$ row_data=$(docker exec $pg_container_id psql -U postgres blogdb --tuples-only -c "select t_data from heap_page_items(get_raw_page('countries', 1)) limit 1;") $ python3 -c "print(bytearray.fromhex(r'$row_data'.strip().replace('\\\x', '')).decode('utf-8', errors='...
创建序列 create sequence user_seq increment by 1 start with 1 nomaxvalue nominvalue nocache 创建触发器 create or replace trigger tr_user before insert on t_user for each row begin select user_seq.nextval into :new.id from dual; end; 测试 insert into t_user(userid,loginpassword, isdisab...
问用于更新旧数据和插入新数据的Postgres函数EN我正在尝试编写一个函数，当我的脚本从AD中提取信息时，它...
OR REPLACE FUNCTION control_alarm_info_insert_trigger () RETURNS TRIGGER AS $$ BEGIN IF ( NEW .alarm_time >= '2018-09-01' AND NEW .alarm_time < '2018-10-01' ) THEN INSERT INTO control_alarm_info_201809 VALUES (NEW .*) ; ELSEIF ( NEW .alarm_time >= '2018-10-01' AND NEW ....
示例SQL具有如下所示的函数和表PostgreSQL是以加州大学伯克利分校计算机系开发的 POSTGRES，现在已经更名为...
NOTICE: if (new.id >= 19980000001 and new.id<20000000001) then insert into test2_1000 values (NEW.*); return null; end if; DO 建立触发器函数 create or replace function tg1() returns trigger as $$ declare begin if (new.id >= 1 and new.id<20000001) then insert into test2_1 values...
我在本地安装Postgres时遇到了同样的问题。它与在查询时活动的模式有关。例如，如果将pgvector添加到my-...
写法1:test=#createtablecompany(idintprimarykeynotnull,nametextnotnull,ageintnotnull,addresschar(50),salaryreal); 写法2:test=#CREATETABLECOMPANY(test(#IDINTPRIMARYKEYNOTNULL,test(#NAMETEXTNOTNULL,test(#AGEINTNOTNULL,test(#ADDRESSCHAR(50),test(#SALARYREALtest(#);# create tabke company(); 表示...
You want to replace a previously configured full-refresh sync. Your database doesn't incur heavy writes that would lead to transaction ID wraparound. You are not replicating non-materialized views. Non-materialized views are not supported by xmin replication.Connecting...
CREATE OR REPLACE PROCEDURE expire_rows (retention_period INTERVAL) AS$$BEGIN DELETE FROM cache WHERE inserted_at < NOW() - retention_period; COMMIT;END;$$ LANGUAGE plpgsql; CALL expire_rows('60 minutes'); -- This will remove rows older than 1 hour ...