1、創建數據庫
CREATE DATABASE [IF NOT EXISTS] <數據庫名>
[[DEFAULT] CHARACTER SET <字符集名>]
[[DEFAULT] COLLATE <校對規則名>];
創建UTF8字符集的MySQL數據庫example。
注：數據庫名可以自擬。
2、選擇數據庫
USE <數據庫名>
說明：當顯示“Database changed”時，表示已經切換到當前數據庫。
3、創建表
(1) 創建table
CREATE TABLE <表名> ([表定義選項])[表選項][分區選項];
(2) 修改table
ALTER TABLE <表名> [修改選項]
{ ADD COLUMN <列名> <類型>
| CHANGE COLUMN <舊列名> <新列名> <新列類型>
| ALTER COLUMN <列名> { SET DEFAULT <默認值> | DROP DEFAULT }
| MODIFY COLUMN <列名> <類型>
| DROP COLUMN <列名>
| RENAME TO <新表名> }
將如下SQL代碼寫入編輯器，執行SQL語句：
-- ---------------------------------------------------------------------------------------
CREATE TABLE DEPT (
DEPTNO INT (2) NOT NULL,
DNAME VARCHAR (14),
LOC VARCHAR (13)
);
ALTER TABLE DEPT ADD CONSTRAINT PK_DEPT PRIMARY KEY (DEPTNO);
-- ---------------------------------------------------------------------------------------
CREATE TABLE EMP (
EMPNO INT (4) NOT NULL,
ENAME VARCHAR (10),
JOB VARCHAR (9),
MGR INT (4),
HIREDATE date,
SAL INT (7),
COMM INT (7),
DEPTNO INT (2)
);
ALTER TABLE EMP ADD CONSTRAINT PK_EMP PRIMARY KEY (EMPNO);
ALTER TABLE EMP ADD CONSTRAINT FK_DEPTNO FOREIGN KEY (DEPTNO) REFERENCES DEPT (DEPTNO);-- ---------------------------------------------------------------------------------------
CREATE TABLE `SALGRADE` (
`GRADE`int(10) unsignedDEFAULTNULL,
`LOSAL`int(10) unsignedDEFAULTNULL,
`HISAL`int(10) unsignedDEFAULTNULL
);
4、插入數據
INSERT INTO table_name ( field1, field2,...fieldN ) VALUES ( value1, value2,...valueN );
INSERT INTO DEPT (DEPTNO, DNAME, LOC) VALUES (10, 'ACCOUNTING', 'NEW YORK');
INSERT INTO DEPT (DEPTNO, DNAME, LOC) VALUES (20, 'RESEARCH', 'DALLAS');
INSERT INTO DEPT (DEPTNO, DNAME, LOC) VALUES (30, 'SALES', 'CHICAGO');
INSERT INTO DEPT (DEPTNO, DNAME, LOC) VALUES (40, 'OPERATIONS', 'BOSTON');
COMMIT;
-- ---------------------------------------------------------------------------------------
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7369, 'SMITH', 'CLERK', 7902, str_to_date('17-12-1980', '%d-%m-%Y'), 800, NULL, 20 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7499, 'ALLEN', 'SALESMAN', 7698, str_to_date('20-02-1981', '%d-%m-%Y'), 1600, 300, 30 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7521, 'WARD', 'SALESMAN', 7698, str_to_date('22-02-1981', '%d-%m-%Y'), 1250, 500, 30 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7566, 'JONES', 'MANAGER', 7839, str_to_date('02-04-1981', '%d-%m-%Y'), 2975, NULL, 20 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7654, 'MARTIN', 'SALESMAN', 7698, str_to_date('28-09-1981', '%d-%m-%Y'), 1250, 1400, 30 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7698, 'BLAKE', 'MANAGER', 7839, str_to_date('01-05-1981', '%d-%m-%Y'), 2850, NULL, 30 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7782, 'CLARK', 'MANAGER', 7839, str_to_date('09-06-1981', '%d-%m-%Y'), 2450, NULL, 10 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7788, 'SCOTT', 'ANALYST', 7566, str_to_date('19-04-1987', '%d-%m-%Y'), 3000, NULL, 20 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7839, 'KING', 'PRESIDENT', NULL, str_to_date('17-11-1981', '%d-%m-%Y'), 5000, NULL, 10 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7844, 'TURNER', 'SALESMAN', 7698, str_to_date('08-09-1981', '%d-%m-%Y'), 1500, 0, 30 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7876, 'ADAMS', 'CLERK', 7788, str_to_date('23-05-1987', '%d-%m-%Y'), 1100, NULL, 20 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7900, 'JAMES', 'CLERK', 7698, str_to_date('03-12-1981', '%d-%m-%Y'), 950, NULL, 30 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7902, 'FORD', 'ANALYST', 7566, str_to_date('03-12-1981', '%d-%m-%Y'), 3000, NULL, 20 );
INSERT INTO EMP ( EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO ) VALUES ( 7934, 'MILLER', 'CLERK', 7782, str_to_date('23-01-1982', '%d-%m-%Y'), 1300, NULL, 10 );
COMMIT;
-- ---------------------------------------------------------------------------------------
INSERT INTO`SALGRADE`VALUES (1,700,1200),(2,1201,1400),(3,1401,2000),(4,2001,3000);
COMMIT;