Order Your Email : Order By « Query Select « Oracle PL/SQL Tutorial

Oracle PL/SQL Tutorial

1.	Introduction
2.	Query Select
3.	Set
4.	Insert Update Delete
5.	Sequences
6.	Table
7.	Table Joins
8.	View
9.	Index
10.	SQL Data Types
11.	Character String Functions
12.	Aggregate Functions
13.	Date Timestamp Functions
14.	Numerical Math Functions
15.	Conversion Functions
16.	Analytical Functions
17.	Miscellaneous Functions
18.	Regular Expressions Functions
19.	Statistical Functions
20.	Linear Regression Functions
21.	PL SQL Data Types
22.	PL SQL Statements
23.	PL SQL Operators
24.	PL SQL Programming
25.	Cursor
26.	Collections
27.	Function Procedure Packages
28.	Trigger
29.	SQL PLUS Session Environment
30.	System Tables Data Dictionary
31.	System Packages
32.	Object Oriented
33.	XML
34.	Large Objects
35.	Transaction
36.	User Privilege

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Oracle PL/SQL Tutorial » Query Select » Order By

2. 4. 17. Order Your Email


SQL>

SQL> CREATE TABLE email (e   VARCHAR(50));



Table created.



SQL> INSERT INTO email VALUES ('I@napier.ac.uk');



1 row created.



SQL> INSERT INTO email VALUES ('P.Bhardwaj@napier.ac.uk');



1 row created.



SQL> INSERT INTO email VALUES ('Scott@rbs.co.uk');



1 row created.



SQL> INSERT INTO email VALUES ('Alan@rbs.co.uk');



1 row created.



SQL> INSERT INTO email VALUES ('abc@s.com');



1 row created.



SQL>

SQL> SELECT SUBSTR(e,1+INSTR(e,'.',-1)),e

  2    FROM email;



SUBSTR(E,1+INSTR(E,'.',-1))

--------------------------------------------------

E

--------------------------------------------------

uk

I@napier.ac.uk



uk

P.Bhardwaj@napier.ac.uk



uk

Scott@rbs.co.uk





SUBSTR(E,1+INSTR(E,'.',-1))

--------------------------------------------------

E

--------------------------------------------------

uk

Alan@rbs.co.uk



com

abc@s.com





SQL>

SQL> DROP TABLE email;



Table dropped.



SQL>

2. 4. Order By
	2. 4. 1.	Sorting Rows Using the ORDER BY Clause
	2. 4. 2.	Sort last name ascending
	2. 4. 3.	Sort last name descending
	2. 4. 4.	Sort one column ascending and another column descending
	2. 4. 5.	Sort by index ascending and descending
	2. 4. 6.	Reference alias name in order by clause
	2. 4. 7.	Order by a calculated column
	2. 4. 8.	Sort the rows by descending order with DESC appended to order by clause
	2. 4. 9.	Sort two columns with different ordering
	2. 4. 10.	Use a column position number in the ORDER BY clause
	2. 4. 11.	A SELECT with Ordering
	2. 4. 12.	Order the table on the employee's original salary (orig_salary)
	2. 4. 13.	Order by two columns
	2. 4. 14.	Add aggregate function in order by clause
	2. 4. 15.	Order by username
	2. 4. 16.	Combine order by clause with case statement
	2. 4. 17.	Order Your Email

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