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This version of CockroachDB is no longer supported. Cockroach Labs supports the current stable release and two releases prior. Please use one of these supported versions.

The BYTES data type stores binary strings of variable length.

Aliases

In CockroachDB, the following are aliases for BYTES:

  • BYTEA
  • BLOB

Syntax

To express a byte array constant, see the section on byte array literals for more details. For example, the following three are equivalent literals for the same byte array: b'abc', b'\141\142\143', b'\x61\x62\x63'.

In addition to this syntax, CockroachDB also supports using string literals, including the syntax '...', e'...' and x'....' in contexts where a byte array is otherwise expected.

Size

The size of a BYTES value is variable, but it's recommended to keep values under 64 kilobytes to ensure performance. Above that threshold, write amplification and other considerations may cause significant performance degradation.

Example

> CREATE TABLE bytes (a INT PRIMARY KEY, b BYTES);

> -- explicitly typed BYTES literals
> INSERT INTO bytes VALUES (1, b'\141\142\143'), (2, b'\x61\x62\x63'), (3, b'\141\x62\c');

> -- string literal implicitly typed as BYTES
> INSERT INTO bytes VALUES (4, 'abc');


> SELECT * FROM bytes;
+---+-----+
| a |  b  |
+---+-----+
| 1 | abc |
| 2 | abc |
| 3 | abc |
| 4 | abc |
+---+-----+
(4 rows)

Supported Conversions

BYTES values can be cast explicitly to STRING. The conversion verifies that the byte array contains only valid UTF-8 byte sequences; an error is reported otherwise.

STRING values can be cast explicitly to BYTES. This conversion always succeeds.

See Also

Data Types



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