Tricky Oracle Sql Queries For Interview

SELECT program application, COUNT (program) Numero_Sesiones FROM v$ session GROUP BY program ORDER BY Numero_Sesiones DESC; Oracle SQL query that shows Oracle users connected and the sessions number for user. as table aliases in your SQL statements. SQL Server 2017 brings data insights with business intelligence capabilities that provide analytics at a fraction of the cost on any device along with advanced analytics with support for R and Python. What is Cursor?Why cursor is required? cursor is named private sql area from where information can be accessed. Tricky sql interview questions and answer Guys generally we see that interviewer asked very easy question but question is very tricky. Interview Questions for Project accounting modules. This article will discuss the top-most PL/SQL interview question and answers. What is the difference between SQL Server and Oracle? Even though both Oracle and SQL Server. Top 50 SQL Interview Questions & Answers. This is part 2 of our advanced practice SQL interview questions and answers. 18+ Best Online Resources for Learning SQL and Database Concepts. Suggestions, comments, feedbacks and referrals are highly appreciated. You might have heard of SQL profile and SQL baselines in performance tuning chapters. the Records Will Be Stored In The Nested Table Which Is Physically Stored Out Side The Table. What is proactive tuning and reactive tuning? In Proactive Tuning, the application designers can then determine which combination of system resources and available Oracle features best meet the needs during design and development. Interview Questions on SQL are based on following two tables, Employee Table and Employee Incentive Table. We checked out a range of SQL interview questions posted online by SQL experts, and by those who have sat on both sides of the interview table. Here are some complex SQL interview problems that are for people who are looking for more advanced and challenging questions, along with the answers and complete explanations. We will be referring tables from default schema/user SCOTT in Oracle. Oracle PL/SQL adds support for procedural language features such as control statements, loops and classes. This is perhaps the most widely used of SQL queries examples. And queries in. Pronounced "ess-cue-ell" and short for Structured Query Language, this incredible tool is a must-have for analyzing large data sets. 1) What is SQL? SQL stands for the Structured Query Language. Oracle 10g+ uses something called the CBO (Cost-Based Optimizer) which determines the most efficient way to execute a SQL statement after considering many factors related to the objects referenced and the conditions specified in the query. MySQL is an open-source DBMS that is built, supported and distributed by MySQL AB. Few common mistakes are as follows: Usage of views such as org_organization_definitions in a query will degrade the performance because some of the views contain many unnecessary tables present in it. Free Oracle Online Practice Tests 50 Tests found for Oracle 7936 Attempts Oracle 9i, Structured Query Language oracle pl sql interview questions, oracle. SQL Quiz is a free form of SQL training, which can be used over and over again until you are confident in your SQL skills. CDB_* views are container data objects. SQL, SQL Server, Tutorials, Oracle, PL/SQL, Interview Questions & Answers, Joins, Multiple Choice Questions, Quiz, Stored Procedures, Select, Insert, Update, Delete. 3, and Oracle Database 11g on the learn stage in addition. A blog for Oracle HRMS lovers. Oracle Interview Questions provides you a wide range of questions that can be asked during a Interview. inline view in sql - An inline view is a SELECT statement in the FROM-clause of another SELECT statement. SQL Interview Questions (few questions are repeated with small differences in their answers) What Is SQL? SQL (pronounced as the letters S-Q-L or as sequel) is an abbreviation for Structured Query Language. experienced,latest sql. Performance of SQL queries are critical to any application that is built to use Oracle and I say Oracle because this blog is specifically for Oracle SQL. It was developed by IBM in the 1970s for use in System R. Top 65 PL/SQL Interview Questions & Answers. What is SQL? SQL is short for Structured Query Language and is used to communicate with relational databases. In Teradata we can have so many interview questions. There are lots of tricky and real time scenario queries asked during technical interview. Oracle SQL/PLSQL. net • Free ebook: 75 interview questions and answers • Top 12 secrets to win every job interviews • 13 types of interview quesitons and how to face them • Top 8 interview thank you. Must have strong PL SQL stored procedure, packages, functions, & triggers. These 45 