topic Re: Syntax for Field's name in INLINE in QlikView

Syntax for Field's name in INLINE

Anonymous — Tue, 24 Oct 2017 13:02:21 GMT

Hi All

I have inline load as under

Mtrl:
Mapping
LOAD * INLINE [
INo, CName
1, 0
2, ThLow
3, ThMin
4, ThMed
];

Where CName column is existing column in database.

What syntax should I use so I can evaluate column CName

Thanks in advance

Re: Syntax for Field's name in INLINE

avinashelite — Tue, 24 Oct 2017 13:05:21 GMT

If the data set is same you want the mapping of Name to INo ...Just interchange the order of columns

Re: Syntax for Field's name in INLINE

Peter_Cammaert — Tue, 24 Oct 2017 13:19:50 GMT

And you can do this without changing the INLINE string block, just

LOAD CName, INo INLINE [...

will reverse the column order.

Re: Syntax for Field's name in INLINE

Peter_Cammaert — Tue, 24 Oct 2017 13:24:03 GMT

Mind you, a Mapping table will be invisible to any and all except to the ApplyMap() function. ApplyMap() can use any Mapping table defined before the call is made to translate one value into another at a time.

Mapping tables also cease to exist at the end of the current script run. So the QlikView User Interface cannot make use of them. ApplyMap() therefor is a script-only function.

Re: Syntax for Field's name in INLINE

Anonymous — Tue, 24 Oct 2017 13:47:29 GMT

In fact I need the value for specific column (ThLow, ThMin, ThMed) when INo is 1,2 or 3 resp.

Meaning if INo = 1 than 0

INo=2 than whatever the value of ThLow

INo=3 than whatever the value of ThMin

INo=4 than whatever the value of ThMed

Mtrl:
Mapping
LOAD * INLINE [
INo, CName
1, 0
2, ThLow
3, ThMin
4, ThMed
];

Where CName column is existing column in database.

What syntax should I use so I can evaluate column CName

Re: Syntax for Field's name in INLINE

avinashelite — Tue, 24 Oct 2017 14:01:51 GMT

In CName you have values like 0,1,2 or ThLow if its 1,2 etc then

try like this in your FACT table

applymap('Mtrl',CName) as name

The ApplyMap function is used for mapping any expression to a previously loaded mapping table. The syntax is:

applymap('mapname', expr [ , defaultexpr ] )

where:

mapname is the name of a mapping table that has previously been created through the mapping load or the mapping select statement (see Mapping). Its name must be enclosed by single, straight Quotation Marks in Scripting.

expr is the expression, the result of which should be mapped.

defaultexpr is an optional expression which will be used as a default mapping value if the mapping table does not contain a matching value for expr. If no default value is given, the value of expr will be returned as is.

Examples:

// Assume the following mapping table:

map1:

mapping load * inline [

x, y

1, one

2, two

3, three ] ;

ApplyMap ('map1', 2 ) returns ' two'

ApplyMap ('map1', 4 ) returns 4

ApplyMap ('map1', 5, 'xxx') returns 'xxx'

ApplyMap ('map1', 1, 'xxx') returns 'one'

ApplyMap ('map1', 5, null( ) ) returns NULL

ApplyMap ('map1', 3, null( ) ) returns 'three'

Re: Syntax for Field's name in INLINE

Peter_Cammaert — Tue, 24 Oct 2017 14:15:46 GMT

Indeed, but your explanation is missing a few key elements. For example, what is INo? It seems to be in control but you're not telling us whether it is a selection in the UI (a variable), a column in the same row in the same database table, a column in another database table, something else...

If INo is a column in the same row as CName, then you can use this in your script instead of the Mapping table:

Pick(INo, 0, ThLow, ThMin, ThMed) AS CNameValue,

or as an expression in a UI object:

=Pick(INo, 0, ThLow, ThMin, ThMed)

Best,

Peter

Re: Syntax for Field's name in INLINE

Anonymous — Tue, 24 Oct 2017 14:44:06 GMT

Hi Peter

This is the one I want.

With this, I do not need even Mapping load.

Thanks for great help.

Re: Syntax for Field's name in INLINE

Anonymous — Tue, 24 Oct 2017 14:44:53 GMT

Hi Avinash

I appreciate your suggestion and time.

Many Thanks for your time.