pg_lo_read
Nome
pg_lo_read -- read from a large object
Sinopse
pg_lo_read conn descriptor bufVar len
Descrição
pg_lo_read reads at most len bytes from a large object into a variable named bufVar.
Argumentos
- 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.
Valor retornado
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.