$PBExportHeader$f_myretrieve2.srf
$PBExportComments$datasotre添加条件后retrieve--函数
global type f_myretrieve2 from function_object
end type

forward prototypes
global function integer f_myretrieve2 (datastore f_ds, string f_where)
end prototypes

global function integer f_myretrieve2 (datastore f_ds, string f_where);string ls_old,ls_new,ls_old1,ls_old2
int li_pos,li_pos2
f_where='('+f_where+')'
ls_old=f_ds.describe("DataWindow.Table.Select")

li_pos=pos(lower(ls_old),' order by')
li_pos2=pos(lower(ls_old),' group by')
if li_pos2>0 then li_pos=min(li_pos,li_pos2)
if li_pos>0 then
	ls_old1=left(ls_old,li_pos)
	ls_old2=right(ls_old,len(ls_old) - li_pos+1)
else
	ls_old1=ls_old
end if
li_pos=pos(lower(ls_old1),' where ')
if li_pos>0 then
	ls_old1=left(ls_old1,li_pos -1)+' where ('+right(ls_old1,len(ls_old1) - li_pos -6)
	ls_new=ls_old1+") and "+f_where+ls_old2
else
	ls_new=ls_old1+" where "+f_where+ls_old2
end if

if f_ds.Modify('DataWindow.Table.Select="'+ls_new+'"')='' then
	f_ds.retrieve()
	f_ds.Modify('DataWindow.Table.Select="'+ls_old+'"')
	return 1
else
	f_ds.Modify('DataWindow.Table.Select="'+ls_old+'"')
	return 0
end if

end function