topic Re: proc sql: how to in SAS Procedures

proc sql: how to

rpg163 — Mon, 14 Nov 2011 11:39:58 GMT

Hi,

I wanna get data from database A in sql procedure.

If the observation satisfy any one of three statements, it is suppose to be choose, like follows. But I do know how to deal with that.

proc sql;

create table C as

select A.*

from A, B

where (A.stkcd not in(select stkcd from B)) or (A.stkcd=B.stkcd and A.year<B.year_s) or (A.stkcd=B.stkcd and A.year>B.year_e);

quit;

Anyone knows? Thanks in advance.

proc sql: how to

LinusH — Mon, 14 Nov 2011 11:57:37 GMT

Conditions 2 and 3 are using regular inner join syntax, but condition 1 is a sub-query.

Try to use a full table specification in that sub-query instead of an alias (if you are using a such - your code aren't your original one I guess?).

/Linus

proc sql: how to

rpg163 — Mon, 14 Nov 2011 13:30:08 GMT

no, and I don't know if "or" works in sql

what I am trying to do is incorporating the follow three queries into one

proc sql;

create table C1 as

select A.*

from A

where A.stkcd not in(select stkcd from B)

quit;

proc sql;

create table C2 as

select A.*

from A,B

where A.stkcd=B.stkcd and A.year<B.year_s ;

quit;

proc sql;

create table C3 as

select A.*

from A,B

where A.stkcd=B.stkcd and A.year>B.year_e;

quit;

proc sql: how to

LinusH — Mon, 14 Nov 2011 14:25:13 GMT

Do you have any problem with job run time?

If not, you could just append the select results using Outer Union Corresponding.

And yes, your could use OR, but SQL has a hard time optimizing those joins.

But you still have a problem mixing an sub-query filter and ordinary joins with or's.

I think that you can have condition 2 and 3 in the same select, but condition 1 in a separate select.

proc sql;

create table C as

select A.*

from A, B

where A.stkcd=B.stkcd and A.yearB.year_e

outer union corresponding

select A.*

from A

where A.stkcd not in(select stkcd from B)

;

quit;

Re: proc sql: how to

rpg163 — Mon, 14 Nov 2011 16:01:17 GMT

It do works!

Many Thanks!

well, still one question, when you mention job run time I am not sure what you mean

Re: proc sql: how to

LinusH — Mon, 14 Nov 2011 21:22:20 GMT

What I meant was that if you were having any perormance issues, i.e. if the job was taking too much time, or took too much of resources in the system (CPU/memory).

/Linus

Re: proc sql: how to

rpg163 — Tue, 15 Nov 2011 03:52:05 GMT

I get it. Thank you!