solved Oracle questions will help you prepare for technical interviews and online selection tests conducted during campus placement for freshers and job interviews for professionals. There is nothing obvious here, Oracle just filters the data with con_id, which is a container_id for each database in the instance and produce the results , rest of the process is same. Oracle Scenarios guideline for job interview preparation. Personally, I have a lot more fun with mid-to-senior level positions as it opens the door to asking tricky C# and SQL interview questions just to see how well they know their stuff, and if they don't know, how they handle it. This is a list of top PL-SQL interview questions and answers compiled by industry experts working in the PL/SQL domain. In this SQL Interview Questions blog, I will introduce you to the most frequently asked questions on SQL (Structured Query Language). Oracle Interview Questions provides you a wide range of questions that can be asked during a Interview. We can override queries to make them use indexes and to get better execution plan. and for all modern database systems such as MS SQL Server, Oracle and MySQL. PL/SQL is used to write program blocks, functions, procedures triggers,and packages. This is perhaps the most widely used of SQL queries examples. You can specify an SQL Statement in an XML file, and results of that SQL Statement are published as XMLP Output. what is package. Become Job-Ready and Launch Your Career as a Certified Oracle SQL Difficult interview questions on Oracle. February 14, 2018 - 5:28 pm UTC. SQL Interview Questions You pick up the candidate's resume and it proudly proclaims "SQL Expert: 10 Years. When it comes to hiring a SQL Server developer, we can pepper candidates with HR-type questions (“Tell me about a time when you had a conflict with a co-worker and how you resolved it. NET MVC C# client side client side validation CSS DateFormats EDMX EPPlus Excel Facebook file uploading git git-code-versioning git-command git-local-server github Gmail Google Identity iTextSharp JavaScript Jquery Kendo UI Linq log4net Logging MVC MVC5 Nolock Optimization Send Mail Server Side Session. For Investigation of this information the developer is supposed to analyse report/dashboard SQL queries, Sometimes the length of these queries are quite huge. In this article, Ben Brumm discusses ten best practice when writing SQL code for Oracle. By studying this list of Oracle interview questions and answers, you’ll be forced to think critically about what you already know, learn and study new concepts, and be prepared to show the interviewer your knowledge. Need solid PL/SQL developer who will support reporting team by write complex queries and stored procedures to generate reports Essential Skills Oracle application development using SQL and PL/SQL. Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. - Gordon Linoff Jul 2 '17 at 16:23. From basics up to questions asked on advanced concepts of SQL have been also covered in this article. ECO '96 Real World Client/Server www. Step by Step: How to troubleshoot a slow running query in Oracle This is a day to day task of a DBA. But this query helps you to understand many aspects of database concepts, ranging from DBA task to PL/SQL. Oracle SQL/PLSQL. A free inside look at SQL Developer interview questions and process details for 140 companies - all posted anonymously by interview candidates. Four questions you should ask a DBA job candidate Donald Burleson Although the labor market is not as tight as it was a couple of years ago, recruiting top Oracle talent is still a challenge—especially finding the right blend of technical skill and people skills. We checked out a range of SQL interview questions posted online by SQL experts, and by those who have sat on both sides of the interview table. Database Research & Development: SQL Server Interview Questions and Answers on, Database Indexes, Clustered - Non Clustered Index, Hash Index, Filtered Index, Full - Text Index, Covered Index (Day-1). This is the Computer Science Questions & Answers section on & Oracle, SQL & PL/SQL& with explanation for various interview, competitive examination and entrance test. If not what is the scope of a table variable?, Interview Qs. SQL DBA does the administrator job where the system is configured with the needed software and maintain the Relational Databases. These tricky queries may be required in your day to day database usage. Pronounced "ess-cue-ell" and short for Structured Query Language, this incredible tool is a must-have for analyzing large data sets. For example to retrieve all rows from emp table. how to do it by SQL query? Thanks for sharing the these helpful query and answers for these queries. This chapter contains these sections: About Queries and Subqueries. database