mirror of
https://codeberg.org/superseriousbusiness/gotosocial.git
synced 2024-12-24 09:58:17 +03:00
38 lines
1.8 KiB
Go
38 lines
1.8 KiB
Go
// Package pgconn is a low-level PostgreSQL database driver.
|
|
/*
|
|
pgconn provides lower level access to a PostgreSQL connection than a database/sql or pgx connection. It operates at
|
|
nearly the same level is the C library libpq.
|
|
|
|
Establishing a Connection
|
|
|
|
Use Connect to establish a connection. It accepts a connection string in URL or keyword/value format and will read the
|
|
environment for libpq style environment variables.
|
|
|
|
Executing a Query
|
|
|
|
ExecParams and ExecPrepared execute a single query. They return readers that iterate over each row. The Read method
|
|
reads all rows into memory.
|
|
|
|
Executing Multiple Queries in a Single Round Trip
|
|
|
|
Exec and ExecBatch can execute multiple queries in a single round trip. They return readers that iterate over each query
|
|
result. The ReadAll method reads all query results into memory.
|
|
|
|
Pipeline Mode
|
|
|
|
Pipeline mode allows sending queries without having read the results of previously sent queries. It allows control of
|
|
exactly how many and when network round trips occur.
|
|
|
|
Context Support
|
|
|
|
All potentially blocking operations take a context.Context. The default behavior when a context is canceled is for the
|
|
method to immediately return. In most circumstances, this will also close the underlying connection. This behavior can
|
|
be customized by using BuildContextWatcherHandler on the Config to create a ctxwatch.Handler with different behavior.
|
|
This can be especially useful when queries that are frequently canceled and the overhead of creating new connections is
|
|
a problem. DeadlineContextWatcherHandler and CancelRequestContextWatcherHandler can be used to introduce a delay before
|
|
interrupting the query in such a way as to close the connection.
|
|
|
|
The CancelRequest method may be used to request the PostgreSQL server cancel an in-progress query without forcing the
|
|
client to abort.
|
|
*/
|
|
package pgconn
|