PostgreSQL Programmer's Guide
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# pg_lo_read

## Name

pg_lo_read — read a large object

    pg_lo_read conn fd bufVar len

### Inputs

`conn`

  Specifies a valid database connection.

`fd`

  File descriptor for the large object from pg_lo_open.

`bufVar`

  Specifies a valid buffer variable to contain the large object segment.

`len`

  Specifies the maximum allowable size of the large object segment.

### Outputs

None

## Description

`pg_lo_read` reads at most `len` bytes from a large object into a variable named `bufVar`.

## Usage

`bufVar` must be a valid variable name.

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