MySQL -> PostgreSQL conversion issue

Hi

I have the following rather complicated SQL which works under MySQL but fails
under PostgreSQL 8.3. The SQL is generated by A2Billing
(http://www.asterisk2billing.org/cgi-bin/trac.cgi). The issue is the following
part of the SQL:

as tf on tf.dnid=substr(cdr.dnid,1,length(tf.dnid))

where tf.dnid is a bigint and cdr.dnid is varchar(40). The error returned is
ERROR: function length(bigint) does not exist at character 2521
2010-10-29 13:34:27 NZDT HINT: No function matches the given name and
argument types. You might need to add explicit type casts.

I have tried adding explicit casts:

tf.dnid = substr(cdr.dnid, 1, length(cast(td.dnid) as varchar(40)))
which complains with
ERROR: operator does not exist: bigint = text at character 2502

and

tf.dnid = cast(substr(cdr.dnid, 1, length(cast(td.dnid) as varchar(40))) as
bigint)
which complains with
ERROR: invalid input syntax for integer: "dnid"

What would be the best way to convert this to work under PostgreSQL?

The complete log entry is given below:

Thanks

2010-10-29 13:34:27 NZDT ERROR: function length(bigint) does not exist at
character 2521
2010-10-29 13:34:27 NZDT HINT: No function matches the given name and
argument types. You might need to add explicit type casts.
2010-10-29 13:34:27 NZDT STATEMENT: create temporary table pnl_report as
select
id,name,call_count,time_minutes,tall_free_buy_cost,pay_phone_buy_cost,orig_only,credits,orig_total,
tall_free_sell_cost,pay_phone_sell_cost,term_only,charges,term_total,
first_use,discount,
net_revenue,(net_revenue-orig_total) as profit, (net_revenue-
orig_total)/net_revenue*100 as margin
from(
select main_id as id,
name,call_count,time_minutes,tall_free_buy_cost,pay_phone_buy_cost,orig_only,credits,orig_cost+credits
as orig_total,
tall_free_sell_cost,pay_phone_sell_cost,term_only,charges,term_cost+charges
as term_total,
first_use,discount,
((term_cost+charges))*( 1-discount/100) as
net_revenue
from(
select t1.id_group as
main_id,cg.name,call_count,time_minutes,tall_free_buy_cost,pay_phone_buy_cost,
orig_cost-tall_free_buy_cost-pay_phone_buy_cost as
orig_only,orig_cost,
case when credits is null then 0 else credits end as credits,0
as total,
tall_free_sell_cost,pay_phone_sell_cost,term_cost-
tall_free_sell_cost-pay_phone_sell_cost as term_only,term_cost,
case when charges is null then 0 else charges end as
charges,
first_use,discount

from
(
select id_group,count(*) as call_count ,sum(sessiontime) / 60 as
time_minutes,
sum( case when tall_free=0 then 0 else
real_sessiontime/60*tf_cost end) as tall_free_buy_cost,
sum( case when pay_phone=0 then 0 else
real_sessiontime/60*tf_cost end) as pay_phone_buy_cost,
sum(buycost) as orig_cost,
sum( case when tall_free=0 then 0 else
real_sessiontime/60*tf_sell_cost end) as tall_free_sell_cost,
sum( case when pay_phone=0 then 0 else
real_sessiontime/60*tf_sell_cost end) as pay_phone_sell_cost,
sum(sessionbill) as term_cost,
sum(discount*sessionbill)/sum(sessionbill) as discount
from (
select cc.id_group,
cdr.sessiontime,cdr.dnid,cdr.real_sessiontime,sessionbill,buycost,cc.discount,
case when tf.cost is null then 0 else tf.cost end as
tf_cost,
case when tf.sell_cost is null then 0 else tf.sell_cost
end as tf_sell_cost,
case when tf.dnid_type is null then 0 when
tf.dnid_type=1 then 1 else 0 end as tall_free,
case when tf.dnid_type is null then 0 when
tf.dnid_type=2 then 1 else 0 end as pay_phone
from cc_call cdr left join cc_card cc on cdr.card_id=cc.id
left join
(select 'dnid' as dnid, 0.1 as sell_cost,0.1 as cost,0
as dnid_type union select 8887798764,0.02,0.06 ,1
) as tf on tf.dnid=substr(cdr.dnid,1,length(tf.dnid))
where
sessiontime>0 and CURRENT_TIMESTAMP - interval '6 hours' <=
cdr.starttime
order by cdr.starttime desc
) as a group by id_group
) as t1 left join cc_card_group as cg on cg.id=id_group left join
pnl_report_sub1 as t2 on t1.id_group=t2.id_group
left join pnl_report_sub2 as t3 on t1.id_group=t3.id_group
left join pnl_report_sub3 as t4 on t1.id_group=t4.id_group
)as result
)as final

2010-10-29 13:34:27 NZDT ERROR: relation "pnl_report" does not exist
2010-10-29 13:34:27 NZDT STATEMENT: SELECT
name,call_count,time_minutes,tall_free_buy_cost,pay_phone_buy_cost,orig_only,credits,orig_total,
tall_free_sell_cost,pay_phone_sell_cost,term_only,charges,term_total,
first_use,discount,
net_revenue, margin, profit, id, id FROM pnl_report ORDER BY
id ASC LIMIT 10 OFFSET 0
2010-10-29 13:34:27 NZDT ERROR: relation "pnl_report" does not exist
2010-10-29 13:34:27 NZDT STATEMENT: SELECT count(*) FROM pnl_report
2010-10-29 13:34:27 NZDT ERROR: relation "pnl_report" does not exist
2010-10-29 13:34:27 NZDT STATEMENT: select
'TOTAL',sum(call_count),sum(time_minutes),sum(tall_free_buy_cost),sum(pay_phone_buy_cost),sum(orig_only),sum(credits),sum(orig_total),sum(
tall_free_sell_cost),sum(pay_phone_sell_cost),sum(term_only),sum(charges),sum(term_total),sum(first_use),
(1-sum(net_revenue)/sum(term_total))*100,sum(
net_revenue),sum(profit)/sum(net_revenue)*100,sum(profit),sum(id) from
pnl_report

--
Regards
Scott Newton
Software Engineer @ Vadacom Limited
Ph: (09) 9690600 x 280