Hello

> I don't want a situation like this:
>     CREATE INDEX CONCURRENTLY ...
>     DROP INDEX CONCURRENTLY ...
>     REINDEX INDEX (CONCURRENTLY) ...
>
> All three should be the same, and my suggestion is to add the
> parenthesized version to CREATE and DROP and not add the unparenthesized
> version to REINDEX.

We already have parenthesized VERBOSE option for REINDEX. So proposed syntax 
was:

REINDEX (CONCURRENTLY) INDEX ...
REINDEX (VERBOSE, CONCURRENTLY) INDEX ...

Like parameters for EXPLAIN, VACUUM. And completely unlike create/drop index.

So consistent syntax for create/drop would be:

CREATE (CONCURRENTLY) INDEX ...
CREATE (UNIQUE, CONCURRENTLY) INDEX ... # or we want parenthesized 
concurrently, but not unique? CREATE UNIQUE (CONCURRENTLY) INDEX?
DROP  (CONCURRENTLY) INDEX ...

How about REFRESH MATERIALIZED VIEW? Do not change?

regards, Sergei

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