Warning
SingleStore 9.0 gives you the opportunity to preview, evaluate, and provide feedback on new and upcoming features prior to their general availability. In the interim, SingleStore 8.9 is recommended for production workloads, which can later be upgraded to SingleStore 9.0.
IS_
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Returns a TINYINT 1 for nullable BSON input values, and returns a TINYINT 0 for other values.
By default, empty values, BSON NULL, and BSON Undefined are interpreted as nullable.
Syntax
IS_BSON_NULL(<value>)Argument
<value>: A valid BSON value or an expression that evaluates to a valid BSON value.
Return Type
SingleStore TINYINT type.
Remarks
The following table specifies the value returned by IS_ function for each input value:
|
Input Value |
Output Value |
|---|---|
|
|
1 |
|
BSON |
1 |
|
BSON |
1 |
|
Any other value |
0 |
Examples
Here are a few examples that demonstrate the behavior of IS_ function:
SELECT IS_BSON_NULL(NULL) AS Result;
+--------+
| Result |
+--------+
| 1 |
+--------+SELECT IS_BSON_NULL('null':>BSON) AS Result;
+--------+
| Result |
+--------+
| 1 |
+--------+SELECT IS_BSON_NULL('{"$undefined":true}':>BSON) AS Result;
+--------+
| Result |
+--------+
| 1 |
+--------+SELECT IS_BSON_NULL('"random string"') AS Result;
+--------+
| Result |
+--------+
| 0 |
+--------+SELECT IS_BSON_NULL(1234) AS Result;
+--------+
| Result |
+--------+
| 0 |
+--------+Last modified: April 4, 2024