How To Create A Date Filter In Qlikview

QlikView - Data files (QVD)

I of the important features of QlikView, which makes it so distinguished is the power to store very large amount of information in a very compressed size and shop it along with the QlikView documents. Therefore, in one case the document is created nosotros need not connect to the information source, equally the data is already stored forth with the layout of the certificate. This is achieved through QVD file, which is a apartment file stored with the .qvd extension. A QVD file stores information for one QlikView document and it is created using the script editor available in the QlikView document.

Advantages of Using QVD Files

The advantages of using QVD files in QlikView are as follows −

Faster Loading of Data
Gracefully support scaling up as the data volume grows
Used in incremental load
Data from multiple sources can be clubbed to one data set up
Excerpt data in parallel

Creating QVD Files

QVD files are created using the STORE argument during the loading of QlikView files. This statement creates a single qvd file, which gets stored in the specified location as a file; split up than the QVW file through which it is created.

Given below is an example of storing the qvd file after the data is loaded into the QlikView document past reading a source file.

Using QVD Files

A QVD file is loaded to a QlikView document in a similar mode as other files like CSV, Excel and delimited files are used. We use the the Open option available under the File menu and scan for the QVD file we created before. On opening information technology gives us a window to see the data, select the column headers and do any data transformation required

open_qvd_file

QVD File Loader Script

On clicking Finish, the edit script window appears which shows the code used to load the QVD file. Nosotros can edit this lawmaking further. For example, to get only the few of the columns to be displayed or use any inbuilt function etc. Click cease to load the file into the current QlikView document. Save the QlikView certificate as use_qvd.qvw.

qvd_file_load_script

Displaying Data from QVD File

Reload the certificate by using Control+R and choose the menu pick Layout → New Sheet Objects → Tabular array Box. A window appears showing all the columns from the table present in the QVD file. Select "Add All" to add all the columns to the brandish table. Apply the "Promote/Demote" option to change the gild of the columns. Click "Finish". The post-obit screen appears showing the content of the QVD file.

qvd_file_data_table