If i have a function that returns a termination date that I want in my
insert select source, and I decided to conditino the the functions
result in the where clause, will that impact performance with a second
call two the function?

Any way condition the results of the function without calling it?


insert into CAP_CUST_1
(BTN, STATUS, PLAN_BEGIN, REASON, PLAN_END, BILL_METH)
select distinct an.mcman_cdani BTN,
st.status_group STATUS,
trunc(an.mcman_dtfecestado) PLAN_BEGIN,
an.mcman_glmotivo REASON,
pk_fees.fn_GetTerminationDate(an.mcman_cdani,

an.mcman_dtfecestado,
endperiod)
PLAN_END,
st.bill_method BILL_METH
from mcman an
inner join vw_status_codes st on st.status_code =
an.mcman_glestado
inner join cap_cust_testlist t on t.btn = an.mcman_cdani
where trunc(an.mcman_dtfecestado) <= endperiod
-- I WOULD LIKE TO CHECK TO SEE IF TERMINATION DATE IS BEFORE A
PARTICULAR DATE HERE.