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Diffstat (limited to 'static/netbsd/man3/sqlite3_snapshot.3')
| -rw-r--r-- | static/netbsd/man3/sqlite3_snapshot.3 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/static/netbsd/man3/sqlite3_snapshot.3 b/static/netbsd/man3/sqlite3_snapshot.3 new file mode 100644 index 00000000..367e56a9 --- /dev/null +++ b/static/netbsd/man3/sqlite3_snapshot.3 @@ -0,0 +1,36 @@ +.Dd January 24, 2024 +.Dt SQLITE3_SNAPSHOT 3 +.Os +.Sh NAME +.Nm sqlite3_snapshot +.Nd database snapshot +.Sh SYNOPSIS +.In sqlite3.h +.Vt typedef struct sqlite3_snapshot { unsigned char hidden[48]; } sqlite3_snapshot; +.Sh DESCRIPTION +An instance of the snapshot object records the state of a WAL mode +database for some specific point in history. +.Pp +In WAL mode, multiple database connections +that are open on the same database file can each be reading a different +historical version of the database file. +When a database connection begins a read transaction, +that connection sees an unchanging copy of the database as it existed +for the point in time when the transaction first started. +Subsequent changes to the database from other connections are not seen +by the reader until a new read transaction is started. +.Pp +The sqlite3_snapshot object records state information about an historical +version of the database file so that it is possible to later open a +new read transaction that sees that historical version of the database +rather than the most recent version. +.Sh IMPLEMENTATION NOTES +These declarations were extracted from the +interface documentation at line 10446. +.Bd -literal +typedef struct sqlite3_snapshot { + unsigned char hidden[48]; +} sqlite3_snapshot; +.Ed +.Sh SEE ALSO +.Xr sqlite3 3 |