topic Re: how to free the variable memory in QlikView

how to free the variable memory

Thu, 29 Aug 2013 09:55:06 GMT

Hi all

how to free the variable memory

Re: how to free the variable memory

MayilVahanan — Thu, 29 Aug 2013 10:00:42 GMT

Are you mentioning about script variable?

If so,

Try like this

Set varialbeName = ;

Re: how to free the variable memory

CELAMBARASAN — Thu, 29 Aug 2013 10:00:46 GMT

Try with this

SET vVariableName=null();

SET vVariableName=;

Re: how to free the variable memory

Fri, 30 Aug 2013 04:45:27 GMT

Thank you

For reply,Both are correct

But what is difference between

Let vVariableName=null();

LET vVariableName=;

(and)

SET vVariableName=null();

SET vVariableName=;

Re: how to free the variable memory

MayilVahanan — Fri, 30 Aug 2013 10:33:30 GMT

From help, you can understand clearly

The let statement has been created as a complement to the set statement, used for defining script variables. The let statement, in opposition to the set statement, evaluates the expression on the right side of the ' =' before it is assigned to the macro variable.

The word let may be omitted, but the statement then becomes a control statement. Such a statement without the keyword let must be contained within a single script row and may be terminated either with a semicolon or end-of-line.

The syntax is:

let variablename =expression

Note that the word let may be omitted.

Examples:

Set x=3+4;

Let y=3+4

z=$(y)+1;

$(x) will be evaluated as ' 3+4 '

$(y) will be evaluated as ' 7 '