itself. If you have two SQL database tables that are not joined together, how would you create another table to join them. Personally, I have a lot more fun with mid-to-senior level positions as it opens the door to asking tricky C# and SQL interview questions just to see how well they know their stuff, and if they don't know, how they handle it. This is a new feature of 10g that enables us to embed single-quotes in literal strings without having to resort to double, triple or sometimes quadruple quote characters. With linked servers and distributed queries, you can query all sorts of data sources and merge them on the fly with your SQL Server database. Please provide Oracle SQL and PLSQL questions. Oracle tricky queries How to write a CLOB with a length > 40K out to a file? There is a database limit which only allows at the most 32760 characters to be written at one time. He has authored 12 SQL Server database books, 24 Pluralsight courses and has written over 4900 articles on the database technology on his blog at a https://blog. PL/SQL interview questions: PL/SQL developers are in huge demand these days, as the platform has nothing but great benefits to offer. " Your boss trusts you, as the technical expert on the team, to participate briefly in the interview to gauge this individual's knowledge of SQL. It is most commonly used to select pseudo columns in Oracle like sysdate. Hierarchical Queries. Our experts will help you out with all the fundamental Oracle SQL interview questions that may be asked to test your database skills. We highly suggest that you read part 1 of our Advanced SQL interview Questions before reading this, since a lot of the concepts presented in this portion are discussed in more depth in part 1. 9 SQL Queries and Subqueries. That is why You should follow the syntax of. But this query helps you to understand many aspects of database concepts, ranging from DBA task to PL/SQL. You might also be interested in: /r/database /r/sql /r/Azure /r/Microsoft. Try to figure out the answer to the questions yourself before reading the answers. The CONTAINER_DATA clause of the SQL ALTER USER statement is used to set and modify users' CONTAINER_DATA attribute. Suggestions, comments, feedbacks and referrals are highly appreciated. PL/SQL helps the user to develop complex database applications using control structures, procedures, function, modules, etc. In the example below. Its a good practice to go through all of these. 90 most popular SQL interview questions and answers: These are the most common and useful SQL interview questions useful for freshers as well as experienced candidates. Are you preparing for your sql developer interview? Then you have come to the right place. For queries that returning more than one row, the cursor needs to be explicitly declared. 6 common SQL Query Questions. SQL Server Interview Questions and Answers Q1). SQL Server 2017 brings data insights with business intelligence capabilities that provide analytics at a fraction of the cost on any device along with advanced analytics with support for R and Python. The TRUNC (number) function returns n1 truncated to n2 decimal places. Writing Efficient Queries. If not what is the scope of a table variable?, Interview Qs. SQL is executed one statement at a time. It is the standard language used to retrieve, update, insert, and delete data when working with. This has the impact of:. How It Works. What is difference between stored procedures and application procedures,stored function and application function? Difference between Stored Procedure and Application Procedure:. I read some of those from Gitesh Trivedi's book called Oracle DBA Interview Questions And Answers 5th edition. Oracle the number one Business solution company also It is most powerful database management system. Oracle SQL Plus Statements Interview Questions and Answers. SQLPlus provides many useful options and. SQL is a standard query language used for maintaining the relational database and perform many different operations. which may ask in interview with examples. Top-N Queries. In this article, Dennes Torres demonstrates how to use the new SHORTEST_PATH function that is part of the Graph Database feature. Password of document – osst. A few readers have left private comments asking me what kinds of interview questions I've asked potential candidates. experienced,latest sql. or VARRAY or PL/SQL Table type out parameters which can return more than one value. Oracle SQL query that show the opened connections group by the program that opens the connection. It has tales of bringing normally rationale people to a terrified state. This has the impact of:. Listen to an interview with our new CEO. Oracle Scenarios guideline for job interview preparation. ) SQL Interview Question #2. Basically, a tool which we