Random Comments:
Easy Thing #1: I drop temp tables when leaving the form. If I want to
look at the contents during processing, I have "Hide on Startup"
pushbuttons that each BROWSE a table.
To make them visible , I have a transparent flat 30x30 enhanced speed
button that runs PROPERTY cidHIDDEN% VISIBLE 'TRUE'. I put that button
in the upper left corner of my forms; when I mouse over it, its outline
is visible.
Easy Thing #2: Use the function (CHKTABLE('tblview')) to test for
existence before you try to create it.
Return Value
Status
0
table/view does not exist
1
permanent table
2
temporary table
3
server table
4
dBASE table
5
permanent view
6
temporary view
I create temp tables from a permanent table using PROJECT TEMPORARY
tTableName FROM TableName USING * +
WHERE LIMIT = 0. That way columns are consistently defined.
If I need additional columns, I use ALTER TABLE tTableName ADD COLUMN
NewColumn [def...]
Doug
On 8/3/2020 3:40 PM, 'Karen Tellef' via RBASE-L wrote:
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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