cluster
admin
In Oracle Database, a cluster is a schema object that stores rows from one or more tables that have a common column in the same data blocks. This improves the…
oracle
Indexing
In Oracle, you create an index using the CREATE INDEX statement. Syntax Example 1: Create a Simple Index Suppose you have an employees table: This creates an index on the…
synonym
In Oracle, a synonym is an alias (alternate name) for a database object such as a table, view, sequence, procedure, function, package, or materialized view. Synonyms simplify object access and…
sequence
In Oracle, a sequence is a database object that generates unique numeric values, often used to create primary key values automatically. Syntax to create a sequence Example Create a sequence:…
View
In Oracle, a View is a virtual table created from the result of a SQL query. It does not store data itself; instead, it stores the SQL statement. Whenever you…
Oracle Material
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Oracle SQL Operator
Below are the commonly used Oracle SQL Operators with their definitions and examples. Operator Description Example ALL Used to compare a value with all values returned by a subquery. The…
Oracle JOIN Query
A JOIN in Oracle is used to combine rows from two or more tables based on a related column between them. Sample Tables STUDENT Table STUDENT_ID NAME DEPT_ID 101 Amit…
Oracle Query
CREATE TABLE S1_123 (StudentID INT,Name VARCHAR(50) NOT NULL);insert into s1_123 values(1,’aaa’);select * from s1_123;alter table s1_123 add(email varchar2(100) unique);alter table s1_123 modify(StudentID Int Primary Key);insert into s1_123 values(2,’aaa’,’123@gmail.com’);desc s1_123;insert into…
Below are Oracle SQL examples for CREATE TABLE, INSERT, UPDATE, DELETE, ALTER (ADD, DROP, MODIFY), and DROP TABLE.
1. CREATE TABLE Syntax: Example: 2. INSERT INTO Syntax: Example: Display Data Output SID SNAME CITY MARKS 101 Rahul Rajkot 85 102 Priya Ahmedabad 90 103 Amit Surat 78 3.…