Script for check Table Structure

[sspawar88]

Hi Folks,

Thanks in advance.

How I create a loop to check whether I'm getting right table structure or not?

In one folder on server 'E:\Data\..' i get 3 excel file which moved in 'D:\Data\..' by batch files. from  'D:\Data\..' Qlikview starts to fetch data.

but before moving in 'D:\Data\ i want check the structure of files. so how can i write script to check structure?

Emp:

key	emp_id	emp_name
1	EMP1	A
2	EMP2	B
3	EMP3	c

Source:

key	date	source	location
1	22/4/2016	postgres	Uk
2	15/7/2016	teradata	Us
3	12/3/2015	oracle	Sng

Period:

Year	Month	day	Mng_id	key
2016	jan	3	567	1
2017	dec	4	345	2
2017	feb	5	234	3

[zhadrakas]

You can read the XML metadata of the QVD file to check field existance such as this example

QvdFieldHeader:
LOAD FieldName
FROM F:\YOURPATH\Emp.qvd (XmlSimple, Table is [QvdTableHeader/Fields/QvdFieldHeader]);

For i = 0 to NoOfRows('QvdFieldHeader')-1

LET vFieldName = peek('FieldName', $(i));
if FieldIndex('FieldName',peek('FieldName', $(i))) > 0 then
Trace 'Field ' & '$(vFieldName)' & ' exists';
LET vStructureOK = true();
else
Trace 'Field ' & '$(vFieldName)' & ' is missing';
LET vStructureOK = false();
end if;

next

if $(vStructureOK) = true() Then
//Load from QVD
ELSE
//....
END IF

//cleanup
LET vFieldName =;
LET vStructureOK =;

EXIT Script;