{"id":2498,"date":"2022-08-05T16:10:13","date_gmt":"2022-08-05T10:40:13","guid":{"rendered":"https:\/\/codequotient.com\/blog\/?p=2498"},"modified":"2024-02-14T17:31:22","modified_gmt":"2024-02-14T12:01:22","slug":"oracle-pl-sql-interview-questions","status":"publish","type":"post","link":"https:\/\/codequotient.com\/blog\/oracle-pl-sql-interview-questions\/","title":{"rendered":"Top 10 Oracle PL\/SQL Interview Questions You Must Know in 2022"},"content":{"rendered":"

Enlyft has found the total market share of Oracle PL\/SQL<\/a> to be 1.40%, and as many as 53,601 companies are using this language in the IT industry. This means that the language is still going strong, and your chances are bright if you aspire to be an Oracle PL\/SQL Developer.<\/p>\n

But the time for the interview is approaching, and you should have your interview questions swallowed in full. While you might already be done with the basics, here are some Oracle PL\/SQL interview questions that will provide you with an added advantage in the interview.<\/p>\n

So, without wasting any time. Let\u2019s start!<\/p>\n

Top 10 Oracle PL\/SQL Interview Questions<\/b><\/h2>\n

Oracle PL\/SQL is an SQL extension and can be understood as Procedural Language\/SQL. Developers use this language to develop complex database applications using various procedures, functions, modules, control structures, etc.<\/p>\n

Let\u2019s discuss the various Oracle PL\/SQL interview questions associated with this exciting language, and why not start with the most basic question?<\/p>\n

1. What Is PL\/SQL?<\/b><\/h3>\n

PL\/SQL is a procedural language that includes interactive SQL and procedural programming language constructs like iteration and conditional branching.<\/p>\n

2. What Is The Difference Between SQL and PL\/SQL?<\/b><\/h3>\n

This is one of the most straightforward and essential Oracle PL\/SQL interview questions. The answer is as follows:<\/p>\n

\"Difference-Between-SQL-and-PL-SQL\"<\/p>\n

3. What Do You Understand By MERGE Statement?<\/b><\/h3>\n

This statement helps update or insert rows in one table with data from one or more sources. Introduced in Oracle 9i version, it supports 9i or later version and finds its application in data warehousing apps.<\/p>\n

4. What Is The Difference Between \u201cVerify\u201d and \u201cFeedback\u201d Command?<\/b><\/h3>\n

Verify Command confirms the changes in the SQL statements.<\/p>\n

Syntax: SET VERIFY ON\/OFF<\/p>\n

The feedback command displays the number of records a query returned.<\/p>\n

5. Write A PL\/SQL Program To Raise A User-Defined Exception On Tuesday?<\/b><\/h3>\n

This program is a frequently asked Oracle PL\/SQL interview question. It is as follows:<\/p>\n

declare
\nc exception
\nbegin
\nIf to_char(sysdate, \u2018DY)=\u2019TUE\u2019
\nthen
\nraise c;
\nend if;
\nexception
\nwhen c then
\ndbms_output.put_line(\u2018my exception raised on Tuesday\u2019);
\nend
\n;<\/p>\n

The output will be received as \u201cmy exception raised on Tuesday\u201d<\/p>\n

6. List The Differences Between Truncate and Delete?<\/b><\/h3>\n

\"Differences-Between-Truncate-and-Delete\"<\/p>\n

7. What Do You Understand By Joins, And What Are Their Types?<\/b><\/h3>\n

Joins help retrieve data from more than one table based on the relationship between the fields of these tables; keys play a critical role here.<\/p>\n

The five different types of joins according to SQL: 1999(9i) are:<\/p>\n