Open Ch-msm opened 4 years ago
触发器:
创建函数
#更新关键字文档函数
create or replace function update_tsv_content() RETURNS TRIGGER AS $$
BEGIN
update asset set tsv_content = concat(j->>'location_text',j->>'name',j->>'status',j->>'identify',j#>>'{asset_group,name}',j#>>'{dept,name}',j#>>'{dept,parent_department,name}',j#>>'{qs_owner,fullname}',j#>>'{model_type,produce_model}',j#>>'{user,name}') WHERE j->>'id' = NEW.j->>'id';
RETURN NEW;
END;
$$ language plpgsql;
创建触发器
CREATE TRIGGER asset_update_tsv_content AFTER INSERT OR UPDATE OF "j"
ON asset FOR EACH ROW EXECUTE PROCEDURE update_tsv_content();
删除触发器
drop TRIGGER asset_update_tsv_content on asset
时间戳转日期
to_char(to_timestamp(cast(j ->> 'timestamp' as bigint) / 1000),'YYYY-MM-DD hh24:mi:ss') AS date
生成日期序列
select date(t) as day from generate_series('2021-11-01'::date,'2021-12-30','1 days') as t
VACUUM full system_log;
创建索引:
删除索引:
查看索引大小:
创建brin索引 占用空间小 适用于时序pages_per_range 为精度参数 默认128