If you've got an SQL interview coming up, you'll almost certainly be asked about JOIN clauses. Make sure you're prepared by practicing these 5 tough questions on JOINs in advance.
SQL Job Interview Questions and Answers 1 :: What is SQL (Structured Query Language)? SQL is an English like language consisting of commands to store, retrieve, maintain & regulate access to your database.Read More 2 :: What is the SQL*Plus? SQL*Plus is an application that recognizes &...
SQL INTERVIEW QUESTIONS AND ANSWERS 6 | P a g e CourseID EnrollNo 1 1000 2 1000 3 1000 1 1002 2 1003 Following is join query that shows names of students enrolled in different courseIDs. SELECT StudentCourse.CourseID, Student.StudentName FROM StudentCourse INNER JOIN Customers ON StudentCou...
SQL is a common language for Structured Query Language, which is based on general English, whereas MySQL is a database management system. Structured Query Language is the main part of the relational database, which can be utilized for gaining access to the database and also plays a major rol...
SQL - Interview QuestionsSQL - JOINThe SQL JOIN clause is used to combine rows of two or more tables based on common column between them. There are four types of JOINs in SQL: INNER JOIN: It is sometimes called simple JOIN. It returns records based on matching rows in both tables. LEFT...
on both tables must be equal. Frequently, this type of join involves primary and foreign key complements. Note: Equijoins are also called simple joins or inner joins. Non-Equijoins A non-equijoin is a join condition containing something other than an equality operator. ...
5. What is XACT_ABORT ON? 6. Can we use two CTE’s in a single select query? 7. What are the different join operators in SQL Server? 8. Can we use a table variable inside a nested stored procedure if the table variable created in parent stored procedure?
SQL Interview Questions with Answers This guide lists out a few of the most asked SQL interview questions and gives their answers such as JOINS, KEYWORDS, TRIGGERS and much more.
The FULL OUTER JOIN combines results from both left and right outer joins. It returns all records from both tables, filling in NULL where no matches exist. The query below returns all records for the employees and departments table, even with unmatched rows. -- Combine all employees and depar...
A database cursor can be thought of as apointer to a specific row within a query result. The pointer can be moved from one row to the next. Depending on the type of cursor, you may even be able to move it to the previous row. ...