Oracle:listagg

LISTAGG(XXX,XXX) WITHIN GROUP( ORDER BY XXX)

多行转为单行，并进行拼接

例：查询合肥分部及其上级的id，并进行拼接，逗号隔开

select listagg(id,‘,‘) within group (order by id) ids from (SELECT id FROM org START WITH name = ‘合肥分部‘ CONNECT BY id = PRIOR  parent_id);

Oracle:listagg

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