max_index_keys

A preset configuration parameter reporting the maximum number of index keys

max_index_keys is a preset configuration parameter reporting the maximum number of index keys, as defined by INDEX_MAX_KEYS when PostgreSQL was built.

max_index_keys was added in PostgreSQL 8.0.

Default value

As of PostgreSQL 14, the default value for max_index_keys (as defined by INDEX_MAX_KEYS) is: 32.

Change history

Categories

GUC configuration item, Indexing, Preset configuration item

See also

max_function_args, max_identifier_length