Knowledge Drop

Can I remove LookML elements like `case` in an extending view?


Userlevel 5

Last tested: Mar 15, 2021

 

No. You can only add new LookML elements in an extending view but you cannot remove existing ones

For example, if we ave the following in our original/extended view:

dimension: case_when_test {

type: string

case: {

when: {

sql: ${TABLE}.genre = "Drama" ;;

label: "Case1"

}

when: {

sql: ${TABLE}.genre = "Comedy" ;;

label: "Case2"

}

when: {

sql: ${TABLE}.genre = "Action" ;;

label: "Case3"

}

else: "Other"

}

}

 

And attempt the following in order to reduce the number of the LookML case whens in the extending view, this is not going to work - the dimension is still going to have all the case whens from the original view.

dimension: case_when_test {

type: string

case: {

when: {

sql: ${TABLE}.genre = "Drama" ;;

label: "Case1"

}

else: "Other"

}

}

 

As a workaround, we would want to use SQL CASE WHEN in the sql parameter in both the original view and the extending view.

 

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