Chapter TwelveReport Writing

Objectives:-Writing reports-Page set up-Page layout

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Report Writing Your Name January 7,2001

List of coursesDepartment

Course No.

Course Name

Credit Date Started

Max enrollment

COSC 100 Intro 3 2-10-92 30110 Intro II 3 2-11-98 15200 Programmin

g3 14-2-93 20

220 Application 3 10-10-01

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Total 12 18

MATH 100 Algebra 4 1-9-91 45

Grand Total

110

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COLUMN:COLumn name | expression

FORmat formatHEAding Text

JUStify L | C | RNEWLineWRApped | TRUncated ;

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Column:COLUMN Name HEADING ‘Student’’s

Name’COLUMN id HEADING ‘Student’’s ID’COLUMN cr*grade HEADING ‘Score’

COLUMN name HEADING ‘Student’’s Name’ JUSTIFY L

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Column:COLUMN Name FORMAT A20COLUMN id FORMAT 9999COLUMN cr FORMAT 9COLUMN Gpa FORMAT 9.99

FORMAT:$999909999909,999.99DATEA10

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Column:COLUMN Name TRUNCATED

COLUMN id HEADING ‘Stud ID’ FORMAT 9999

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Break on:BREAK ON id SKIP 2BREAK ON id DUPLICATE SKIP 2BREAK ON id DUPLICATE

SKIP 2 ON REPORT

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Compute:COMPUTE SUM OF gpa ON idCOMPUTE SUM LABEL ‘Total’ OF gpa ON idCOMPUTE AVG OF a, b, c, d ON e, f

AVGCOUNTMAXMINSTDVAR

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Page SetupLine size:

SET LINESIZE 75

Page size:SET PAGESIZE 60

Blank lines at the top:SET NEWPAGE 3

Writing into a file:SPOOL filename.lisSPOOL Gstudent.lisSPOOL OFF

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Page SetupDisplay:

SET TERMOUT ONSPOOL filename.lis

SET TERMOUT OFF

Heading separator:SET HEADSEP charSET HEADSEP !

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Page SetupTitle:

TTITLE ‘ ‘BTITLE ‘ ‘

TTITLE Left ‘Page:’ SQL.PNO – Right ‘Date: ‘ SYSDATE Skip 1 –

Center ‘ My Report ‘ Skip 3;

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Page SetupHost:

HOST myeditfilename.SQL

Start:START filename.SQL

SQL environment:COLUMNCOLUMN colname

TTITLEBTITLE

BREAK

COMPUTE

DEFINE

SHOW HEADSEPSHOW LINESIZESHOW PAGESIZESHOW NEWPAGE

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Login FileLogin.sql

prompt login.sql loadedset feedback offset sqlprompt ‘ ‘set sqlnumber offset numwidth 5set pagesize 24set linesize 79

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Substitution Variables Substitution variables to temporarily

store values- &- & &- DEFINE and ACCEPT

Pass variable values between SQL statements

Dynamically alter header and footers

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& Substitution Variables User provides the input to the querySELECT Name, GPA, IDFROM StudentWHERE UPPER(Major) =

&Major_Input;

Enter Value for Major_Input: ‘COSC’

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& Substitution VariablesSELECT Name, ID, &Column_nameFROM StudentWHERE &conditionORDER BY ℴ

Enter Value for Column_name:Enter Value for Condition:Enter Value for Order:

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&& Substitution VariablesUse a value of a variable more than one

time

SELECT Name, ID, &&Column_nameFROM StudentWHERE &Column_name;

Enter value for Column_name:

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SET VERIFY ON:SET VERIFY ONSELECT name, id, addressFROM student WHERE id=&student_id;

Enter value for student_id:Old: where id=&student_id;New: when id=

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Character and Date Values With Substitution Variables: SELECT name, id, b_dateFROM student WHERE b_date =

'&new_birthdate';

Enter value for new_birthdate:

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SELECT name, id, rank, &column_name

FROM faculty WHERE &condition ORDER BY&order_column;

Enter value for column_name:Enter value for condition:Enter value for order_column:

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Defining User Variables You can pre-define variables using:

DEFINE: Create a user variable of CHAR data type

ACCEPT: Read user input and store it in a variable

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Defining User Variables If you need to predefine a variable that

includes spaces, you need to enclose the value within single quotation marks, when using the DEFINE command.

DEFINE variable=value DEFINE variable DEFINE ACCEPT

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ACCEPT Command: Create a customized prompt when

accepting user input

Explicitly defines a NUMBER or DATE datatype variable

Hides user input for security

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ACCEPT Command: ACCEPT variable [ datatype]

[FORMAT format][prompt text ] [HIDE]

ACCEPT field PROMPT 'Input your Major:‘ SELECT *

FROM student WHERE major=UPPER ('&field')

Input your major:

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DEFINE and UNDEFINE Use the UNDEFINE command to

clear Exit SQL*plus To define variables for every

session, modify your login.sql file

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DEFINE: DEFINE dept_name=COSC DEFINE dept_name

SELECT * FROM faculty WHERE dept=UPPER ('&dept_name');

UNDEFINE dept_name

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Example SQL> SET PAGESIZE 40 SQL> SET LINESIZE 60 SQL> SET FEEDBACK OFF SQL> Define MyName = 'Dr. Chitsaz' SQL> TTITLE LEFT 'MyName: ' & MyName -

RIGHT SYSDATE Skip1 – CENTER ‘List Of Courses'

SQL> COLUMN dept HEADING 'Deaprtment' format A10 SQL> COLUMN C_Num HEADING 'Course|Number'

format 9999 SQL> COLUMN title HEADING 'Course|Name' FORMAT

A5 SQL> COLUMN Cr HEADING 'Credit' FORMAT 9

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Example SQL> COLUMN S_DATE HEADING 'Date | Started'

SQL> COLUMN Max HEADING 'Max | Enrollment' format 999SQL> BREAK ON dept

SQL> COMPUTE SUM LABLE 'Total' OF Cr ON DeptSQL> BREAK ON REPORT

SQL> COMPUTE sum LABLE 'Grand Total'

SQL> select DEPT, C_Num, TITLE, CR, S_DATE, Max 2 FROM Course 3 ORDER BY DEPt;