1 列传行 listagg(city,',') within GROUP (order by city) over (partition by nation) rank
with temp as(
select 500 population, 'China' nation ,'Guangzhou' city from dual union all
select 1500 population, 'China' nation ,'Shanghai' city from dual union all
select 500 population, 'China' nation ,'Beijing' city from dual union all
select 1000 population, 'USA' nation ,'New York' city from dual union all
select 500 population, 'USA' nation ,'Bostom' city from dual union all
select 500 population, 'Japan' nation ,'Tokyo' city from dual
)
select population,
nation,
city,
listagg(city,',') within GROUP (order by city) over (partition by nation) rank
from temp
参考帖子 :http://dacoolbaby.iteye.com/blog/1698957
2 分割函数
select name ,workcode,
NVL(SUBSTR(LTRIM(contract1, '-'),
0,
INSTR(LTRIM(contract1, '-'), '-', 1) - 1),
LTRIM(contract1, '-')) AS contract1_name,
REGEXP_SUBSTR(LTRIM(contract1, '-'), '[^-]+', 1, 2) AS contract1_begin,
REGEXP_SUBSTR(LTRIM(contract1, '-'), '[^-]+', 2, 3) AS contract1_end,
REGEXP_SUBSTR(LTRIM(contract1, '-'), '[^-]+',3,4) AS contract1_type
from lsq_result2018_1
lsq_result2018_1 的表结构
分割后：
