Using Aliases : alias column « Select Query « Oracle PL / SQL

Home
Oracle PL / SQL
1.Aggregate Functions
2.Analytical Functions
3.Char Functions
4.Constraints
5.Conversion Functions
6.Cursor
7.Data Type
8.Date Timezone
9.Hierarchical Query
10.Index
11.Insert Delete Update
12.Large Objects
13.Numeric Math Functions
14.Object Oriented Database
15.PL SQL
16.Regular Expressions
17.Report Column Page
18.Result Set
19.Select Query
20.Sequence
21.SQL Plus
22.Stored Procedure Function
23.Subquery
24.System Packages
25.System Tables Views
26.Table
27.Table Joins
28.Trigger
29.User Previliege
30.View
31.XML
Oracle PL / SQL » Select Query » alias column 
Using Aliases
 
SQL>
SQL> CREATE TABLE emp (
  2     empID INT NOT NULL PRIMARY KEY,
  3     Name      VARCHAR(50NOT NULL);

Table created.

SQL>
SQL> INSERT INTO emp (empID,NameVALUES (1,'Tom');

row created.

SQL> INSERT INTO emp (empID,NameVALUES (2,'Jack');

row created.

SQL> INSERT INTO emp (empID,NameVALUES (3,'Mary');

row created.

SQL> INSERT INTO emp (empID,NameVALUES (4,'Bill');

row created.

SQL> INSERT INTO emp (empID,NameVALUES (5,'Cat');

row created.

SQL> INSERT INTO emp (empID,NameVALUES (6,'Victor');

row created.

SQL>
SQL> SELECT Name AS empName, empID AS ID FROM emp;

EMPNAME                                                    ID
-------------------------------------------------- ----------
Tom                                                         1
Jack                                                        2
Mary                                                        3
Bill                                                        4
Cat                                                         5
Victor                                                      6

rows selected.

SQL>
SQL> drop table emp;

Table dropped.

   
  
Related examples in the same category
1.Column Headings for calculated column
2.To_char function with alias column name
3.Use column command to define column name before select statement
4.TO_CHAR(last_stock_date, 'MM-DD-YYYY HH24:MI') with column alias
5.Using Aliases with Simple Subqueries
6.Using Aliasing in Equi-Joins
7.Use table alias to reference column names
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.