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"The artist is
nothing without the gift, but the gift is nothing without
work." - Emile Zola (1840-1902) |
Read
first then play the video:
SQL-VIDEO -SQL
and PL/SQL Notepad editor
Notepad Editing
Why notepad editing and use
of afiedt.buf
Oracle makes provisions for
you to utilize your favorite text editor to edit the statement created
in "afiedt.buf," the file into which SQL*PLUS stores the
most recently executed SQL statement. You simply type edit
(abbreviated "ed"). This action causes Oracle to bring up
the SQL statement in "afiedt.buf" into the operating
system's default text editor.
DEFINE_EDITOR command
To change the text editor,
issue the define_editor='your editor' statement from the SQL*PLUS
prompt. Try to use a text editor rather than the Command Line editor.
Go to MS-DOS and change the
directory to the iself folder.
SQL> cd ..
Login to "sqlplus" as
"iself/schooling".
SQL> sqlplus iself/schooling
Get the dept file.
SQL> get dept
"ed" command
Your default editor is
notepad. Use the "ed" command, to call notepad. On notepad,
you can modify the query. Then close the window and click on Yes to
replace the changes to the buffer.
Notice that when you use
the "ed" command in the sqlplus, your defined editor will bring
the last SQL statement from Oracle buffer. Now, you should be able to
modify the SQL statement. After you modify your query, you can save
and exit from the defined editor. By default that is NOTEPAD.
Remember that when you
bring your SQL statement into your editor the ";" character will
be disappeared and instead a "/" character will be replaced. Leave
the SQL statement with "/" character and don"t enter ";"
character at the end of your SQL statement.
Also, you should not work
in the defined editor one SQL statement at a time. You can not have
multiple SQL statements.
Notepad as an independent
tool
If you want to use multiple
SQL statements or to write your SQL script, you may want to open your
own independent editor from the SQLPLUS tool.
And the technique you may
want to use is to open the notepad as an independent tool.
To open the dept script
from the iself directory, open notepad as a separate window and then
open the "dept" file from the "iself" folder.
Add a column heading.
Change the statement to query only the department number 10.
Save the file. Save the
file at the iself folder.
Go to "SQLPLUS."
Get the "dept"
file.
SQL> get dept
Notice that the changes are
in the buffer, run the query.
SQL> run
Use the "Start" command
to run the query.
Go to notepad
Remove the department
number column.
Save the changes.
Go back to "SQLPLUS."
Use the @ sign to run the
file.
No department number this
time.
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"This book fills
a much-needed gap." - Moses Hadas (1900-1966) in a review |
Questions:
Q: How do you use the
notepad editor?
Q: What is afiedt.buf?
Q: How do you change your
text editor in the SQLPLUS tool?
Q: What does the ed command
in the SQLPLUS tool?
Q: Can you have multiple
SQL statements in the afiedt.buf file?
Q: How do you use the
notepad editor as an independent tool in the SQLPLUS utility?
Q: How do you execute or
run a SQL script?
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