利用“BETWEEN”运算符可以查询在某个时间范围内的数据。 示例: SELECT * FROM table_name WHERE timestamp_column BETWEEN '2022-01-01 00:00:00' AND '2022-01-02 00:00:00'; 7. 包含某个日期 使用“DATE_TRUNC”函数可以查询包含某个日期的数据。 示例: ...
where paraid = '14112402C30000000401' and systemtime between ('2020-05-31 22:01:30') and ('2020-05-31 22:01:30'::timestamp + '1 sec') 1. 2. 3. 4. 5. 函数 返回类型 描述 例子 to_char(timestamp, text) text 把时间戳转换成字串 to_char(current_timestamp, ‘HH12:MI:SS’) ...
-- 最近7天SELECTDATE( T )ASDAYFROMgenerate_series ( (CURRENT_TIMESTAMP-INTERVAL'6 day') ::DATE,CURRENT_TIMESTAMP::DATE,'1 days')AST ; AI代码助手复制代码 当然6 day、1 day这些也是可修改的; --统计最近30、7、昨天、今天的数据SELECTcount(*)ASAllData,count(*)filter(WHEREcreate_timeBETWEEN(S...
count(*) filter ( WHERE create_time BETWEEN ( SELECT CURRENT_DATE - INTERVAL '30 day' ) AND CURRENT_DATE ) AS Last30DayData, count(*) filter ( WHERE create_time BETWEEN ( SELECT CURRENT_DATE - INTERVAL '7 day' ) AND CURRENT_DATE ) AS Last7DayData, count(*) filter ( WHERE create...
WHERE timestamp_column BETWEEN now() - interval '1 hour' AND now() AND userid = <your_userid>; 然后,可以使用generate_series函数生成一个包含40分钟每隔8秒的时间序列,并使用LEFT JOIN将这部分时间序列与查询结果进行连接。最后,可以使用条件判断,如果连接的结果为空(即没有数据),则返回该时间点对应的...
time ORDER BY time ASC 1. 2. 3. 4. 5. 6. 7. 8. 2. 查询该时间段内所有的数据 SELECT to_char ( A.systemtime, 'yyyy-mm-dd' ) AS TIME, paravalue FROM ( SELECT paravalue, systemtime FROM buct_composedata WHERE paraid = '42282313900000004EC1' AND systemtime BETWEEN ( '2020/06/11...
可以使用between稍微简化为: select *from table1 aleft join table2 b on a.id = cast(b.id as varchar) and registered between '2020-10-01' and '2020-10-31'where date between '2020-10-01' and '2020-10-31' R传递函数进行累加
mydb=# create table test_datetime ( ts timestamp, tstz timestamp with time zone, period interval ); mydb=# \d test_datetime; Table "public.test_datetime" Column | Type | Collation | Nullable | Default ---+---+---+---+--- ts | timestamp without time zone | | | tstz | ti...
postgres=#createunloggedtabletest(crt_timetimestamp, info textdefault'53d3ec7adbeacc912a45bdd8557b435be848e4b1050dc0f5e46b75703d4745833541b5dabc177db460b6b1493961fc72c478daaaac74bcc89aec4f946a496028d9cff1cc4144f738e01ea36436455c216aa697d87fe1f87ceb49134a687dc69cba34c9951d0c9ce9ca82bba229d56...
INSERT INTO AUDIT(EMP_ID, ENTRY_DATE) VALUES (new.ID, current_timestamp); RETURN NEW; END;$example_table$ LANGUAGE plpgsql; CREATE TRIGGER example_trigger AFTER INSERT ON COMPANY FOR EACH ROW EXECUTE PROCEDURE auditlogfunc(); 列举所有触发器 SELECT * FROM pg_trigger; 删除触发器 drop trigge...