VECTOR_MUL

Syntax

VECTOR_MUL(vector_expression, vector_expression)

Arguments

• vector_expression: An expression that evaluates to a vector. The vector must be encoded as a blob containing packed single-precision or double-precision floating-point numbers in little-endian byte order.

Return Type

A blob containing packed single-precision floating-point numbers in little-endian byte order.

Remarks

A vector can be of any length, but the input blob length must be divisible by the packed vector element size (1, 2, 4 or 8 bytes, depending on the vector element).

You can specify the datatype of the vector elements in which this operation is performed on the vector by adding a suffix to the function. Omitting the suffix from the function is equivalent to suffixing it with _F32. All operations are done using the specified datatype. The following table lists the suffixes and their datatype.

Examples

The following queries use the JSON_ARRAY_UNPACK() function to view the output in JSON format.

SELECT JSON_ARRAY_UNPACK(VECTOR_MUL(JSON_ARRAY_PACK('[12.1,2.2]'),JSON_ARRAY_PACK('[8.3,4.6]'))) AS "Result";

+-------------------------+
| Result                  |
+-------------------------+
| [100.430008,10.1199999] |
+-------------------------+

SELECT HEX(VECTOR_MUL(JSON_ARRAY_PACK('[12.1,2.2]'),JSON_ARRAY_PACK('[8.3,4.6]'))) AS "Result";

+------------------+
| Result           |
+------------------+
| 2ADCC84285EB2141 |
+------------------+

SELECT JSON_ARRAY_UNPACK_I16(VECTOR_MUL_I16(JSON_ARRAY_PACK_I16('[6,2]'),JSON_ARRAY_PACK_I16('[8,4]'))) AS "Result";

+--------+
| Result |
+--------+
| [48,8] |
+--------+

Related Topics

• JSON_ARRAY_PACK

• JSON_ARRAY_UNPACK