New Step by Step Map For สล็อต pg
New Step by Step Map For สล็อต pg
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parameter is interpreted for a sample based on the same principles used by psql's \d instructions (see Patterns), so multiple tables can be selected by composing wildcard figures inside the sample.
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This option will make no big difference if there are no go through-publish transactions active when pg_dump is started. If go through-produce transactions are active, the beginning from the dump could be delayed for an indeterminate period of time. as soon as functioning, functionality with or without the change is identical.
It will not dump the contents of views or materialized sights, and the contents of foreign tables will only be dumped Should the corresponding foreign server is specified with --involve-international-knowledge.
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Dump details as INSERT commands (rather than duplicate). Controls the utmost number of rows for every INSERT command. The value specified should be a amount bigger than zero. Any mistake in the course of restoring will result in only rows which can be Portion of the problematic INSERT to get missing, as opposed to the whole table contents.
. The sample is interpreted in accordance with the same procedures as for -n. -N might be provided a lot more than at the time to exclude schemas matching any of numerous patterns.
To carry out a parallel dump, the databases server really should assistance synchronized snapshots, a element that was introduced in PostgreSQL nine.2 for Key servers and 10 for standbys. using this type of characteristic, databases clientele can make sure they see exactly the same data set even though they use diverse connections.
If the thing is everything within the documentation that isn't suitable, isn't going to match your knowledge with the particular feature or necessitates more clarification, you should use this kind to report a documentation concern.
As a result any other use of the desk will not be granted possibly and may queue once the unique lock request. This includes the worker process looking to dump the table. with no precautions This might become a traditional deadlock situation. To detect this conflict, the pg_dump worker approach requests another shared lock using the NOWAIT alternative. When the worker process is just not granted this shared lock, any individual else must have requested an special lock Meanwhile and there is no way to carry on Using the dump, so pg_dump has no alternative but to abort the dump.
, ...) VALUES ...). This will make restoration pretty sluggish; it is principally beneficial for making dumps which can be loaded into non-PostgreSQL databases. Any mistake throughout restoring will induce only rows which can be Portion of the problematic INSERT to be missing, rather then the complete table contents.
. The timeout could possibly be specified in any with the formats approved by SET statement_timeout. (Allowed formats fluctuate depending on the server version that you are dumping from, but an integer variety of milliseconds is recognized by all variations.)
When working with wildcards, watch out to quote the pattern if needed to forestall the shell from increasing the wildcards; see Examples under.
; this selects both of those the schema by itself, and all its contained objects. When this option is not really specified, all non-program schemas within the concentrate on database will probably be dumped. a number of schemas can be chosen by composing multiple -n switches. The pattern
Without it the dump may well mirror a point out which isn't per any serial execution from the transactions sooner or later committed. one example is, if batch processing tactics are utilised, a batch may perhaps exhibit as closed from the dump without all of the things which can be in the batch showing.
Use a serializable transaction for that dump, to make sure that the snapshot made use of is according to later databases states; but make this happen by watching for a degree from the transaction stream at which no anomalies could be current, to ensure There's not a chance of your dump failing or leading to other transactions to roll back with a serialization_failure. See Chapter thirteen To learn more about transaction isolation and concurrency control.
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