$PBExportHeader$f_rpt_cksql.srf
$PBExportComments$分解SQL语句--函数
global type f_rpt_cksql from function_object
end type

forward prototypes
global subroutine f_rpt_cksql (string fsql, ref string ffield, ref string ffrom, ref string fwhere, ref string fgroup, ref string fsort)
end prototypes

global subroutine f_rpt_cksql (string fsql, ref string ffield, ref string ffrom, ref string fwhere, ref string fgroup, ref string fsort);string ls_sql//select ... from ... where ... group by ... order by ...
int l[6]
fsql=trim(fsql)
ls_sql=lower(fsql)
ls_sql=f_replace(ls_sql,'~n',' ')

l[1]=pos(ls_sql,' from ')
l[2]=pos(ls_sql,' where ')
l[3]=pos(ls_sql,' group by ')
l[4]=pos(ls_sql,' order by ')
l[5]=len(ls_sql)
ffield=trim(mid(fsql,8,l[1] -8))

l[6]=l[5]+1
if l[2]>0 then l[6]=min(l[6],l[2])
if l[3]>0 then l[6]=min(l[6],l[3])
if l[4]>0 then l[6]=min(l[6],l[4])
ffrom=trim(mid(fsql,l[1]+6,l[6] -(l[1]+6)))

if l[2]>0 then
	l[6]=l[5]+1
	if l[3]>0 then l[6]=min(l[6],l[3])
	if l[4]>0 then l[6]=min(l[6],l[4])
	fwhere=trim(mid(fsql,l[2]+7,l[6] -(l[2]+7)))
else
	fwhere=''
end if

if l[3]>0 then
	l[6]=l[5]+1
	if l[4]>0 then l[6]=min(l[6],l[4])
	fgroup=trim(mid(fsql,l[3]+10,l[6] -(l[3]+10)))
else
	fgroup=''
end if

if l[4]>0 then
	l[6]=l[5]+1
	fsort=trim(mid(fsql,l[4]+10,l[6] -(l[4]+10)))
else
	fsort=''
end if

end subroutine