BSON_COMPARE

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.

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 |
+--------+