{"id":8054,"date":"2025-09-12T05:14:27","date_gmt":"2025-09-12T05:14:27","guid":{"rendered":"https:\/\/www.hirist.tech\/blog\/?p=8054"},"modified":"2025-09-12T05:14:29","modified_gmt":"2025-09-12T05:14:29","slug":"top-25-oracle-sql-interview-questions-with-answers","status":"publish","type":"post","link":"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/","title":{"rendered":"Top 25+ Oracle SQL Interview Questions With Answers"},"content":{"rendered":"\n<p>Oracle SQL is a widely used language for managing and querying data in Oracle databases. It plays a key role in storing, retrieving, and organizing data across industries like finance, healthcare, and IT. From running reports to powering backend systems \u2013 Oracle SQL is essential for many business operations.&nbsp;Jobs like database developer, SQL analyst, and backend engineer often require strong SQL skills.&nbsp;If you are preparing for such roles, reviewing the most common Oracle SQL interview questions and answers is a smart way to get ready and increases your chances of success.<\/p>\n\n\n\n<p><strong>Fun Fact \u2013<\/strong> Oracle processes over 30 billion transactions per day, highlighting just how critical Oracle SQL is to global business operations.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Basic_Level_Oracle_SQL_Interview_Questions\" title=\"Basic Level Oracle SQL Interview Questions\">Basic Level Oracle SQL Interview Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Oracle_SQL_Interview_Questions_for_Freshers\" title=\"Oracle SQL Interview Questions for Freshers\">Oracle SQL Interview Questions for Freshers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Oracle_SQL_Interview_Questions_for_Experienced\" title=\"Oracle SQL Interview Questions for Experienced\">Oracle SQL Interview Questions for Experienced<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Oracle_SQL_Developer_Interview_Questions\" title=\"Oracle SQL Developer Interview Questions\">Oracle SQL Developer Interview Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Oracle_SQL_Query_Interview_Questions\" title=\"Oracle SQL Query Interview Questions\">Oracle SQL Query Interview Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Oracle_PL_SQL_Interview_Questions\" title=\"Oracle PL SQL Interview Questions\">Oracle PL SQL Interview Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Oracle_SQL_PL_SQL_Interview_Questions\" title=\"Oracle SQL PL SQL Interview Questions\">Oracle SQL PL SQL Interview Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Tips_to_Prepare_for_Oracle_SQL_Interview\" title=\"Tips to Prepare for Oracle SQL Interview\">Tips to Prepare for Oracle SQL Interview<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#Wrapping_Up\" title=\"Wrapping Up\">Wrapping Up<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#FAQs\" title=\"FAQs\">FAQs<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Basic_Level_Oracle_SQL_Interview_Questions\"><\/span>Basic Level Oracle SQL Interview Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Here are some commonly asked interview questions and answers for Oracle SQL to help you prepare for entry-level roles.<\/p>\n\n\n\n<ol>\n<li><strong>What is the difference between DELETE and TRUNCATE commands in SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>DELETE removes specific rows using a WHERE clause and can be rolled back. TRUNCATE removes all rows from a table quickly but cannot be rolled back. DELETE fires triggers; TRUNCATE does not. DELETE is DML; TRUNCATE is DDL.<\/p>\n\n\n\n<ol start=\"2\">\n<li><strong>Explain the purpose of a primary key in a database table.<\/strong><\/li>\n<\/ol>\n\n\n\n<p>A primary key uniquely identifies each record. It doesn\u2019t allow nulls or duplicate values. It helps maintain data accuracy by making sure each row stays unique. It also helps enforce relationships between tables.<\/p>\n\n\n\n<ol start=\"3\">\n<li><strong>What is the difference between WHERE and HAVING clauses in SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>WHERE filters rows before grouping. It is used with SELECT, UPDATE, or DELETE. HAVING filters after grouping and is used with aggregate functions like SUM, COUNT, or AVG.<\/p>\n\n\n\n<ol start=\"4\">\n<li><strong>How does a JOIN differ from a UNION in SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>A JOIN combines columns from related tables. A UNION combines results from two queries into one set, vertically. JOIN relates rows; UNION stacks rows.<\/p>\n\n\n\n<ol start=\"5\">\n<li><strong>What are indexes and how do they affect query performance?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Indexes speed up data retrieval. They use pointers to find rows faster. While helpful for reads, they slow down writes like INSERT or UPDATE due to maintenance overhead.