The mi_qual_boolop() accessor function
The mi_qual_boolop() function retrieves the Boolean operator that combines two qualifications in a complex expression.
Syntax
MI_AM_BOOLOP mi_qual_boolop(MI_AM_QUAL_DESC *qualDesc);- qualDesc
- Points to the qualification descriptor.
Usage
The access method first obtains results for the simple functions in a complex qualification. To determine how to combine the results that the access method has so far, it can call the mi_qual_boolop() function.
Return values
- MI_BOOLOP_NONE
- Indicates that the current qualification does not contain a Boolean operator.
- MI_BOOLOP_AND
- Indicates that the current qualification contains a Boolean AND operator.
- MI_BOOLOP_OR
- Indicates that the current qualification contains a Boolean OR operator.