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Dataset diasble NULL values in column

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Contributor
Posts: 67

Dataset diasble NULL values in column

[ Edited ]

Hi,

 

can I disable adding rows in which some variables are missing into  my dataset?

 

Thanks

PROC Star
Posts: 1,411

Re: Dataset diasble NULL values in column

When do you experience null values being inserted into your data?

Contributor
Posts: 67

Re: Dataset diasble NULL values in column

Haha good point, I mean inserted rows with some columns that contains missing values.

Respected Advisor
Posts: 4,802

Re: Dataset diasble NULL values in column

[ Edited ]

@Matt3

Use a WHERE clause where you exclude all observations having one or multiple variables with missing values.

You can use the CMISS() function for such a test. 

http://support.sas.com/documentation/cdl/en/lefunctionsref/69762/HTML/default/viewer.htm#p1tth4ltf64...

Contributor
Posts: 67

Re: Dataset diasble NULL values in column

I dont need excluding observation but prevent from not inserting them.

I found integrity constrains in proc datasets, hovewer I cant find option for preventing observation from deleting.

 

Respected Advisor
Posts: 4,802

Re: Dataset diasble NULL values in column

@Matt3

Please explain in detail what you have and what you're trying to achieve so can understand your problem and give you a suitable answer.

 

Using Integrity Constraints will protect your table against Inserting/Updating rows with values you don't want. BUT if an integrity constraint gets hit your job will throw an error and fail. Is that what you want?

 

There are no integrity constraints for "do not delete" except for referential integrity which prevents deletion of parent records when there are dependent child records in another table.

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