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Warning:
CockroachDB v1.0 is no longer supported as of November 10, 2018. For more details, refer to the Release Support Policy.
The BOOL data type stores a Boolean value of false or true.
Aliases
In CockroachDB, BOOLEAN is an alias for BOOL.
Syntax
There are two predefined
named constants 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;
+-------+------+-------+---------+
| Field | Type | Null | Default |
+-------+------+-------+---------+
| a | INT | false | NULL |
| b | BOOL | true | NULL |
| c | BOOL | true | NULL |
+-------+------+-------+---------+
> INSERT INTO bool VALUES (12345, true, CAST(0 AS BOOL));
> SELECT * FROM bool;
+-------+------+-------+
| a | b | c |
+-------+------+-------+
| 12345 | true | false |
+-------+------+-------+
Supported Casting & Conversion
BOOL values can be cast 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 |
–– |
Note:
Because the SERIAL data type represents values automatically generated by CockroachDB to uniquely identify rows, you cannot meaningfully cast other data types as SERIAL values.See Also
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