topic Re: what is exits? in QlikView

what is exits?

gkcchowdary — Thu, 25 Jun 2015 05:38:26 GMT

What is exits function and not exists examples

Re: what is exits?

qlikviewwizard — Thu, 25 Jun 2015 05:40:26 GMT

gkcchowdary

Exists operator as same as IN.

Re: what is exits?

Kushal_Chawda — Thu, 25 Jun 2015 05:43:41 GMT

http://qlikviewmaven.blogspot.in/2009/01/qlikview-exists-function.htmlPlease look into this

Re: what is exits?

jsingh71 — Thu, 25 Jun 2015 05:49:32 GMT

exists(field [ , expression ] )

Determines whether a specific field value exists in a specified field of the data loaded so far. Field is a name or a string expression evaluating to a field name. The field must exist in the data loaded so far by the script. Expr is an expression evaluating to the field value to look for in the specified field. If omitted, the current record’s value in the specified field will be assumed.

Examples:

exists(Month, 'Jan') returns -1 (true) if the field value 'Jan' is found in the current content of the field Month.

exists(IDnr, IDnr) returns -1 (true) if the value of the field IDnr in the current record already exists in any previously read record containing that field.

exists (IDnr) is identical to the previous example.

Load Employee, ID, Salary from Employees.csv;
Load FirstName& ' ' &LastName as Employee, Comment from Citizens.csv where exists (Employee, FirstName& ' ' &LastName);
Only comments regarding those citizens who are employees are read.

Load A, B, C, from Employees.csv where not exists (A);
This is equivalent to performing a distinct load on field A.

Source: QlikView Help.

Re: what is exits?

qlikviewwizard — Thu, 25 Jun 2015 05:51:17 GMT

Hi Please check this link.

Dual & Exists – Useful Functions

Re: what is exits?

Thu, 25 Jun 2015 05:51:42 GMT

Exists function tell us whether a specific field value exists in a specified field of the data loaded so far or not.

Eg:Exists(field_name,'value')

if the 'value' exists in field_name then it returns true, else false.