当一个表中有350行时，数组_acum在postgres SQL中返回空值
我使用下面的查询当一个表中有350行时，数组_acum在postgres SQL中返回空值,sql,postgresql,aggregate,postgresql-9.1,postgresql-9.2,Sql,Postgresql,Aggregate,Postgresql 9.1,Postgresql 9.2,我使用下面的查询 select distinct throttle_id, array_accum(param) over (partition by throttle_id) as script_exclude from throttle_data where exclude = 't' and valve_type = 513 and throttle_id = 1270571881 我在script\u exclude字段中得到空值 param列中的示例值是 机票/定价/发布0tc.wq
select distinct throttle_id, array_accum(param) over (partition by throttle_id) as script_exclude from throttle_data where exclude = 't' and valve_type = 513 and throttle_id = 1270571881
script\u exclude351Sachin Jain请尝试以下方法：
select throttle_id, array_agg(param) as script_exclude
from throttle_data where exclude = 't'
and valve_type = 513 and throttle_id = 1270571881
group by throttle_id;
select * from throttle_data
WHERE exclude = 't'
and valve_type = 513 and throttle_id = 1270571881;
string\u agg（）distinctgroupby