<\/p>\n\n\n\n<ol start=\"6\">\n<li><strong>What are constraints in SQL? Give examples.<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Constraints enforce rules on table data. Examples include NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY, and CHECK. They help maintain valid, consistent, and meaningful data across the database.<\/p>\n\n\n\n<p><strong>Note <\/strong>\u2013 Basic-level Oracle and SQL interview questions typically cover foundational topics like data types, constraints, joins, filtering, and key differences between commands such as DELETE and TRUNCATE.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Oracle_SQL_Interview_Questions_for_Freshers\"><\/span>Oracle SQL Interview Questions for Freshers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>These Oracle SQL interview questions with answers are designed to help freshers build a strong foundation in SQL basics.<\/p>\n\n\n\n<ol start=\"7\">\n<li><strong>What is a foreign key and how is it used?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>A foreign key links two tables. It references the primary key of another table. This relationship maintains consistency between related data in different tables.<\/p>\n\n\n\n<ol start=\"8\">\n<li><strong>What is normalization and why is it important in database design?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Normalization organizes data to reduce redundancy. It breaks large tables into smaller ones and sets rules for relationships. This structure improves clarity and avoids data duplication.<\/p>\n\n\n\n<ol start=\"9\">\n<li><strong>What is a view in SQL and how is it different from a table?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>A view is a virtual table created from a SQL query. Unlike a table, it doesn\u2019t store data itself. It shows data from one or more tables in a custom format.<\/p>\n\n\n\n<ol start=\"10\">\n<li><strong>How would you retrieve unique records from a table?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>I would use the SELECT DISTINCT statement. It filters out duplicate rows from the result.&nbsp;<\/p>\n\n\n\n<p><strong>For example:<\/strong><\/p>\n\n\n\n<p>SELECT DISTINCT column_name FROM table_name;<\/p>\n\n\n\n<ol start=\"11\">\n<li><strong>What are aggregate functions in SQL? Name a few.<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Aggregate functions return a single value from a group of rows. Common ones are SUM(), AVG(), COUNT(), MAX(), and MIN(). I use them for totals, averages, and other summaries.<\/p>\n\n\n\n<ol start=\"12\">\n<li><strong>What is the purpose of the GROUP BY clause in SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>GROUP BY groups rows sharing the same values in columns. It is often used with aggregate functions. It helps me summarize data, like total sales by region or average salary by department.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Oracle_SQL_Interview_Questions_for_Experienced\"><\/span>Oracle SQL Interview Questions for Experienced<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Let&#8217;s go through some interview questions on Oracle SQL for experienced professionals.<\/p>\n\n\n\n<ol start=\"13\">\n<li><strong>How does the Oracle SQL optimizer determine an execution plan?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>The optimizer analyzes statistics like table size, indexes, and data distribution. It compares different ways to run a query and picks the one with the lowest estimated cost.<\/p>\n\n\n\n<ol start=\"14\">\n<li><strong>What is the difference between RANK and DENSE_RANK functions?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Both assign ranks to rows in a result set. RANK skips numbers when there are ties. DENSE_RANK does not.&nbsp;<\/p>\n\n\n\n<p>For example, if two rows share rank 1, RANK gives the next one rank 3, but DENSE_RANK gives it 2.<\/p>\n\n\n\n<ol start=\"15\">\n<li><strong>How would you troubleshoot a slow-running SQL query in Oracle?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>First, I would check the execution plan using EXPLAIN PLAN. Then I look at index usage, joins, and filtering. Sometimes adding indexes or rewriting subqueries improves performance. Stats might need refreshing too.<\/p>\n\n\n\n<ol start=\"16\">\n<li><strong>What are bind variables and why are they used in Oracle SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Bind variables are placeholders for values in queries. They help reduce parsing overhead and improve performance. They also protect against SQL injection by separating code from input data.<\/p>\n\n\n\n<ol start=\"17\">\n<li><strong>Explain the difference between row-level and statement-level triggers.