topic Re: sas contains function cannot work properly in SAS Data Management

sas contains function cannot work properly

Crubal — Thu, 22 Mar 2018 21:10:53 GMT

Hi,

I have table t1 with 3 columns: Location / Number / Attribute. For each combination of (Location & Number), it has several attributes. Table t1 is shown as below:

Table t2 is shown as below:

We would like to obtain a table t3 if t2.Attribute is same or part of t1.Attribute.

I try the following code:

	Proc Sql;
		Create Table t3 as select distinct
			A.*
		from t1 A, t2 B
		where A.Attribute contains B.Attribute
		order by A.Location, A.Number;
	Quit;

	Proc Sql;
		Create Table t3 as select distinct
			A.*
		from t1 A, t2 B
		where find(A.Attribute, B.Attribute) >0
		order by A.Location, A.Number;
	Quit;

However, table t3 looks like the following:

In t3, for 'Location' = L1 and 'Number' = 1040, 'Attribute' should include '2DOUBLEBEDS' but not, as table t2 has 'DOUBLEBED' as Attribute (row 😎

Is there anything wrong with my code?

Thank you!

Re: sas contains function cannot work properly

Kurt_Bremser — Thu, 22 Mar 2018 21:17:43 GMT

Please do not post data in pictures. How shall we recreate your datasets as they are?

Post data in data steps with datalines, and run your code against the resulting datasets for control.

Re: sas contains function cannot work properly

Astounding — Thu, 22 Mar 2018 21:30:57 GMT

A.Attribute and B.Attribute almost certainly contain trailing blanks. The FIND function is not removing those.

The TRIM function can remove trailing blanks (some SQL implementations have a different method for trimming trailing blanks), and the STRIP function (if available) removes both leading and trailing blanks. Within FIND, try using trim(A.Attribute) and trim(B.Attribute).

Re: sas contains function cannot work properly

Crubal — Thu, 22 Mar 2018 21:34:12 GMT

Thanks @Kurt_Bremser Will take care next time!

Re: sas contains function cannot work properly

Crubal — Thu, 22 Mar 2018 21:36:30 GMT

Thanks @Astounding

As you mentioned there is space after 'DOUBLEBED'.

I changed the code to:

	Proc Sql;
		Create Table t3 as select distinct
			A.*
		from t1 A, t2 B
		where trim(A.Attribute) contains trim(B.Attribute)
		order by A.Location, A.Number;
	Quit;

It returns correct table.

Thanks!