You need to generate a vector from the string '[1.2, 3.4]' in FLOAT32 format with 2 dimensions. Which function will you use?

The function to use for generating a vector from the string '[1.2, 3.4]' in FLOAT32 format with 2 dimensions is the one designed specifically for creating vectors from string inputs. This function allows for the conversion of a text representation of vector data into an actual vector format suitable for use in databases or analytical applications.

When you use this function, it interprets the string format correctly and creates a vector object that accurately represents the specified size and data type. In this case, it will construct a 2-dimensional vector with the values 1.2 and 3.4 in FLOAT32 format.

Other functions listed serve different purposes: for instance, VECTOR_DISTANCE calculates the distance between two vectors, FROM_VECTOR would typically deal with retrieving or converting data back to a standard format from a vector, and VECTOR_SERIALIZE is likely used for converting vectors into a string or other format for storage or transmission. These functionalities do not align with the need to directly create a new vector from a string input. Thus, using the appropriate vector generation function is key to achieving the desired outcome.