How to exclude rows with multiple conditions and "not in" in SAS? - sql

Question

I have a doubt in a query, I thought the solution would be simple but I realized that it is not.
I have table A and the cod field is the main key.
COD
CATEGORY
PRODUCT
IND
SOURCE
1
Two
black
Y
ANEXO8
2
Two
black
Y
ANEXO8
3
Two
black
N
ANEXO8
4
Two
red
Y
ANEXO8
5
Two
red
Y
ANEXO8
6
Two
red
N
ANEXO8
7
Two
yellow
Y
ANEXO8
8
Two
yellow
N
ANEXO8
9
Two
green
N
ANEXO8
10
Two
green
N
ANEXO8
11
Two
pink
Y
ANEXO8
12
Two
pink
Y
ANEXO8
13
Two
pink
N
ANEXO8
14
Two
gray
N
SAS
15
Two
gray
N
SAS
16
Two
gray
N
SAS
What I am trying to get is to first filter out all rows that have the field "ANEXO8", then to exclude all rows that have the field PRODUCTequal to "black", finally to exclude all rows that have the field product equal to "red" only if the field IND is equal to "Y".
The resulting table would be equal to:
COD
CATEGORY
PRODUCT
IND
SOURCE
6
Two
red
N
ANEXO8
7
Two
yellow
Y
ANEXO8
8
Two
yellow
N
ANEXO8
9
Two
green
N
ANEXO8
10
Two
green
N
ANEXO8
11
Two
pink
Y
ANEXO8
12
Two
pink
Y
ANEXO8
13
Two
pink
N
ANEXO8
14
Two
gray
N
SAS
15
Two
gray
N
SAS
16
Two
gray
N
SAS
I have tried to perform a single query:
proc sql;
create table test as
select * from A
where SOURCE = "ANEXO8"
and PRODUCT not in ("black")
and (PRODUCT not in ("red") and IND ne "Y"));
run;
But I don't get the result I want, do you know what I could do, or maybe where am I going wrong?

Answer 1

Try this
proc sql;
create table test as
select * from A
where SOURCE = "ANEXO8"
and PRODUCT not in ("black")
and not (PRODUCT in ("red") and IND = "Y"));
run;
You have to be careful with how the parenthesis are actually influencing the negation

Answer 2

Your logic is close but the last and should be or:
create table test as
select * from A
where SOURCE = 'ANEXO8' and
PRODUCT <> 'black' and
(PRODUCT <> 'red' or IND <> 'Y');
This is simply a logic error. Do note other differences:
NOT IN seems over kill when "not equals" is sufficient.
The SQL Standard string delimiter is a single quote not a double quote.
The SQL Standard not-equals operator is <>.