Oracle PL/SQL Online Test

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About the test

The Oracle PL/SQL online test assesses knowledge of PL/SQL with live coding tasks that require writing SQL queries and using features specific to the Oracle SQL Engine.

The assessment includes work-sample tasks such as:

  • Writing stored procedures and functions, handling exceptions, and using transactions.
  • Using procedural language features of Oracle PL/SQL to optimize and refine queries at the database layer.
  • Writing queries and subqueries that join, group, filter, and aggregate data.

A good database admin or back-end developer working with an Oracle SQL Server database needs to be able to use Oracle's PL/SQL to create custom procedures and objects to interface with the database efficiently.

Sample public questions

Easy
7 min
code
Public
SQL
Aggregation
Group by
Select

App usage data are kept in the following table:

TABLE sessions
  id INTEGER PRIMARY KEY,
  userId INTEGER NOT NULL,
  duration DECIMAL NOT NULL

Write a query that selects userId and average session duration for each user who has more than one session.

See the example case for more details.

Easy
2 min
mca
Public
Oracle PL/SQL
Functions

Consider the following code:

CREATE OR REPLACE FUNCTION count_users 
RETURN NUMBER 
IS 
  user_count NUMBER;
BEGIN
  SELECT COUNT(*) INTO user_count FROM users;
  RETURN user_count;
END;
/

Select the statements that are correct.

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59 more premium Oracle PL/SQL questions

Bind Variables, Insert Employee, Query Performance, Lap Times, Remove Element, Merge Lists, Employee Salary, Index Performance, Matching Clothes, User Statistics, Computer Hardware Providers, Coworking Spaces, Manager Sales, Agents, Developers, Authors, Autocomplete, Bank Branches, Cheapest Product, Countries, Hospital Patients, Rectangles, Restaurant Menu, Poll, Sales, Employee Manager, Auto Show, Welfare Organization, Tasks, Student Rankings, Student Activities, Youngest Child, Average Salary, Movie Genres, ATM Locations, Merge Stock Index, Ban Users, Department Report, Ingredients, Roads, Retirees, Student Management, New Wages, Research Funding, Guest List, Player Division, Popular Category, Movies Live, Delete Orders, Users and Accounts, Product Data, Projects, Transactions, River Discharge, SMS Messages, Menu Items, Karting Leaderboard, Savepoint, Movies.

Skills and topics tested

  • Oracle PL/SQL
  • Bind Variables
  • Exceptions
  • Indexes
  • Performance Tuning
  • Transactions
  • Built-In Functions
  • Tables
  • Set
  • Union
  • Cursors
  • SQL
  • Conditions
  • Joins
  • Select
  • Collections
  • Aggregation
  • CTE
  • Recursion
  • Left Join
  • Right Join
  • Bug Fixing
  • Create Index
  • Database Schema
  • Constraints
  • Create Table
  • Subqueries
  • Ordering
  • Group by
  • Update
  • SQL CASE
  • Alter Table
  • Insert
  • Views
  • Delete
  • Database Normalization

For job roles

  • Data Analyst
  • Oracle Database Administrator
  • PL/SQL Developer

Sample candidate report

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