SQL command to find the last record on an audit table Crystal report Oracle 10g

can crystal use the data warehouse functions?

select column from (
select column, row_number() over(partition by item order by some_date desc) myRowNum
)
where myRowNum=1

Here is my SQL statement:
select
iau.item_group,    
iau.company,        
iau.location,      
iau.item,          
iau.r_date,        
iau.r_time,        
iau.fld_nbr,        
iau.before_image,
iau.after_image,
iau.operator_id,        
idi.fld_name
from lsfmigd.icaudit iau, lsfmigd.icdict idi
where iau.fld_nbr = idi.fld_nbr and
iau.item_group = 'HOSP' and
iau.company >= 0 and
iau.location = '     ' and      
iau.item='{?Item}';  

notes
 '{?Item}' is a SQL command parameter
I used the 'explain plan for' Oracle feature to create a query which uses the most efficient index columns

Just add the row_number() call to that select, then wrap an outer select around that with the where clause I provided.

I can't test it but something like below.  I guessed at ordering by r_date.

select
item_group,     
company,        
location,       
item,           
r_date,         
r_time,         
fld_nbr,        
before_image,
after_image,
operator_id,        
fld_name
from 
(
select
iau.item_group,     
iau.company,        
iau.location,       
iau.item,           
iau.r_date,         
iau.r_time,         
iau.fld_nbr,        
iau.before_image,
iau.after_image,
iau.operator_id,        
idi.fld_name,
row_number() over(partition by iau.item order by iau.r_date desc) myRowNum
from lsfmigd.icaudit iau, lsfmigd.icdict idi
where iau.fld_nbr = idi.fld_nbr and
iau.item_group = 'HOSP' and
iau.company >= 0 and 
iau.location = '     ' and       
iau.item='{?Item}'
)
where myrownum=1;

Select allOpen in new window

I also suppose you could just use the MAX call and group by all the other columns.

Here is my output

iau-ITEMAUDIT-sql.pdf

You can add the r_time to my order.  You also have the option of converting the date and time columns into an Oracle date data type and use that.

Look up the TO_DATE function if you are interested.

I need help modifying the SQL so that the query locates only the last records updated by date and time.

What about what I posted in http:#35706968?

just change:
row_number() over(partition by iau.item order by iau.r_date desc) myRowNum

to
row_number() over(partition by iau.item order by iau.r_date desc, iau.r_time desc) myRowNum

Hi slightwv,

I have to research your solution to have a better understanding.  I'm new to SQL Plus and don't understand yet what your code is doing.  I'll try it and let you know how it goes.  Thanks for posting so quickly to my question.

BRAVO GENIUS!!!  This works perfectly.  Thank you for your help

No problem.  Glad it worked for you.