OpenAccess SDK SQL Engine Core Functions API : Function Reference : dam_getValueTypeOfExp

dam_getValueTypeOfExp

This function gets the value type of the argument passed into a scalar function implemented by the IP.

Use the function dam_getFirstValExp and dam_getNextValExp to step through the argument list. This function is used when the output type of the scalar function is to be determined based on one of the arguments' types.

int dam_getValueTypeOfExp(
XM_Tree * pMemTree,
DAM_HVALEXP_LIST hValExpList,
DAM_HVALEXP hValExp)

Table 163. Parameters for dam_getValueTypeOfExp
Parameter	Type	Description
IN
pMemTree	XM_Tree *	The memory tree to use for temporary storage.
hValExpList	DAM_HVALEXP_LIST	The list of arguments as passed into the scalar function.
hValExp	DAM_HVALEXP	The argument for which you want to retrieve data.
RETURN
	int	The data type of value expression. See Table 33.

dam_getValueTypeOfExp

See also