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Grey Shim

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다른 상용 RDBMS와 유사하게, 테이블을 먼저 생성하고 데이터는 INSERT

...

INTO 문을 이용하여 데이터를 입력할 수 있다.

마크베이스는 'machsql' 도구를 대화형 질의 처리기로 제공한다.

Create table

Syntax:


테이블 생성

Code Block
languagesql
CREATE TABLE table_name (
    column1 datatype,
    column2 datatype,
    column3 datatype,
   ....
);

...



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 Code Block
languagesql
CREATE TABLE sensor_data 
(
 id VARCHAR(32),
 val DOUBLE
);
Insert data
...

데이터 입력
 Code Block
languagesql
INSERT INTO table_name
VALUES (value1, value2, value3, ...);
Example:

 Code Block
languagesql
INSERT INTO sensor_data VALUES('sensor1', 10.1);
INSERT INTO sensor_data VALUES('sensor2', 20.2);
INSERT INTO sensor_data VALUES('sensor3', 30.3);
Check inserted data
Syntax:

데이터 입력 확인
 Code Block
languagesql
SELECT column1, column2, ...
FROM table_name;
...

 Code Block
languagesql
SELECT	*	FROM	sensor_data;
...

아래는 machsql 을 사용한 예제이다.
 Code Block
...
Mach> CREATE TABLE sensor_data
     (
       id    VARCHAR(32),
       val   DOUBLE
     );
Created successfully.

...
Mach> INSERT INTO sensor_data VALUES('sensor1', 10.1);
1 row(s) inserted.

...
Mach> INSERT INTO sensor_data VALUES('sensor2', 20.2);
1 row(s) inserted.

...
Mach> INSERT INTO sensor_data VALUES('sensor3', 30.3);
1 row(s) inserted.

...
Mach> SELECT * FROM sensor_data;
ID                                VAL
-----------------------------------------------------------------
sensor3                           30.3
sensor2                           20.2
sensor1                           10.1
[3] row(s) selected.