<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Row-level triggers fire once per affected row. They can access data in each row. Statement-level triggers run once for the entire operation, regardless of how many rows are changed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Oracle_SQL_Developer_Interview_Questions\"><\/span>Oracle SQL Developer Interview Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Here are some commonly asked Oracle SQL Developer interview questions to help you prepare for developer-specific roles.<\/p>\n\n\n\n<ol start=\"18\">\n<li><strong>What is the difference between a correlated subquery and a non-correlated subquery?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>A correlated subquery references columns from the outer query. It runs once per outer row. A non-correlated subquery runs independently and executes only once.<\/p>\n\n\n\n<ol start=\"19\">\n<li><strong>How would you implement a running total in Oracle SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>I use the SUM() function with the OVER() clause. It looks like this:<\/p>\n\n\n\n<p>SELECT salary, SUM(salary) OVER (ORDER BY hire_date) AS running_total&nbsp;&nbsp;<\/p>\n\n\n\n<p>FROM employees;&nbsp;&nbsp;<\/p>\n\n\n\n<p>This adds each row\u2019s value to the sum of previous rows.<\/p>\n\n\n\n<ol start=\"20\">\n<li><strong>What is the MERGE statement used for in Oracle SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>MERGE performs insert, update, or delete in one statement. It is useful for syncing two tables. It checks if a match exists and applies the required action.<\/p>\n\n\n\n<ol start=\"21\">\n<li><strong>How do you use the EXPLAIN PLAN to analyze query performance?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>I run EXPLAIN PLAN FOR your_query; then view the plan with SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY);. It shows how Oracle executes the query and highlights potential slow operations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Oracle_SQL_Query_Interview_Questions\"><\/span>Oracle SQL Query Interview Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Here are frequently asked Oracle SQL query interview questions that test your ability to write and optimize SQL statements.<\/p>\n\n\n\n<ol start=\"22\">\n<li><strong>Write a query to find employees who earn more than their managers.<\/strong><\/li>\n<\/ol>\n\n\n\n<p>SELECT e.employee_id, e.salary&nbsp;&nbsp;<\/p>\n\n\n\n<p>FROM employees e&nbsp;&nbsp;<\/p>\n\n\n\n<p>JOIN employees m ON e.manager_id = m.employee_id&nbsp;&nbsp;<\/p>\n\n\n\n<p>WHERE e.salary &gt; m.salary;<\/p>\n\n\n\n<ol start=\"23\">\n<li><strong>How would you write a query to find duplicate rows in a table?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>SELECT column1, COUNT(*)&nbsp;&nbsp;<\/p>\n\n\n\n<p>FROM table_name&nbsp;&nbsp;<\/p>\n\n\n\n<p>GROUP BY column1&nbsp;&nbsp;<\/p>\n\n\n\n<p>HAVING COUNT(*) &gt; 1;<\/p>\n\n\n\n<p>This finds values in column1 that appear more than once.<\/p>\n\n\n\n<ol start=\"24\">\n<li><strong>Write a query to return the top 3 products by total sales revenue.<\/strong><\/li>\n<\/ol>\n\n\n\n<p>SELECT product_id, SUM(revenue) AS total&nbsp;&nbsp;<\/p>\n\n\n\n<p>FROM sales&nbsp;&nbsp;<\/p>\n\n\n\n<p>GROUP BY product_id&nbsp;&nbsp;<\/p>\n\n\n\n<p>ORDER BY total DESC&nbsp;&nbsp;<\/p>\n\n\n\n<p>FETCH FIRST 3 ROWS ONLY;<\/p>\n\n\n\n<ol start=\"25\">\n<li><strong>How do you pivot rows into columns in Oracle SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Use the PIVOT operator (Oracle 11g+).&nbsp;<\/p>\n\n\n\n<p><strong>Example:<\/strong><\/p>\n\n\n\n<p>SELECT *&nbsp;&nbsp;<\/p>\n\n\n\n<p>FROM sales&nbsp;&nbsp;<\/p>\n\n\n\n<p>PIVOT (SUM(amount) FOR month IN (1 AS Jan, 2 AS Feb, 3 AS Mar));<\/p>\n\n\n\n<p>It turns month values into columns.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Oracle_PL_SQL_Interview_Questions\"><\/span>Oracle PL SQL Interview Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Here are some important Oracle PL SQL interview questions and answers.<\/p>\n\n\n\n<ol start=\"26\">\n<li><strong>What is the difference between a procedure and a function in PL\/SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>A function returns a value; a procedure does not. Functions can be used in SQL statements, while procedures are called explicitly. Both can take parameters and include logic.<\/p>\n\n\n\n<ol start=\"27\">\n<li><strong>What is a trigger in PL\/SQL and when would you use it?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>A trigger is a block that runs automatically on an event like INSERT, UPDATE, or DELETE. I use it to track changes, enforce rules, or update audit tables.<\/p>\n\n\n\n<ol start=\"28\">\n<li><strong>How is exception handling implemented in PL\/SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>PL\/SQL uses BEGIN&#8230;EXCEPTION&#8230;END blocks. I catch errors using specific exceptions like NO_DATA_FOUND or TOO_MANY_ROWS. I can also define custom exceptions with RAISE.