SQL server 和 Oracle 中列转行的小操作

Oracle：

create table zjhis.mz_zdxx_zl

as

select a.sfsb,

wm_concat(a.zdmc) as 诊断 from zjhis.mz_zdxx a

group by a.sfsb

直接可以使用 wm_concat 函数

 

SQl SERVER ：

　　select t.patient_id,
       t.times,
       [ values ] = stuff((select ',' + icd_name
                             from sx2017.dbo.mz_visit_diagnose
                            where patient_id = t.patient_id
                              and times = t.times
                              for xml path('')), 1, 1, '')
  from sx2017.dbo.mz_visit_diagnose t
 group by patient_id, times
patient_id, times 为关连字段