How to Select Random Record from Table?
When working with large datasets, selecting random records can be challenging due to the need for efficient and reliable methods. We will select random records from the table in PL/SQL using the below method are as follow:
- Using the DBMS_RANDOM Package
- Using the SAMPLE Clause
Let’s set an environment for Select Random Record
To understand How to select random records from a table in PL/SQL we need a table on which we will perform various operations and queries. Here we will consider a table called test which contains id, val1 and val2 as Columns.
Query:
CREATE TABLE test
(
id INT PRIMARY KEY,
val1 VARCHAR(20),
val2 VARCHAR(20)
);
tablesfoo', 'zoo');
INSERT INTO test VALUES (2, 'bar', 'cage');
INSERT INTO test VALUES (3, 'tmp', 'jungle');
INSERT INTO test VALUES (4, 'cnt', 'pet');
INSERT INTO test VALUES (5, 'ctr', 'eat');
SELECT * FROM test;
Output:
test table
Explanation: Our table has been created.
How to Select Random Record From Table in PL/SQL?
In database management selecting random records from a table can be a useful operation for various applications such as sampling data, generating random samples for testing or selecting winners in a lottery.
In this article, we will explore different methods to select random records from a table in PL/SQL, Oracle’s procedural language extension for SQL. By the end of this article, you will understand how to use different approaches to achieve this task effectively.
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