I always drop temp tables/views/variables when done with that routine. Maybe 
keeping an excel file/or table with column names and datatypes would help?

Dan Goldberg

From: 'Karen Tellef' via RBASE-L <rbase-l@googlegroups.com>
Sent: Monday, August 3, 2020 1:40 PM
To: rbase-l@googlegroups.com
Subject: [RBASE-L] - Best practices?

Hard to believe in my decades of programming that this is the first time this 
has happened.  Just wondering if other programmers have tips on this situation 
for the future.  And I'm kinda bored this afternoon so thought I would post.

History:  I work on this company's stuff with another programmer.  We work 
independently, each of us handling different "areas" of the business.  The 
company's contact himself also does a bit of programming.  So 3 of us writing 
programs.

I write a new program today, works great for me, he keeps claiming it doesn't 
work for him, giving him my "no data to report" message.  He exits and comes 
back in, never works.  I finally ask him exactly the process he's going thru, 
and I find out that he will run another program immediately before running this 
program.  Aha, a clue.

Guess what.  In that other program (written by the other programmer), he 
creates a temp table (and doesn't drop it) using the same column name that I 
have in my temp table, but as a different datatype!  So my temp table was never 
created because of the structure error, and it reports no data!

So what's the best way to prevent this?  I was thinking of things like:

1.  Each of us using temp column names using our initials (like: ktQty INT).  
But even with that, there's no guarantee that I'll remember I used a "ktQty" as 
a Double once, and as an Integer another time.

2.  I could search program code for occurrences of each "new" temp column name 
I want to use to see if any other program uses that name.

3.  I could only use permanent column names, altho using the permanent name 
"Qty" is not as descriptive as a temp column name like:  tmpQtyToShipByMonthend


But in reality there's 3 "easy" things I could do:

1.  We could drop our temp tables at the end of our programs.  None of us do 
this. I like leaving them around in case I run something from the menu and want 
to get to the R> prompt to see temp table data.  Do you all drop temp tables?

2.  After every "create temp table" do a "select ... from sys_tables" to see if 
the temp table exists.   Seems the easiest, doesn't it?   Again, do any of you 
routinely do this?

3.  Or.. I can figure that since this has happened once in the >20 yrs that 
I've worked on that account, figure that it's most likely not going to happen 
again so don't worry about it.


Just some Monday musings......


Karen





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