A Simple Key For สล็อต pg Unveiled
A Simple Key For สล็อต pg Unveiled
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Specifies a role name for use to build the dump. This option triggers pg_dump to problem a SET job rolename
In the case of a parallel dump, the snapshot title outlined by this feature is employed rather then taking a whole new snapshot.
This option will make no big difference if there isn't any read through-compose transactions Lively when pg_dump is started off. If examine-create transactions are Energetic, the start in the dump may very well be delayed for an indeterminate period of time. when operating, performance with or with no swap is similar.
When applied with one of several archive file formats and coupled with pg_restore, pg_dump supplies a flexible archival and transfer system. pg_dump can be used to backup an entire databases, then pg_restore may be used to look at the archive and/or decide on which elements of the database are to be restored.
Note that if you employ this option currently, you probably also want the dump be in INSERT format, since the duplicate FROM for the duration of restore would not guidance row security.
Dump information as INSERT commands (as opposed to duplicate). This is likely to make restoration pretty slow; it is mainly practical for earning dumps which might be loaded into non-PostgreSQL databases. Any error all through restoring will bring about only rows which might be Element of the problematic INSERT to become dropped, rather than the complete desk contents.
When utilizing wildcards, be careful to quote the sample if wanted to stop the shell from expanding the wildcards; see illustrations beneath. the sole exception is always that an empty pattern is disallowed.
To perform a parallel dump, the databases server should help synchronized snapshots, a function which was สล็อตแตกง่าย launched in PostgreSQL nine.2 for Major servers and ten for standbys. with this particular feature, databases purchasers can ensure they see the same facts set Though they use distinct connections.
. The sample is interpreted according to the very same procedures as for -t. -T might be presented much more than at the time to exclude tables matching any of quite a few styles.
you are able to only use this feature While using the directory output structure mainly because this is the only output structure where by numerous procedures can publish their data concurrently.
having said that, the tar structure will not guidance compression. Also, when using tar structure the relative buy of desk info things can not be modified for the duration of restore.
That is similar to the -t/--table alternative, other than that In addition it consists of any partitions or inheritance little one tables of your table(s) matching the sample
Also, It's not necessarily assured that pg_dump's output might be loaded right into a server of the older big version — not even if the dump was taken from a server of that Model. Loading a dump file into an more mature server may possibly require manual modifying of the dump file to get rid of syntax not recognized with the older server. Use in the --quotation-all-identifiers solution is usually recommended in cross-version conditions, as it can stop complications arising from different reserved-word lists in various PostgreSQL variations.
In case your databases cluster has any local additions for the template1 database, watch out to revive the output of pg_dump into A really empty database; otherwise that you are very likely to get errors on account of duplicate definitions in the included objects.
Use DROP ... IF EXISTS instructions to fall objects in --clear mode. This suppresses “does not exist” errors That may if not be described. this feature is not really valid Unless of course --clear is additionally specified.
Use a serializable transaction for the dump, to make certain the snapshot applied is according to afterwards database states; but make this happen by looking forward to a degree while in the transaction stream at which no anomalies can be existing, to make sure that there isn't a risk of your dump failing or resulting in other transactions to roll back again having a serialization_failure. See Chapter thirteen For more info about transaction isolation and concurrency Management.
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