call a data warehousing tool is Hive. Oracle Database Forums on Bytes. Top 40 Oracle sql interview questions. Tough Oracle Sql Interview Questions And Answers A great guide to answering tough database and SQL interview questions. f) SQL Server reduces downtime by over 20% by migrating an SAP ERP environment to SQL Server. Difference between SQL Server 2000 & SQL Server 2005 features, or new features of 2005 vs 2000. First up the cross join gives you every row from the table combined with itself. Database testing can be used in the applications of Oracle or SQL. OK, the position wasn't perfect; roads are narrow, and it would be difficult to. Kendba is a part of Dbametrix. ECO '96 Real World Client/Server www. Top 20 sql queries interview questions and answers If you need top 7 free ebooks below for your job interview, please visit: 4career. I have even heard of a DBA that was so worried about a SQL Server phone interview that 'they just happened to be in the office park' where the company was located and actually wanted the interview face to. In the example below. IQ15: 6 SQL Query Interview Questions The Coding Interview. It is now owned by Oracle. MySQL and Microsoft’s SQL Server both are relational database management systems that use SQL as their standard relational database language. More SQL: Complex Queries This chapter describes more advanced features of the SQL language standard for relational databases. A list of top frequently asked MySQL interview questions and answers are given below. TRUNC (number) Syntax. From these interview questions, you will understand 'what is the importance of PL/SQL?', database triggers, PL/SQL compilation process, PL/SQL packages, tracing a PL/SQL code, PL/SQL functions and procedures, and Joins and Views in PL/SQL. I've often thought about this 51 ORACLE SQL PL/SQL INTERVIEW QUESTIONS. Top 50 SQL Interview Questions & Answers. How to find Table Fragmentation? In Oracle schema there are tables which has huge difference in actual size (size from User_segments) and expected size from user_tables (Num_rows*avg_row_length (in bytes)). Oracle Performance Tuning Interview Questions And Answers. HIGH REDUNDANCY – Three-way mirroring, requiring three failure groups. According to research Oracle PL SQL has a market share of about 2. And queries in. write a query to delete duplicate rows. SAS Interview Questions and answers for fresher, experienced includes Basic & Advanced SAS Interview Questions, SAS Logical & Analytics Interview Questions, SAS Tricky Interview Questions Today's Offer - SQL Server Certification Training - Enroll at Flat 20% Off. I've often thought about this 51 ORACLE SQL PL/SQL INTERVIEW QUESTIONS. We will be referring tables from default schema/user SCOTT in Oracle. SQL, a programming language used to communicate with databases, is one of the most useful skills to know for recruiting in the tech industry. or VARRAY or PL/SQL Table type out parameters which can return more than one value. Whilst each SQL job will be different and every company will have a varied set of criteria for candidates, there are some key SQL interview questions that you will most probably get asked. Each question contains their answer also. You work for a startup that makes an online presentation software. s search c compose new post r reply e edit t go to top j go to the next post or comment k go to the previous post or comment o toggle comment visibility esc cancel. Skip navigation Sign in. What is SQL Azure Federations? SQL Azure federation provides tools that allow developers to scale out (by sharding) in SQL Azure. difference between procedure and function. SQL Joins is always an important topic of SQL Server. How can you find papers the use both. What is PL-SQL ? Oracle PL/SQL is a procedural language that has both interactive SQL and procedural programming language constructs such as iteration, conditional branching. Here are five typical SQL interview questions, along with some tips to help you answer them effectively: 1. Advanced SQL Interview Questions and Answers. Try to figure out the answer to the questions yourself before reading the answers. Disk group redundancy types:-NORMAL REDUNDANCY – Two-way mirroring, requiring two failure groups. Oracle SQL/PLSQL. SELECT program application, COUNT (program) Numero_Sesiones FROM v$ session GROUP BY program ORDER BY Numero_Sesiones DESC; Oracle SQL query that shows Oracle users connected and the sessions number for user. CASE expects datatype consistency, DECODE does not. IQ15: 6 SQL Query Interview Questions The Coding Interview. SQL is incredibly powerful, and like every well-made development tool, it has a few commands which it's vital for a good developer to know. PL/SQL theoretical questions. Top 40 Oracle sql interview questions. In SQL Server, PostgreSQL, and SQLite, this