How to show only those rows that contain missing values

Hello dear KNIME community,

I have quite simple question, here is the example (table format; semicolon séparated):

cherry; apple; peach
2; 3; 4;
?: 1; 3;
1; 1; 1;
?; ?; 0;
2; ?; 1;
1; 3; ?;
4; 4; 4.

I would like to show (or to select) ANY rows whith existing missing values. The output should be:

{ cherry; apple; peach}
?: 1; 3;
?; ?; 0;
2; ?; 1;
1; 3; ?;
Which node could I use to do that? Thank you in advance! I tried “Rule-based Row Filter”, with missing option set TRUE, but it is not giving me the desired result, it just shows all rows that are simultaneously empty.

Hi @Milovanova

Did you try: MISSING $cherry$ OR MISSING $apple$ OR MISSING $peach$ => TRUE

gr. Hans

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Hi @Milovanova

Please find below a generic solution regardless of the structure of the table :wink:

20200511 Pikairos How to show only those rows that contain missing values.knwf (23.1 KB)

Hope this is of help.

best regards

Ael

4 Likes

Thank you for your solution! it worked

2 Likes

yes this worked too, thx!

1 Like

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