Important

The SingleStore 9.1 release candidate (RC) is available now. It will be promoted to general availability (GA) soon and at that time it will be renamed to SingleStore 10.

In the interim, SingleStore 9.1 RC can be used to preview, evaluate, and provide feedback on the new and upcoming features in SingleStore 10, while SingleStore 9.0 is recommended for production workloads.

BSON_COMPARE

Syntax

BSON_COMPARE(<input1>, <input2>)

Arguments

<input1>, <input2>: Any valid BSON value or an expression that evaluates to a valid BSON value.

Return Type

BSON_COMPARE() returns the following values:

Comparison	Output
`<input1>` equals `<input2>`	0
`<input1>` is less than `<input2>`	-1
`<input1>` is greater than `<input2>`	1

Remarks

BSON_COMPARE() returns NULL for cross-type comparisons.

Examples

Note:The following examples explicitly cast string to BSON for clarity. Similarly, the output is cast to JSON.

Here are a few examples of valid BSON value comparisons:

SQL

SELECT BSON_COMPARE('"string"':>BSON,'"string"':>BSON) AS Result;

+--------+
| Result |
+--------+
|      0 |
+--------+

SQL

SELECT BSON_COMPARE('{"$oid":"641044fd4542e7dc53758df9"}':>BSON,'{"$oid":"641044fd4542e7dc53758df9"}':>BSON) AS Result;

+--------+
| Result |
+--------+
|      0 |
+--------+

SQL

SELECT BSON_COMPARE('{"$numberLong":"99991241"}':>BSON, 99991241:>BSON) AS Result;

+--------+
| Result |
+--------+
|      0 |
+--------+

SQL

SELECT BSON_COMPARE('{"$numberLong":"99991241"}':>BSON, '{"$numberDecimal":"211"}':>BSON) AS Result;

+--------+
| Result |
+--------+
|      1 |
+--------+

SQL

SELECT BSON_COMPARE('null':>BSON,'null':>BSON) AS Result;

+--------+
| Result |
+--------+
|      0 |
+--------+

The following examples return NULL because of cross-type value comparisons:

SQL

SELECT BSON_COMPARE('{"$numberLong":"99991241"}':>BSON, '"99991241"':>BSON) AS Result;

+--------+
| Result |
+--------+
|   NULL |
+--------+

SQL

SELECT BSON_COMPARE('{"$date":"2023-03-14T09:48:10.720Z"}':>BSON, '"2023-03-14T09:48:10.720Z"':>BSON) AS Result;

+--------+
| Result |
+--------+
|   NULL |
+--------+