index that is no longer needed. Also, learn how to recreate and script out indexes.
You can drop a clustered index and move the resulting table to another filegroup or partition scheme in a single transaction by specifying the MOVE TO option. The DROP INDEX statement doesn't apply to indexes created by defining PRIMARY KEY or UNIQUE constraints.
28 lut 2023 · Indexes created as the result of a PRIMARY KEY or UNIQUE constraint cannot be deleted by using this method. Instead, the constraint must be deleted. To remove the constraint and corresponding index, use ALTER TABLE with the DROP CONSTRAINT clause in Transact-SQL.
So, basically, you execute the last piece of code here, iterate through the results (indexes and columns) and call GetCreateIndexScript for each index that is returned. Then you can safely execute each of the statements that are created to drop and recreate the indexes.
11 sie 2024 · Typically, to delete an index in SQL Server, we use the DROP INDEX statement. There are cases where we might drop it via other means (for example, if it’s implemented as part of a PRIMARY KEY or UNIQUE constraint – also shown below), but DROP INDEX is usually the go to command for such operations.
