SQLdelete_stream
DELETE Stream
DELETE로 Stream 키를 삭제
DELETE로 Stream 키를 삭제합니다.
테스트 데이터 입력
Example
| 명령> | xadd sensor1 * temp 10 humid 20 pres 30 vib 40 flag AA1 |
| 명령> | xadd sensor2 * temp 11 humid 25 pres 28 vib 50 flag AA2 |
| 명령> | xadd sensor3 * temp 12 humid 30 pres 26 vib 60 flag AA3 |
| 명령> | xadd sensor4 * temp 13 humid 35 pres 24 vib 20 flag BB1 |
| 명령> | xadd sensor5 * temp 14 humid 40 pres 22 vib 30 flag BB2 |
Key로 삭제
DELETE FROM STREAM.SENSOR1
키 하나를 지정하거나 '*'를 사용해서 여러 개 키를 삭제할 수 있습니다.
Example
| 명령> | select * from stream.*; |
| 결과> |
0) key|id|temp|humid|pres|vib|flag 1) sensor1|1623474437867-0|10|20|30|40|AA1 2) sensor2|1623474570594-0|11|25|28|50|AA2 3) sensor3|1623474576131-0|12|30|26|60|AA3 4) sensor4|1623474580851-0|13|35|24|20|BB1 5) sensor5|1623474585754-0|14|40|22|30|BB2 |
| 명령> | delete from stream.sensor1; opcode |
| 결과> | 1 keys deleted |
| 명령> | delete from stream.sensor*; opcode |
| 결과> | 4 keys deleted |
WHERE 조건
비교: =, <, <=, >, >=, !=, <>
Where 조건으로 키를 삭제할 수 있습니다.
삭제 명령은 키가 지워지므로 필요한 키를 다시 넣고 시작하세요.
주의할 점은 where 조건에 field를 사용할 경우에도 키가 삭제됩니다.
field만 삭제할 경우 레디스 원래 명령을 사용하세요.
Example
BETWEEN, NOT BETWEEN
Example
| 명령> | delete from stream.* where key between 'sensor1' and 'sensor2'; opcode |
| 결과> | 2 keys deleted |
| 명령> | delete from stream.* where key not between 'sensor1' and 'sensor2'; opcode |
| 결과> | 3 keys deleted |
| 데이터 입력 | |
| 명령> | delete from stream.* where humid between 25 and 30; opcode |
| 결과> | 2 keys deleted |
| 명령> | delete from stream.* where humid not between 25 and 30; opcode |
| 결과> | 3 keys deleted |
IN, NOT IN
Example
| 명령> | delete from stream.* where key in ('sensor1','sensor2'); opcode |
| 결과> | 2 keys deleted |
| 명령> | delete from stream.* where key not in ('sensor1','sensor2'); opcode |
| 결과> | 3 keys deleted |
| 데이터 입력 | |
| 명령> | delete from stream.* where humid in (25,30); opcode |
| 결과> | 2 keys deleted |
| 명령> | delete from stream.* where humid not in (25,30); opcode |
| 결과> | 3 keys deleted |
GLOB, NOT GLOB
*(별표), ?(물음표)
대소문자를 구분한다.
Example
LIKE, NOT LIKE
%(퍼센트), _(밑줄)
대소문자를 구분하지 않는다.
Example
테스트 데이터 입력
Example
| 명령> | xadd sensor_1 * temp 10 humid 20 pres 30 vib 40 |
| 명령> | xadd sensor_1 * temp 11 humid 25 pres 28 vib 50 |
| 명령> | xadd sensor_1 * temp 12 humid 30 pres 26 vib 60 |
| 명령> | xadd sensor_1 * temp 13 humid 35 pres 24 vib 20 |
| 명령> | xadd sensor_1 * temp 14 humid 40 pres 22 vib 30 |
| 명령> | xadd sensor_2 * temp 124.7 humid 46.8 pres 150.4 flag AA1 |
| 명령> | xadd sensor_2 * temp 123.4 humid 50.4 pres 148.6 flag AA2 |
| 명령> | xadd sensor_2 * temp 119.8 humid 48.1 pres 149.2 flag BB1 |
| 명령> | xadd sensor_2 * temp 128.1 humid 51.2 flag BB2 |
| 명령> | xadd sensor_2 * temp 117.4 humid 46.7 flag BB3 |
| 명령> | xadd sensor_3 * temp 10 |
| 명령> | xadd sensor_3 * temp 50 |
| 명령> | xadd sensor_3 * temp 30 |
| 명령> | xadd sensor_3 * temp 20 |
| 명령> | xadd sensor_3 * temp 40 |
| 명령> | xadd mys1 * temp 10 |
| 명령> | xadd mys1 * temp 50 |
| 명령> | xadd mys1 * temp 30 |
비교: =, <, <=, >, >=, !=, <>
Example
BETWEEN, NOT BETWEEN
Example
IN, NOT IN
Example
GLOB
*(별표), ?(물음표)
대소문자를 구분한다.
Example
| 명령> | delete from stream.* where flag glob 'AA*'; opcode |
| 결과> | 1 keys deleted |
LIKE
%(퍼센트), _(밑줄)
대소문자를 구분하지 않는다.
Example
| 명령> | delete from stream.* where flag like 'AA%'; opcode |
| 결과> | 1 keys deleted |
OPCODE
delete from stream.sensor1;
delete from stream.sensor*;
delete from stream.* where key > 'sensor4';
delete from stream.* where temp = 10;
delete from stream.* where humid <= 30;
delete from stream.* where flag = 'BB1';
delete from stream.* where key between 'sensor1' and 'sensor2';
delete from stream.* where key not between 'sensor1' and 'sensor2';
delete from stream.* where humid between 25 and 30;
delete from stream.* where humid not between 25 and 30;
delete from stream.* where key in ('sensor1','sensor2');
delete from stream.* where key not in ('sensor1','sensor2');
delete from stream.* where humid in (25,30);
delete from stream.* where humid not in (25,30);
delete from stream.* where flag glob 'AA*';
delete from stream.* where flag glob 'CC*';
delete from stream.* where flag not glob 'CC*';
delete from stream.* where flag like 'AA%';
delete from stream.* where flag like 'CC%';
delete from stream.* where flag not like 'CC%';
delete from stream.* where temp = 10;
delete from stream.* where temp > 30;
delete from stream.* where temp between 25 and 30;
delete from stream.* where temp not between 25 and 30;
delete from stream.* where temp in (25,30);
delete from stream.* where temp not in (25,30);
delete from stream.* where flag glob 'AA*';
delete from stream.* where flag like 'AA%';
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