Oracle 10g - Metric Calculations

Question

I am trying to support a query that creates a report(hourly) to be used in Excel and some of the stats may be incorrect.A user is prompted to enter a start date from when to begin searching for records.The goal is to generate measurements on a process. The process begins when a customer has added his email to our website. Then he is sent an email for verification.However,problems sending the email may occur indicated by the TRANS_STATUS codes. DATE_EMAIL_ADDED is when the customer fills out our website and submits his email. DATE_EMAIL_SENT is when the email was validated and the time the notification was sent. The dates are timestamps. Also, I would like some thoughts on the calculations to make sure they are correct. Any suggestions on optimizing this query or a different approach to the solution is appreciated.
-- DDL for Table TRANS_DTL
{code
CREATE TABLE "TRANS_DTL"
(     "TRANS_ID" NUMBER(22,0),
     "TRANS_TYPE" VARCHAR2(5),
     "START_TIME" DATE,
     "END_TIME" DATE,
     "TRANS_STATUS" VARCHAR2(3)
code}
-- DDL for Table EMAILINGS
{code
CREATE TABLE "EMAILINGS"
("ATTEMPTS_MADE" NUMBER,
     "DATE_EMAIL_SENT" DATE,
     "DATE_EMAIL_ADDED" DATE
select
A.DATE_EMAIL_ADDED,
A.NUM_EMAIL,
A.EMAIL_TYPE,
A.AVG_TIME_TO_EMAIL,
A.FIRST_ATTEMPT_RATIO,
B.TOT_TXNS,
B.TXN_Success_Rate,
B.TXN_API_Exception_Rate,
B.TXN_System_Exception_Rate,
B.AVG_Duration
FROM
(select TO_DATE(to_char(DATE_EMAIL_ADDED,'MM/DD/YYYY HH24'),'MM/DD/YYYY HH24') DATE_EMAIL_ADDED,
w.email_type EMAIL_TYPE,
count(*) NUM_EMAIL,
avg((DATE_EMAIL_SENT - DATE_EMAIL_ADDED) * 1440) AVG_TIME_TO_EMAIL,
sum(case when ATTEMPTS_MADE = 1 then 1 else 0 end) / count(*) first_attempt_ratio
from EMAILINGS W
where DATE_EMAIL_ADDED >= to_date('&date','MM/DD/YYYY')
group by TO_DATE(to_char(DATE_EMAIL_ADDED,'MM/DD/YYYY HH24'),'MM/DD/YYYY HH24')
,w.email_type
) A,
(select
Start_Date,
count(*) TOT_TXNS,
sum(case when TRANS_STATUS = '000' then 1 else 0 end) / count(*) TXN_Success_Rate,
sum(case when TRANS_STATUS = '997' then 1 else 0 end) / count(*) TXN_API_Exception_Rate,
sum(case when TRANS_STATUS = '999' then 1 else 0 end) / count(*) TXN_System_Exception_Rate,
avg(elapsed_seconds) AVG_Duration
from (
select
to_date(to_char(Start_Time, 'MM/DD/YYYY HH24'),'MM/DD/YYYY HH24') Start_Date,
TRANS_STATUS,
trunc(to_number(substr((a.End_Time-a.Start_Time),1,instr(a.End_Time-a.Start_Time,' ')))) *86400 +
substr((a.End_Time-a.Start_Time),instr((a.End_Time-a.Start_Time),' ')+1,2)*3600 +
substr((a.End_Time-a.Start_Time),instr((a.End_Time-a.Start_Time),' ')+4,2)*60 +
substr((a.End_Time-a.Start_Time),instr((a.End_Time-a.Start_Time),' ')+7,2) +
substr((a.End_Time-a.Start_Time),instr((a.End_Time-a.Start_Time),' ')+10,6)*0.000001 elapsed_seconds
from TRANS_DTL a
where
TRANS_TYPE = 'ESP'
and Start_Time >= to_date('&date','MM/DD/YYYY')
and end_time is not NULL
group by Start_Date) B
where A.DATE_EMAIL_ADDED = B.START_DATE
order by B.START_DATE;
DATE_EMAIL_ADDED NUM_EMAIL EMAIL_TYPE AVG_TIME_TO_EMAIL FIRST_ATTEMPT_RATIO TOT_TXNS TXN_SUCCESS_RATE TXN_API_EXCEPTION_RATE TXN_SYSTEM_EXCEPTION_RATE AVG_DURATION(sec)
1/10/2011          116               WE          5.59               99.14               127               89.76%          10.24%               0.00%                    9.31
code}

Answer 1

Nicosa wrote:
No, it uses curly brackets, like that {noformat}{noformat}.No, it can be both. either {noformat}{noformat} before and after the code OR {noformat}[code]{noformat} before and {noformat}[/code]{noformat} after.