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 &...
A query, in SQL, is a command used to request data or update information from a database table or combination of tables. Users can write and execute queries to retrieve, delete or update information in a database. Usually, a query response returns data from different tables within the data...
1. Make a note of all node names (and/or IP addresses), SQL Server virtual names along with preferred nodes. If there are more than three nodes you may need to also take note of possible owners for each SQL resource group. For my example assume that I have a cluster with node1 and...
Sub-queries are often referred to as sub-selects, as they allow a SELECT statement to be executed arbitrarily within the body of another SQL statement. A sub-query is executed by enclosing it in a set of parentheses. Sub-queries are generally used to return a single row as an atomic val...
It is the collection of schemes, tables, queries, reports, views and other objects.Syntax: CREATEDATABASEDatabaseNameExample: CREATEDATABASE Studentor you can Create Database through Design/ Wizard form by right clicking on DATABASE option-New Database....
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they are just used to speed up queries. Effective indexes are one of the best ways to improve performance in a database application. A table scan happens when there is no index available to help a query. In a table scan SQL Server examines every row in the table to satisfy the query ...
3 to_char(sysdate,'sssss') "Seconds" 4 from dual; SystemTime Seconds --- --- 11:34:50 41750 Video for Complex sql queries : Register for free and Get Complex SQL Interview Questions PDF : Submit FOR ISSUES CONTACT : compexsql@gmail.com...
This comprehensive guide provides a curated list of SQL Server interview questions and answers, covering topics from basic concepts to advanced techniques, to help you prepare for your next data-related interview.
means. The SQL queries which are used the advanced functionalities to add business logic in the program or to retrieve the specific business related data are called as advanced SQL queries.You can able to learn thecomplex SQL queries,Complex SQL interview questionsand many more things in the ...