can be done using the except keyword as follows: select * from test_a except select * from test_b; In Oracle, the minus keyword is used instead. MySQL is an open-source DBMS that is built, supported and distributed by MySQL AB. ¨SQL provides broad support for nested subqueries ¤A SQL query is a “select-from-where” expression ¤Nestedsubqueriesare “select-from-where” expressions embedded within another query ¨Can embed queries in WHEREclauses ¤Sophisticated selection tests ¨Can embed queries in FROMclauses ¤Issuing a query against a derived relation. As a database developer, writing SQL queries, PLSQL code is part of daily life. Database testing can be used in the applications of Oracle or SQL. Group functions allow you to perform data operations on several values in a column of data as though the column were one collective group of data. When a user connected to the root queries a CDB_* view, the query results will depend on the CONTAINER_DATA attribute for users for the view. If you found any information incorrect or missing in above list then please mention it by commenting below. Could you please let mw know what the ares which gets impacted from DB Development Team prospective. Microsoft SQL Server 2019 | Features added to SQL Server on Linux. SQL Query in SQL Server interview questions These SQL Query in SQL Server questions have been designed for various interviews, competitive exams and entrance tests. But, with a little revision of some SQL interview questions and some tips, they are much easier. These are the following common question that I faced in various TSQL interviews. Hey there are more. What is SQL? SQL is short for Structured Query Language and is used to communicate with relational databases. Please provide Oracle SQL and PLSQL questions. This course is designed to help you master SQL interview question. What is the importance of driver in Hive? Ans. Even though most of our work is based around Microsoft SQL Server and the test machine we provide is connected to an MS SQL database, the interview test should fit any database engine - Oracle, PostgreSQL, MySQL - anything, since it's very basic. This allows the developer to further optimize and refine queries at the database, rather than application layer. database itself. By Brendan Tierney. Ask Question Very tricky: Can't update a sequential list SQL-92. Also, during many discussions, I got to know some most asked queries in a SQL tech interview. write a query to delete duplicate rows. Along with 16+ years of hands on experience he holds a Masters of Science degree and a number of database certifications. Oracle Interview questions : Basics , Oracle SQL. In this article, I will try to explain the Complex SQL Interview Questions. They are extremely useful when you want to return the top or bottom "N" number of rows from a set or when you are paging through data. SQL> select empno, ename, sal from emp; Or (if you want to see all the columns values. Q) Which statement is wrong about - Page 5 of 5. Top 40 Oracle sql interview questions. For PL/SQL interview questions, visit our next page. What Is SQL? SQL (Structured Query Language) is a database which was design to. Here are some well-crafted SQL interview questions that can help you find the right SQL developer for your needs. oracle-users. SQL Query Interview Questions. Sqlldr Interview questions SQL*Loader is a bulk loader utility used for moving data from external files into the Oracle database. This article is an attempt to answer the most asked essential queries in SQL Server technical interviews, based on my own experience. Oracle PL/SQL adds support for procedural language features such as control statements, loops and classes. oracle sql. or if you have materials pls mail me on [email protected] Home > Interview Question and Answer > Oracle > Oracle SQL Plus. Even questions are very easy but bit difficult to give the answer. Solved examples with detailed answer description, explanation are given and it would be easy to understand. The following are examples of some queries that you can issue directly against the Catasto data set. With our Oracle query optimization tool, you can view detailed execution plans, and session statistics for each run of a query. There are 2 reports in the dashboard, and there is a user called &#. The set of Redo Log files YSDATE,UID,USER or USERENV SQL functions, or the. Expert Remote DBA team of Dbametrix provides reliable database services and kendba provides online Oracle training. Having a good knowledge on SQL is really important. F Codd was a Computer Scientist who invented the Relational model for Database management. Just for fun, I have history files going back 10 yrs. SQL queries most asked in. SQL – Simple Queries Chapter 3. However, Hive gives SQL queries to perform an analysis and also an