Mike C <smith.not.western@gmail.com> writes:
> I need to create a new index on an existing table. The table is constantly
> inserted into every second. Does CREATE INDEX require an exclusive write
> lock on the table? If it does have a write lock what happens to the insert
> statements at the time, are they simply played later or do they fail?
The inserting transactions are blocked until the CREATE INDEX is done.
regards, tom lane