BOOL

The BOOL stores a Boolean value of false or true.

Aliases

In CockroachDB, BOOLEAN is an alias for BOOL.

Syntax

There are two predefined for BOOL: TRUE and FALSE (the names are case-insensitive).

Alternately, a boolean value can be obtained by coercing a numeric value: zero is coerced to FALSE, and any non-zero value to TRUE.

• CAST(0 AS BOOL) (false)
• CAST(123 AS BOOL) (true)

Size

A BOOL value is 1 byte in width, but the total storage size is likely to be larger due to CockroachDB metadata.

Examples

> CREATE TABLE bool (a INT PRIMARY KEY, b BOOL, c BOOLEAN);

> SHOW COLUMNS FROM bool;

  column_name | data_type | is_nullable | column_default | generation_expression |  indices  | is_hidden
--------------+-----------+-------------+----------------+-----------------------+-----------+------------
  a           | INT8      |    false    | NULL           |                       | {primary} |   false
  b           | BOOL      |    true     | NULL           |                       | {primary} |   false
  c           | BOOL      |    true     | NULL           |                       | {primary} |   false
(3 rows)

> INSERT INTO bool VALUES (12345, true, CAST(0 AS BOOL));

> SELECT * FROM bool;

+-------+------+-------+
|   a   |  b   |   c   |
+-------+------+-------+
| 12345 | true | false |
+-------+------+-------+

Supported casting and conversion

BOOL values can be to any of the following data types:

Type	Details
INT	Converts true to 1, false to 0
DECIMAL	Converts true to 1, false to 0
FLOAT	Converts true to 1, false to 0
STRING	––

See also