Obtain information about constant arguments
When the companion UDR receives an argument that is a constant,
you can obtain the following information about this constant from
within the cost or selectivity function.
| MI_FUNCARG information | DataBlade API function |
|---|---|
| The constant value of the companion-UDR argument | mi_funcarg_get_constant() |
| Determines if the value of the companion-UDR argument is the SQL NULL value | mi_funcarg_isnull() |