select c.open_id,c.created_date
from (select t.*,
row_number() over(partition by t.open_id order by t.created_date desc) rn
from nec_opr.EC_WECHAT_CALL_DATA_BIND t
where t.open_id is not null) c
where rn = 1;
Oracle has multiple records with the same ID in a table, and each ID only gets the latest record
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