<\/p>\n\n\n\n<ol start=\"29\">\n<li><strong>What is the purpose of using cursors in PL\/SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Cursors let me fetch query results row by row. They are useful when I need to process each row individually, especially in complex business logic that loops through data.<\/p>\n\n\n\n<pre class=\"wp-block-verse\"><strong>Also Read - <a href=\"https:\/\/www.hirist.tech\/blog\/top-30-pl-sql-interview-questions-and-answers\/\" target=\"_blank\" rel=\"noreferrer noopener\">Top 30+ PL\/SQL Interview Questions and Answers<\/a><\/strong><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Oracle_SQL_PL_SQL_Interview_Questions\"><\/span>Oracle SQL PL SQL Interview Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Here are top interview questions on Oracle SQL and PL SQL with answers to help you prepare for both query-based and procedural programming roles.<\/p>\n\n\n\n<ol start=\"30\">\n<li><strong>How would you manage transactions in PL\/SQL using COMMIT, ROLLBACK, and SAVEPOINT?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>I use COMMIT to make changes permanent. ROLLBACK undoes changes since the last commit. SAVEPOINT lets me mark a point to roll back to without undoing the whole transaction.<\/p>\n\n\n\n<ol start=\"31\">\n<li><strong>What are the key differences between SQL and PL\/SQL?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>SQL is used for data queries and updates. PL\/SQL adds procedural features like loops and conditions. PL\/SQL supports blocks, functions, and error handling. SQL runs one statement; PL\/SQL runs multiple as a block.<\/p>\n\n\n\n<ol start=\"32\">\n<li><strong>Explain the use of packages in Oracle PL\/SQL.<\/strong><\/li>\n<\/ol>\n\n\n\n<p>Packages group related procedures, functions, variables, and cursors. The package spec defines the interface. The body holds the logic. I use them to organize code and reduce recompilation.<\/p>\n\n\n\n<ol start=\"33\">\n<li><strong>How would you schedule and run a PL\/SQL block using DBMS_SCHEDULER?<\/strong><\/li>\n<\/ol>\n\n\n\n<p>I use DBMS_SCHEDULER.CREATE_JOB. It lets me define the PL\/SQL block, schedule time, and set recurrence. I activate the job using ENABLE. It is useful for automating tasks like reports or cleanup scripts.<\/p>\n\n\n\n<pre class=\"wp-block-verse\"><strong>Also Read - <a href=\"https:\/\/www.hirist.tech\/blog\/top-50-sql-interview-questions-and-answers\/\" target=\"_blank\" rel=\"noreferrer noopener\">Top 50+ SQL Interview Questions and Answers<\/a><\/strong><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tips_to_Prepare_for_Oracle_SQL_Interview\"><\/span>Tips to Prepare for Oracle SQL Interview<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Preparing for an Oracle and SQL interview questions requires strong basics and confidence in solving real-world query problems. Here are some tips you can follow \u2013<\/p>\n\n\n\n<ul>\n<li>Review core SQL concepts like joins, subqueries, and aggregate functions<\/li>\n\n\n\n<li>Practice writing queries by hand to improve recall<\/li>\n\n\n\n<li>Understand execution plans and indexing<\/li>\n\n\n\n<li>Solve scenario-based tasks using mock tables<\/li>\n\n\n\n<li>Go through Oracle SQL questions for practice from recent interviews<\/li>\n\n\n\n<li>Learn how to read and debug SQL output correctly<\/li>\n\n\n\n<li>Practice explaining your logic clearly during mock interviews<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-verse\"><strong>Also Read - <a href=\"https:\/\/www.hirist.tech\/blog\/top-50-oracle-interview-questions-and-answers\/\" target=\"_blank\" rel=\"noreferrer noopener\">Top 50+ Oracle Interview Questions and Answers<\/a><\/strong><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Wrapping_Up\"><\/span>Wrapping Up<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>With these 25+ Oracle SQL interview questions and answers, you will have a better chance of success. Focus on both writing and explaining queries clearly. Practice regularly and stay updated with new features in Oracle.<\/p>\n\n\n\n<p>Looking for <a href=\"https:\/\/www.hirist.tech\/k\/sql-jobs?ref=blog\">Oracle SQL jobs<\/a>? Find top IT openings on Hirist and get the right role that fits your skills and career goals.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1757653368201\"><strong class=\"schema-faq-question\"><strong>Are Oracle SQL questions difficult?<\/strong><\/strong> <p class=\"schema-faq-answer\">Oracle SQL interview questions can be difficult, depending on the role. For entry-level positions, most questions focus on SQL basics like joins, filters, and functions. Advanced roles may involve performance tuning, complex queries, or procedural logic.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757653380971\"><strong class=\"schema-faq-question\"><strong>Where can I find Oracle SQL questions for practice?