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Documentation
/ SQL
/ Functions
Blob Functions
This section describes functions and operators for examining and manipulating blob values.
| Function | Description | Example | Result |
|---|---|---|---|
blob || blob |
Blob concatenation | '\xAA'::BLOB || '\xBB'::BLOB |
\xAA\xBB |
decode(blob) |
Convert blob to varchar. Fails if blob is not valid utf-8. | decode('\xC3\xBC'::BLOB) |
ü |
encode(string) |
Convert varchar to blob. Converts utf-8 characters into literal encoding. | encode('my_string_with_ü') |
my_string_with_\xC3\xBC |
octet_length(blob) |
Number of bytes in blob | octet_length('\xAA\xBB'::BLOB) |
2 |