select in mysql

Hi
if for example i have this:
$pdf="select account_no,customer_no,unit_serial,pulse_channel,DATE(tran_date)as datei,floor(floor(time_to_sec(tran_date)/900)/4) as txm_hour,
             (floor(time_to_sec(tran_date)/900) % 4)*15 as txm_minutes,sum(unit_qty) as total
             from count_transactions
            WHERE account_no=$acn and customer_no=customer_details.account

can i do what i did in underline..
account-no is for count-transactions table looks for the same customer _details
asaidiAsked:
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ralmadaCommented:
it seems you want to join both tables. you can try
select 	account_no,
	customer_no,
	unit_serial,
	pulse_channel,
	DATE(tran_date) as datei,
	floor(floor(time_to_sec(tran_date)/900)/4) as txm_hour,
	(floor(time_to_sec(tran_date)/900) % 4)*15 as txm_minutes,
	sum(unit_qty) as total 

from count_transactions, customer_details.account
WHERE count_transactions.account_no=$acn and count_transactions.customer_no=customer_details.account

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ralmadaCommented:
oops, like this
select 	account_no,
	customer_no,
	unit_serial,
	pulse_channel,
	DATE(tran_date) as datei,
	floor(floor(time_to_sec(tran_date)/900)/4) as txm_hour,
	(floor(time_to_sec(tran_date)/900) % 4)*15 as txm_minutes,
	sum(unit_qty) as total 

from count_transactions, customer_details
WHERE count_transactions.account_no=$acn and count_transactions.customer_no=customer_details.account

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asaidiAuthor Commented:
Hi ralmada
please can you check this if it is correct i cannot get result
$pdf="select c.customer_name,t.account_no,t.customer_no,t.unit_serial,t.pulse_channel,DATE(t.tran_date)as datei,floor(floor(time_to_sec(t.tran_date)/900)/4) as txm_hour,
             (floor(time_to_sec(t.tran_date)/900) % 4)*15 as txm_minutes,sum(t.unit_qty) as total
             from t count_transactions,c customer_details
            WHERE t.account_no=$acn and t.customer_no=c.account and DATE(t.tran_date)>='$date' AND DATE(tran_date)<='$date2'
            AND t.unit_serial=$netw AND t.pulse_channel=1 OR t.pulse_channel=2 OR t.pulse_channel=3 OR t.pulse_channel=4
            group by txm_hour,txm_minutes,datei,c.customer_name,t.account_no ORDER BY txm_hour ASC";
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ralmadaCommented:
try
select 	customer_name, 
	account_no, 
	customer_no, 
	unit_serial, 
	pulse_channel, 
	datei, 
	tmx_hour, 
	tmx_minutes, 
	sum(t.unit_qty) as total 
from (
	select 
		c.customer_name,
		t.account_no,
		t.customer_no,
		t.unit_serial,
		t.pulse_channel,
		DATE(t.tran_date) as datei,
		floor(floor(time_to_sec(t.tran_date)/900)/4) as txm_hour,
	        (floor(time_to_sec(t.tran_date)/900) % 4)*15 as txm_minutes,
		t.unit_qty
	from count_transactions t,customer_details c
	WHERE 	t.account_no=$acn and 
		t.customer_no=c.account and 
		DATE(t.tran_date)>='$date' AND 
		DATE(tran_date)<='$date2' AND 
		t.unit_serial=$netw AND 
		t.pulse_channel in (1, 2, 3, 4)
) a
group by customer_name, account_no, customer_no, unit_serial, pulse_channel, datei, tmx_hour, tmx_minutes  
ORDER BY txm_hour ASC

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asaidiAuthor Commented:
Hi
thanks for your time but still empty result..
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ralmadaCommented:
what do you mean by "empty result"

Can you provide more information on what are you trying to achieve. Please post some sample data from your tables and the expected result (what you want the query to output).
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asaidiAuthor Commented:
empty result means no data displayed
i have an option in my script
when the user choose a customer and when a user choose all the customers
for the customer it is working fine all the calcul is correct but for the second no
please find attached sql data sorry it is a bit big
data.sql
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