MINUS - returns all distinct rows selected by the first query but not by the second. UNION - returns all distinct rows selected by either query UNION ALL - returns all rows selected by either query, including all duplicates. Q. What is ROWID ?
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 &...
and the outer query is known as the main query in the Database. The implementation of subqueries is always done first, and the outcome of the following is always passed on to the main query.
That was necessary for the first query to work, but now picking the top 1 from that list will give you the highest salary not the the 10th highest salary. Therefore, the second query reorders the 10 records in ascending order (which the default sort order) and then selects the top ...
SQL: It is referred as Structured Query Language.• Only simple IF / Else statements.• Through SQL you can interact with database through ADO.NET• In SQL you can execute a line of code• It can run only on windowsPL/SQL: It is referred as Procedure Language / Structure Query ...
These are just basic questions and you can check the data analyst interview questions here. CLICK HERE TO GET INTERVIEW QUESTIONS FOR TCS… Following are some important Interview Questions for SQL : 1.What is SQL?Where SQL is used? Answer: SQL is Structured Query Language, which is a ...
4. How to find the query running on a given SPID? 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...
Performance Tuning: Techniques for optimizing SQL Server performance using execution plans, indexing strategies, and query optimization. Book Features: SQL Server Interview Questions and Answers Comprehensive Coverage: From SQL Server basics to advanced topics like database tuning, replication, and high ava...
SQL, pronounced as “S-Q-L” or “sequel,” stands for Structured Query Language. It is a domain-specific language (DSL), a computer language specialized to a particular application domain, such as HTML for web pages. DSL is in contrast to a general-purpose language (GPL), which is bro...
SQL stands for structured query language. It uses commands such as "select", "insert", "update", "delete". Some common relational database management systems that use SQL are: Oracle, MySQL, Microsoft SQL Server, PostgreSQL, etc. Here are 55,825 public repositories matching this topic... ...