How to view indexes in Oracle database?

2 years ago
Isabella Edwards
2 minutes

In an Oracle database, indexes can be viewed by using the following methods:

  1. To search for all indexes, you can use the following SQL statement to query all indexes in the database:
SELECT index_name, table_name
FROM user_indexes;

This SQL statement will retrieve the names of all indexes owned by the current user and their corresponding table names.

  1. To query the indexes of a specific table, you can use the following SQL statement:
SELECT index_name
FROM user_indexes
WHERE table_name = 'table_name';

Replace table_name with the name of the table you want to query, this SQL statement will return the names of all indexes in the specified table.

  1. To query column information in an index: You can use the following SQL statement to retrieve the columns included in an index:
SELECT column_name
FROM user_ind_columns
WHERE index_name = 'index_name';

Replace the index_name with the name of the index you want to query, this SQL statement will return all column names included in that index.

  1. To obtain detailed information about an index, you can use the following SQL statement to query the index’s details:
SELECT index_name, table_name, column_name
FROM user_ind_columns
WHERE index_name = 'index_name';

Replace index_name with the name of the index you want to query, this SQL statement will return the table name to which the index belongs and the names of the columns it contains.

Using the above methods, it is easy to view index information in an Oracle database.

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