I suggest you research more on clustered indexes which have been around for more than twenty years, whereas the Postgres 'cluster' command is not core knowledge in the field of DBMSs and I already said I am not talking about that so please stop pushing the cluster command on me - it isn't something I would use because I believe the index should be clustered or not from DDL rather than having to be clustered ad hoc with such an SQL command.

Update: Put simply:

- a clustered index is necessary to ensure the underlying data is maintained in index order (popular analogy is a phone book).

- the cluster command does not create a clustered index but organises the data into index order one time per use.

- you cannot use the cluster command to make the index clustered - you have to use an ALTER command to do that.

One world, one people

In reply to Re^8: Architecture design for full stack development. by anonymized user 468275
in thread Architecture design for full stack development. by anonymized user 468275

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