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...
Explore the various DATA step merge and PROC SQL join processes. This presentation examines the similarities and differences between each, and provides examples of effective coding techniques. Attendees examine the objectives and principles behind merging and joining, as well as the coding constructs ...
At just under 7 minutes, it walks you through the steps of merging data sets in SAS using PROC SQL: DATA step merge and SQL join handles duplicate key values differently, which is described and discussed thoroughly, both in documentation, papers and forums. I think that SQL is more ...
On x.ID= y.ID; Quit; 坦白来讲,同时给我 merge by 和 proc sql,我会选 sql。上面的输出数据集是没问题的,以 A 中 id 作为 left join 的 key variable,同时搜索 B 中有相同 id 取值的行,进行左连接横向匹配合并。A 中无 weight 变量,故 A 的部分观测的 weight 为缺失。 merge by Data dummy; ...
1DATA PINGPANG;2MERGE CHINA USA;3RUN; #output 使用SQL时:在SQL中应具体匹配到关键字,然后会从笛卡儿积中选取两个表中同时都存在的观测作为内连接。 1PROCSQL;2CREATETABLEPINGPANG01ASSELECT*FROMCHINAINNERJOINUSAONCHINA.LEVEL=USA.LEVEL;3QUIT;
data test3;merge adam.adae adam.adsl;by usubjid;ifnotmissing(aedecod)and arm="试验组"and fasfl="Y";keep usubjid aedecod;run; ↑向右滑动查看全部代码↑ 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...
The MERGE function in a data step is equivalent to an OUTER JOIN in PROC SQL. The following code uses a DATA step to produce the same table that the PROC SQL code above produced: PROC SORT DATA=Input_table; BY Name; RUN; 3 PROC SORT DATA=Input2; BY Name; RUN; DATA Output_table;...
I will guarentee you that a join in SQL in either SQL 2k or Oracle will blow SAS's (proc SQL or merge) time out of the water... and coupled with the SQL being a view of the database things can be optimized with indexes that would make even accessing the biggest database fly......
都会对数据结构进行处理吧,多表的合并等操作,各种连接(内连接,外连接,左连接,右连接...等等),在data步中有mege和set,在sql步中就更多了,本篇前面就提到...) PK Merge(Data Step))关于SQL的用法小编还是要在推荐一个朋友总结的文章点击此处:[1]SAS— proc sql 语句 [2]SAS sql 关于SQL...
DTS_E_SQLTASK_INVALIDNUMOFRESULTBINDINGS 字段 DTS_E_SQLTASK_INVALIDPARAMETERNAME 字段 DTS_E_SQLTASK_MULTIPLERETURNVALUEPARAM 字段 DTS_E_SQLTASK_NOCONNECTIONMANAGER 字段 DTS_E_SQLTASK_NOHANDLERFORCONNECTION 字段 DTS_E_SQLTASK_NOSQLTASKDATAINXMLFRAGMENT 字段 DTS_E_SQLTASK_NOSTATEMENTSPECIFIED 字段 ...