The lower bound will be 0 (for peek) or 1 for row number. The function NoOfRows('TableName') will in script return the number of rows loaded, so the upper bound would by that value (or value - 1 for peek).
Let zSize = NoOfRows('TableName');
For zi = 0 To zSize - 1
Let zValue = Peek('MyField', zi, 'TableName');
... do something here ...
Set zi = ;
Set zSize = ;
Set zValue = ;
(Or have I misunderstood you?)
NoOfRows() is a function I have used in another scenario already. I can well use that.
I merely think you have misunderstood me insofar as your code seems to be for something more complicated than I want - in the end, it is going to be quite complicated, but not at this stage. I will explain the entire scope of this task so you can better understand just what I need:
- I have, with some help from swuehl, developed a code that works fine for ONE employee. It involves
- a MAPPING LOAD
- several LOAD statements (from different tables, some of them concatenated)
- a "blowup" of a table (to one_record_per_day)
- The next step is to execute that code in a LOOP for every employee we have
=> I have already developed a LOAD from the masterdata table that gives me 1 record per employee
=> Now I want to build the LOOP over that table
<=> However, that LOOP would be very large and probably quite hard to oversee. I wonder whether it might not be a better idea to
- develop a subroutine (well, that would just be the code I already have working on ONE employee_nr)
- build a LOOP over all the lines of that masterdata_table and in that LOOP
- define a variable with the emp_id I find in that line
- call the subroutine and pass that id_variable as a parameter to the subroutine.
I have very limited experience with subroutines, but I think there's nothing much to it, it's basically just a script.
Do you know of any pitfalls I have to keep in mind (like any customary script_commands that will NOT work inside a subroutine)?
Thanks a lot!
I think that's better.
I thought I was now underway - I would first develop the code to - still for ONE employee - take the data RESIDENT from my base_load and via SQL from the second database_table - but now I am stopped by a thing that should actually be very simple - the way big projects often fail because of very little things...
=> I still cannot seem to define (or rather, I cannot check that I have successfully defined) a variable in the script:
- I have a RESIDENT LOAD now that loads just one record, for one employee
- In the second table, I cannot count on the row_nrs being the same, so I have to filter that second LOAD using
=> To that end I have to somehow put the emp_id (which is in a field in that one loaded record) in a variable.
<=> Using the usual syntax with LET, I get no error, but I cannot see that variable on GUI-level - and I don't trust in its existence if I cannot see it...
Can you tell me what I am doing wrong there?
Thanks a lot!
P.S.: OK, I have it - it's awesome how reading up in the help_file often helps - sometimes combined with some guessing at what could be the right keyword to look for - in this case, the PEEK() function helped: In this scenario, I just loaded only one record, so I don't have to specify anything else, just the field_name.