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pg_lo_read
Name
pg_lo_read -- read from a large
object
Synopsis
pg_lo_read conn descriptor bufVar len
Description
pg_lo_read reads at most
len bytes from a large object into a
variable named bufVar.
Arguments
- conn
-
The handle of a connection to the database in which the
large object exists.
- descriptor
-
A descriptor for the large object from pg_lo_open.
- bufVar
-
The name of a buffer variable to contain the large
object segment.
- len
-
The maximum number of bytes to read.
Return Value
The number of bytes actually read is returned; this could be
less than the number requested if the end of the large object is
reached first. In event of an error, the return value is
negative.