If you know SQL, you might never look at using MERGE. And if you know data step programming very well, you might never bother learning how to do an SQL join. But each method has its own advantages and it pays to know when it is best to use either of the two methods.Ted A. ...
proc sql ; create table Temp1_1 as select distinct a.*,b.BIRTHDAT from ICF as a left join DM as b on a.cn =b.cn and a.dn =b.dn ; quit; Merge If b; data Temp1_2; merge ICF(in=a) DM(in=b); by cn dn; if b ; run; <Proc Sql实现同样的效果> proc sql ; create tabl...
如果需求稍微复杂一些,比如:筛选试验组、FAS 集、存在合并用药、实验室检查基线异常无临床意义的不良事件的观测,使用 DATA 步虽然也能实现,但会使代码更加复杂且难以理解,使用 SELECT 子查询语句就可以很直观地体现代码的真实意图: proc sql noprint;create table test3asselect usubjid,aedecodfromadam.adae where...
要在Windows上运行６４位Redis ，可以从https://github.com/MSOpenTech/redis 获取一份Redis ...
PROC SQL; CREATE TABLE Output_table AS SELECT a.Name, a.Gender, a.Birth, b.Pet FROM Input_table AS a OUTER JOIN Input2 AS b ON a.Name = b.Name; QUIT; If the user wants to use a DATA step to merge two tables, both tables need to be sorted by the field you will be merging...
There are a few possible answers you might come up with, so if you post your decision you'll find there are plenty of people who could suggest a solution. Data never sleeps 0 Likes Astounding PROC Star Re: Proc SQL & Data Step INNER JOIN... Posted 10-15-2012 09:03 AM (...
Step 1: Installprocdir First we add the module to our project. ~$ cd myRepo/ ~/myRepo$ npm install procdir Step 2: Create a stored procedure Then we create a file and add a stored procedure definition to it. ~/myRepo$ mkdir ./sql ~/myRepo$ cd ./sql ~/myRepo/sql$ touch my...
outerjoinisrequested.WiththeintroductionoftheHashObjectinSASV9,hashing-made-easymethods arenowavailableintheDATAstep.Thispaperdemonstrateshowaslightaugmentationtosome establishedhashtablelook-upcodecanbeusedasanefficientalternativetothePROCSQLleftjoin. INTRODUCTION ...
I have some code that runs fine but when i add in the case statement on Proc SQL it 'falls over'. Can anyone please advise where I am going wrong with the complete statement? PROC SQL;create table work.red asselect num,month_date,arrs,remaining_months, platform,valuation,Type, count(...
proc sql; create table PC&i as select P.CHILD as Child&i, C.CHILD as Child%eval(&i+1) from (HIERARCHY P, HIERARCHY C) where (P.CHILD = C.PARENT) ; quit; %end; %mend; %MULTIPLY; Seen in the SQL join in the macro MULTIPLY, the HIERARCHY dataset is joined with itself so that...