abstraction. Oracle Database Administrator Interview questions and answers. Our project DBA Team is planning to migrate Oracle DB from version 11. We highly suggest that you read part 1 of our Advanced SQL interview Questions before reading this, since a lot of the concepts presented in this portion are discussed in more depth in part 1. I don’t want to take much time of yours but I couldn’t move further without mentioning about this inevitable job interview question which every hiring manager asks you in any interview i. Its a command line tool that allows user to type SQL commands to be executed directly against an Oracle database. What is a query? AUTO INCREMENT keyword can be used in Oracle and IDENTITY keyword can be used in SQL SERVER. Four questions you should ask a DBA job candidate Donald Burleson Although the labor market is not as tight as it was a couple of years ago, recruiting top Oracle talent is still a challenge—especially finding the right blend of technical skill and people skills. to use an index on a query? Yes, in Oracle we can force the database to use the index by using HINTS. SQL query to find Open/Close. OK, the position wasn't perfect; roads are narrow, and it would be difficult to. This is a collection of tricky sql queries, usually asked inthe interviews. However, Hive gives SQL queries to perform an analysis and also an abstraction. Nice to have it laid out so clearly. SQL interview questions are asked in almost all interviews because database operations are very common in applications. How would you find the performance issue of SQL. This short article introduces Oracle's new quoting mechanism in PL/SQL. Sometimes it comes down to. So we will not get the result in the order described in the. DBMS can be labeled as File Manager that accomplishes data in a database somewhat than convertible it in file arrangements. With linked servers and distributed queries, you can query all sorts of data sources and merge them on the fly with your SQL Server database. Each question contains their answer also. Most commonly asked 25 oracle plsql interview questions. I'm sure it will help everyone. To be precise SQL (Structured Query Language) SQL (Structured Query Language) is a standardized programming language used for managing relational databases and performing various operations on the data. This has the impact of:. Test execution: If a SQL profile is recommended, the database tests the new SQL profile by executing the SQL statement both with and without the SQL profile. Through the back-end data, the integrity of front-end data is verified. They are extremely useful when you want to return the top or bottom "N" number of rows from a set or when you are paging through data. So we will not get the result in the order described in the. Its a good practice to go through all of these. ” People who have actually worked on CTEs and know about recursive CTEs can guess the answer and create the query on-spot. It may or may not return values. Consider you have a composite index of three columns. Define Query? A query is a read–only transaction against a database. Go through it as well to get fully prepared for your SQL interview. Advanced SQL questions would involve more advanced SQL operations, but could also get into the details of Oracle or SQL Server specific constructs. Tricky sql interview questions and answer Guys generally we see that interviewer asked very easy question but question is very tricky. Tricky interview questions for Oracle DBAs and Apps DBAs Hi DBAs, It is long time I didn't wrote and share my knowledge with you all,so thought of sharing some interesting interview question. Tricky OBIEE Interview Question One of the beautiful question I have faced in one of the Interview. Date / Time related queries 1. But this query helps you to understand many aspects of database concepts, ranging from DBA task to PL/SQL. From basics up to questions asked on advanced concepts of SQL have been also covered in this article. Although, it validates the database tables, triggers, junk records, and perform record modification. To get you going with practicing SQL in local database on your computer, we have put together list of 200 SQL and PLSQL Queries for Practice. A free inside look at SQL Developer interview questions and process details for 140 companies - all posted anonymously by interview candidates. Welcome to SQL Quiz. The SQL below will give you the correct answer – but you will have to plug in an actual value for N of course. You work for a startup that makes an online presentation software. A tricky Oracle DDL question from a real job interview October 14, 2015 June 29, 2017 Zahar Hilkevich Recently I was asked the following question during the phone interview with one of the large companies:. This blog is the perfect guide for