2 Chapter 33. Large Objects
7 33.2. Implementation Features
8 33.3. Client Interfaces
10 33.3.1. Creating a Large Object
11 33.3.2. Importing a Large Object
12 33.3.3. Exporting a Large Object
13 33.3.4. Opening an Existing Large Object
14 33.3.5. Writing Data to a Large Object
15 33.3.6. Reading Data from a Large Object
16 33.3.7. Seeking in a Large Object
17 33.3.8. Obtaining the Seek Position of a Large Object
18 33.3.9. Truncating a Large Object
19 33.3.10. Closing a Large Object Descriptor
20 33.3.11. Removing a Large Object
22 33.4. Server-Side Functions
25 PostgreSQL has a large object facility, which provides stream-style
26 access to user data that is stored in a special large-object structure.
27 Streaming access is useful when working with data values that are too
28 large to manipulate conveniently as a whole.
30 This chapter describes the implementation and the programming and query
31 language interfaces to PostgreSQL large object data. We use the libpq C
32 library for the examples in this chapter, but most programming
33 interfaces native to PostgreSQL support equivalent functionality. Other
34 interfaces might use the large object interface internally to provide
35 generic support for large values. This is not described here.