Waiting for 9.4 – Add support for REFRESH MATERIALIZED VIEW CONCURRENTLY.

On 16th of July, Kevin Grittner committed patch:

Add support for REFRESH MATERIALIZED VIEW CONCURRENTLY.
 
This allows reads to continue without any blocking while a REFRESH
runs.  The new data appears atomically as part of transaction
commit.
 
Review questioned the Assert that a matview was not a system
relation.  This will be addressed separately.
 
Reviewed by Hitoshi Harada, Robert Haas, Andres Freund.
Merged after review with security patch f3ab5d4.

Continue reading Waiting for 9.4 – Add support for REFRESH MATERIALIZED VIEW CONCURRENTLY.

Waiting for 9.3 – Add a materialized view relations.

On 4th of March, Kevin Grittner committed patch:

Add a materialized view relations.
 
A materialized view has a rule just like a view and a heap and
other physical properties like a table.  The rule is only used to
populate the table, references in queries refer to the
materialized data.
 
This is a minimal implementation, but should still be useful in
many cases.  Currently data is only populated "on demand" by the
CREATE MATERIALIZED VIEW and REFRESH MATERIALIZED VIEW statements.
It is expected that future releases will add incremental updates
with various timings, and that a more refined concept of defining
what is "fresh" data will be developed.  At some point it may even
be possible to have queries use a materialized in place of
references to underlying tables, but that requires the other
above-mentioned features to be working first.
 
Much of the documentation work by Robert Haas.
Review by Noah Misch, Thom Brown, Robert Haas, Marko Tiikkaja
Security review by KaiGai Kohei, with a decision on how best to
implement sepgsql still pending.

Continue reading Waiting for 9.3 – Add a materialized view relations.