<\/strong><\/strong> <p class=\"schema-faq-answer\">You can find updated Oracle SQL questions for practice through mock interviews, coding exercises, and technical blogs. You can also use the questions we have covered in this blog to practice and strengthen your understanding before the interview.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757653387692\"><strong class=\"schema-faq-question\"><strong>Are Oracle SQL and PL SQL interview questions hard?<\/strong><\/strong> <p class=\"schema-faq-answer\">For many, PL\/SQL adds complexity because it includes procedural logic, exception handling, and triggers. With hands-on practice, most concepts become manageable \u2013 even for freshers.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757653395676\"><strong class=\"schema-faq-question\"><strong>What is the average salary for Oracle SQL developers in India?<\/strong><\/strong> <p class=\"schema-faq-answer\">As per AmbitionBox, Oracle SQL Developers with 1\u20134 years of experience earn between \u20b95.7 Lakhs to \u20b98 Lakhs annually. The average annual salary is around \u20b96.3 Lakhs. This translates to a monthly in-hand salary of approximately \u20b948,000 to \u20b949,000.\u00a0<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757653409243\"><strong class=\"schema-faq-question\"><strong>Which companies hire for Oracle SQL roles?<\/strong><\/strong> <p class=\"schema-faq-answer\">Top employers include Oracle, TCS, Infosys, Accenture, Cognizant, HCLTech, and product-based firms like ZOHO, Freshworks, and fintech companies.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757653415569\"><strong class=\"schema-faq-question\"><strong>How many interview rounds are there for Oracle SQL jobs?<\/strong><\/strong> <p class=\"schema-faq-answer\">Typically 2\u20133 rounds. One technical round (SQL\/PLSQL), one problem-solving or query-writing round, and an HR or managerial discussion.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1757653426664\"><strong class=\"schema-faq-question\"><strong>Do I need to know PL\/SQL for all Oracle SQL jobs?<\/strong><\/strong> <p class=\"schema-faq-answer\">Not always. Some analyst or reporting roles focus purely on SQL. Developer or DBA roles often need PL\/SQL knowledge.<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Oracle SQL is a widely used language for managing and querying data in Oracle databases.&hellip;<\/p>\n","protected":false},"author":1,"featured_media":8064,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,28,19],"tags":[32,34,33,83],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Top 25+ Oracle SQL Interview Questions With Answers - Hirist Blog<\/title>\n<meta name=\"description\" content=\"Top Oracle SQL Interview Questions &amp; Answers \u2014 basic to advanced queries, schema design, indexing &amp; performance to assess your skills.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 25+ Oracle SQL Interview Questions With Answers - 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This translates to a monthly in-hand salary of approximately \u20b948,000 to \u20b949,000.\u00a0","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#faq-question-1757653409243","position":5,"url":"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#faq-question-1757653409243","name":"Which companies hire for Oracle SQL roles?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Top employers include Oracle, TCS, Infosys, Accenture, Cognizant, HCLTech, and product-based firms like ZOHO, Freshworks, and fintech companies.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#faq-question-1757653415569","position":6,"url":"https:\/\/www.hirist.tech\/blog\/top-25-oracle-sql-interview-questions-with-answers\/#faq-question-1757653415569","name":"How many interview rounds are there for Oracle SQL jobs?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Typically 2\u20133 rounds. 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Developer or DBA roles often need PL\/SQL knowledge.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/posts\/8054"}],"collection":[{"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/comments?post=8054"}],"version-history":[{"count":9,"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/posts\/8054\/revisions"}],"predecessor-version":[{"id":8063,"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/posts\/8054\/revisions\/8063"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/media\/8064"}],"wp:attachment":[{"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/media?parent=8054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/categories?post=8054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hirist.tech\/blog\/wp-json\/wp\/v2\/tags?post=8054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}