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.