C Using SQLPlus Copyright Oracle Corporation 2001 All

Objectives After completing this appendix, you should be able to do the following: •

SQL and SQL*Plus Interaction SQL statements Server SQL*Plus Query results Buffer SQL scripts C-3

SQL Statements versus SQL*Plus Commands SQL • A language • ANSI standard • Keywords

Overview of SQL*Plus C-5 • • • Log in to SQL*Plus. • • Execute

Logging In to SQL*Plus • From a Windows environment: • From a command line:

Displaying Table Structure Use the SQL*Plus DESCRIBE command to display the structure of a

Displaying Table Structure SQL> DESCRIBE departments Name -----------DEPARTMENT_ID DEPARTMENT_NAME MANAGER_ID LOCATION_ID C-8 Null? Type

SQL*Plus Editing Commands • • C-9 A[PPEND] text C[HANGE] / old / new C[HANGE]

SQL*Plus Editing Commands • • • C-10 I[NPUT] text L[IST] n L[IST] m n

Using LIST, n, and APPEND SQL> LIST 1 SELECT last_name 2* FROM employees SQL>

Using the CHANGE Command SQL> L 1* SELECT * from employees SQL> c/employees/departments 1*

SQL*Plus File Commands • • C-13 SAVE filename GET filename START filename @ filename

Using the SAVE and START Commands SQL> 1 2* SQL> L SELECT last_name, manager_id,

Summary Use SQL*Plus as an environment to: • • C-15 Execute SQL statements Edit

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Objectives After completing this appendix, you should be able to do the following: • • C-2 Log in to SQL*Plus Edit SQL commands Format output using SQL*Plus commands Interact with script files Copyright © Oracle Corporation, 2001. All rights reserved.

SQL Statements versus SQL*Plus Commands SQL • A language • ANSI standard • Keywords cannot be abbreviated • Statements manipulate data and table definitions in the database SQL statements C-4 SQL buffer SQL*Plus • An environment • Oracle proprietary • Keywords can be abbreviated • Commands do not allow manipulation of values in the database SQL*Plus commands Copyright © Oracle Corporation, 2001. All rights reserved. SQL*Plus buffer

Overview of SQL*Plus C-5 • • • Log in to SQL*Plus. • • Execute saved files. Describe the table structure. Edit your SQL statement. Execute SQL from SQL*Plus. Save SQL statements to files and append SQL statements to files. Load commands from file to buffer to edit. Copyright © Oracle Corporation, 2001. All rights reserved.

Displaying Table Structure SQL> DESCRIBE departments Name -----------DEPARTMENT_ID DEPARTMENT_NAME MANAGER_ID LOCATION_ID C-8 Null? Type -----------NOT NULL NUMBER(4) NOT NULL VARCHAR 2(30) NUMBER(6) NUMBER(4) Copyright © Oracle Corporation, 2001. All rights reserved.

Using LIST, n, and APPEND SQL> LIST 1 SELECT last_name 2* FROM employees SQL> 1 1* SELECT last_name SQL> A , job_id 1* SELECT last_name, job_id SQL> L 1 SELECT last_name, job_id 2* FROM employees C-11 Copyright © Oracle Corporation, 2001. All rights reserved.

Using the CHANGE Command SQL> L 1* SELECT * from employees SQL> c/employees/departments 1* SELECT * from departments SQL> L 1* SELECT * from departments C-12 Copyright © Oracle Corporation, 2001. All rights reserved.

Using the SAVE and START Commands SQL> 1 2* SQL> L SELECT last_name, manager_id, department_id FROM employees SAVE my_query Created file my_query SQL> START my_query LAST_NAME MANAGER_ID DEPARTMENT_ID -------------King 90 Kochhar 100 90. . . 20 rows selected. C-14 Copyright © Oracle Corporation, 2001. All rights reserved.