Session6-b

Session6-b - SQL DML Session 6 (CSCI-585) Database...

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Database Management Systems 3ed, R. Ramakrishnan and J. Gehrke 1 SQL DML Session 6 (CSCI-585)
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Database Management Systems 3ed, R. Ramakrishnan and J. Gehrke 2 Example Schema Emp ( EmpNo , Name, Job, Sal, Comm, HireDate, Mgr , DeptNo ) Dept ( DeptNo , Name, Location) DeptNo Number(2) Name Varchar2(14) Location Varchar2(13) EmpNo Number(4) Name Varchar2(10) Job Varchar2(9) Sal Number(7,2) Comm Number(7,2) HireDate Date Mgr Number(4) DeptNo Number(2) Emp Dept
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Database Management Systems 3ed, R. Ramakrishnan and J. Gehrke 3 Example Relations EMPNO NAME JOB MGR HIREDATE SAL COMM DEPTNO 7369 SMITH CLERK 7902 17-DEC-80 800 20 7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30 7566 JONES MANAGER 7839 02-APR-81 2975 20 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30 7782 CLARK MANAGER 7839 09-JUN-81 2450 10 7788 SCOTT ANALYST 7566 19-APR-87 3000 20 7839 KING PRESIDENT 17-NOV-81 5000 10 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 7876 ADAMS CLERK 7788 23-MAY-87 1100 20 7900 JAMES CLERK 7698 03-DEC-81 950 30 7902 FORD ANALYST 7566 03-DEC-81 3000 20 7934 MILLER CLERK 7782 23-JAN-82 1300 10 DEPTNO NAME LOCATION 10 ACCOUNTING NEW YORK 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTON Dept Emp
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Database Management Systems 3ed, R. Ramakrishnan and J. Gehrke 4 INSERT Statement To create a tuple in SQL the following ‘Insert’ command is required: insert into R ( attribute 1 , attribute 2 , … attribute n ) values ( value 1 , value 2 , … value n ) insert into Emp ( empno , name , job , sal , comm , hiredate , mgr , deptno ) values ( 7839, ‘King’, ‘President’, 5000, NULL, ‘17-Nov-81’, NULL, 10)
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Session6-b - SQL DML Session 6 (CSCI-585) Database...

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