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Parameter
|
Type
|
Description
|
|
IN
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||
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pMemTree
|
XM_Tree *
|
The tree to use for allocating items with xm_allocItem calls.
|
|
pList
|
DAM_HSCALAR_LIST
|
The list to which scalar function information is to be added.
|
|
sName
|
char *
|
The name of the scalar function.
|
|
iConstantFunc
|
int
|
Indicates if the function has constant output or not.
1 - indicates that the function is a constant scalar function and is evaluated only once per query if all its arguments are literal values.
0 - indicates that the function is a variable scalar function and therefore should be evaluated once per record during the dam_isTargetRow call, regardless of the input.
|
|
iResXoType
|
int
|
The type of the result value of the scalar function.
|
|
iNumInputParams
|
int
|
The number of arguments expected by the function.
>=0 to allow fixed argument list
< 0 to allow variable argument list with a maximum of |args|
|
|
pfScalarFunc
|
dam_scalar_func_type
|
The function in the IP that can execute the scalar function. All scalar functions must be exported to allow the OpenAccess SDK SQL engine to call them.
|
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RETURN
|
||
|
int
|
DAM_SUCCESS - on success.
DAM_FAILURE - on failure
|
