This function creates a name-value-record from parallel tables of string names and string values. The correct metadata type for each name must be looked up from the schema associated with this session. The name-value record will automatically expand as needed. The names and data values are copied into the hc_nvr_t structure, so the original names table and values table are left unchanged.
Any time there is a conversion from a double type to or from a string type, there might be a loss of precision.