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我尝试从两列中的所有记录与不同的表和分隔彼此之间,但我只有结果从第一行不是从所有行我怎么能解决这个问题?Postgres sql返回值
CREATE FUNCTION human() RETURNS integer AS $$
DECLARE person integer;
size integer;
def integer;
Begin
Select sizex into size from region;
Select defx into def from humans;
osoba = def/size;
return person;
END;
$$ LANGUAGE 'plpgsql';
select human();