you to learn all the concepts related to SQL, Oracle, MS SQL Server and MySQL database. TRICKY MS SQL SERVER QUERIES INTERVIEW QUESTIONS ANSWERS 4 FRESHER AND EXPERIENCED WITH EXAMPLES PDF Hey there are more. sqlauthority. The following are examples of some queries that you can issue directly against the Catasto data set. Oracle Reports Interview Questions and Answers includes, different file extensions that are created by oracle reports, designation, lexical reference, bind reference, use of command line parameter cmd file, external pl/sql library executed, default parameter, read level consistency. It is the standard language used to retrieve, update, insert, and delete data when working with. It may or may not return values. What is PL/SQL? Answer: PL/SQL is Oracle's Procedural Language extension to SQL. Select A Course. database itself. Oracle SQL interview questions and answers Posted by Dayakar at 09:31 Labels: INTERVIEW QUESTIONS The following SQL Interview Question and Answers created based on my person experience, I hope it will use for you while you are facing SQL interview, These are very frequently asking question and answers ( FAQS ) in SQL interview. But this query helps you to understand many aspects of database concepts, ranging from DBA task to PL/SQL. The default is 50… So if I run a query that returns MORE than 50 rows:. PL/SQL Complex SQL Queries 1. What is SQL profile: SQL profile is a collection of additional statistical information stored in the data dictionary that helps the optimizer to generate the best plan for the query. Postgres, MSSQL, MySQL etc. This is an indirect way of executing an SQL query. But at times an Interviewer may trick you and asks this question randomly: “ How will you reverse a string without using REVERSE() function? No loop, should be a single query. Here we are sharing a comprehensive list of 250 SQL Server Interview Questions. Second level is the physical storage made up of data files. It is a compilation of advanced SQL interview questions after attending dozens of technical interviews in top-notch companies like- Oracle, Google, Ebay, Amazon etc. 6 common SQL Query Questions. Download Complete Oracle Interview Questions PDF. If the answers are same for all databases, only one query is specified. For SQL queries returning a single row, PL/SQL declares all implicit cursors. The data type of this column in VARCHAR2(1). Oracle Scenarios guideline for job interview preparation. Most commonly asked 25 oracle plsql interview questions. Wipro PLSQL Interview Questions. We've also given SQL scripts to create the test data. That's why we've selected a set of 50 SQL queries that you can use to step up your learning. Date / Time related queries 1. Oracle E-Business Suite R12. This blog post on Oracle 11g PL/SQL Practice Questions for Interview will help entry level Database programmers to answer most common Oracle 11g PL/SQL Questions. com TOP TWENTY PL/SQL TIPS AND TECHNIQUES STEVEN FEUERSTEIN PL/SQL has come a long way since its rather simplistic beginnings as a batch-processing language for SQL*Plus scripts in the Oracle Version 6 database. With linked servers and distributed queries, you can query all sorts of data sources and merge them on the fly with your SQL Server database. SQL Queries in Oracle, Select FIRST_NAME, to_char SQL Queries Interview Questions and Answers on "SQL Mathematical Operations using Group By" - Examples. Comprehensive, community-driven list of essential SQL interview questions. The content of this questions includes the topics on Schema, Data File, Overloading, Oracle Instance, Tablespace, DML, Oracle programming, Operators, Query Types, Oracle SQL functions, Oracle Data Types, and many more. If you found any information incorrect or missing in above list then please mention it by commenting below. SQL works with database programs like MS Access, DB2, Informix, MS SQL Server, Oracle, Sybase. I am writing some queries which were asked of me during my interview -- the questions asked in each interview are different but I understand they are related to each other. It receives the queries from UI and fetches on JDBC interfaces to process the query. For Oracle HRMS and Payroll interview questions visit HRMS Interview Questions For Oracle iProcurement interview questions, kindly visit iProc Interview Questions. 12,13,14,15,16,19,20. Just for fun, I have history files going back 10 yrs. Test execution: If a SQL profile is recommended, the database tests the new SQL profile by executing the SQL statement both with and without the SQL profile. Oracle SQL Oracle Apps Technical Question Answers. Moreover, to practice this questions use Oracle Database 11g with Sample Schemes which consists of tables like EMPLOYEES, DEPARTMENT,JOB_GRADES etc. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: