Results for "oracle"
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How to use GOTO statement in SQL server
If you want to jump to a specific point in your SQL code, you can use the GOTO statement. The GOTO statement is used to exit a loop or a nested block of co…
What is an Index? Explain its different types in SQL
✅ Index in SQL Server (इंडेक्स इन SQL सर्वर): Index SQL Server में एक database object (डेटाबेस ऑब्जेक्ट) है जो टेबल के डेटा को जल्दी से प्राप्त करने के लिए…
Window Aggregate Functions in SQL
What is window function: Imagine you have a dataset with many rows, and you want to perform some calculations on each row based on a group of rows related …
Implementing Transactions,Error Handling, and Dynamic SQL in SQL
Think of a transaction as a complete package deal. It's like when you buy something from a store. You give them money, and in return, you expect to get the…
ANY and ALL operators used in SQL
The ANY operator: returns a boolean value as a result returns TRUE if any of the sub-query values meet the condition Any means that the condition will be t…
Logical Query Processing Phases in SQL
SQL query processing consists of several logical phases, which describe the order in which SQL statements are evaluated. These phases help in understanding…
SYS and INFORMATION_SCHEMA
sys In Microsoft SQL Server, the sys schema is a special schema that contains system views and stored procedures that provide metadata about the SQL Server…
What is catalog in Spark
In Apache Spark, the catalog refers to the internal management system that keeps track of all the metadata related to tables, databases, functions, and oth…
Database trigger to audit (Transaction logs) all of the DDL changes made to the Database
Create table DatabaseLog: CREATE TABLE [dbo].[DatabaseLog]( [DatabaseLogID] [int] IDENTITY(1,1) NOT NULL, [PostTime] [datetim…
What is a SQL Statement and types of SQL statements
A SQL (Structured Query Language) statement is a query or command used to perform various operations on data stored in a relational database. SQL statement…
What is Functions and Difference between Functions and Stored Procedures in SQL Server
What is a Function in sql : A function is a set of SQL Statements that perform a specific task. Basically, it is a set of SQL statements that accept only i…
What difference between between MySQL and MSSQL
Feature MySQL MSSQL Ownership Oracle Corporation Microsoft Licensing Open-source (GPL) and commercial versions Commercial with free Express Edition Operati…
What is the Replication in MS SQL server
Replication is a way to copy data from one database to another and keep them in sync. This is useful when you want the same data available in multiple plac…
What is Blocking in SQL, How to solve blocking, and Kill Session
What is Blocking in SQL? Blocking occurs in SQL Server when one query or transaction holds a lock on a resource (like a row or table) and prevents other qu…
Data archive in SQL Server
A data archive refers to the process of moving inactive or less frequently used data from an operational system to a storage system , typically in a separa…
Index Rebuilding vs. Reorganization in SQL Server
As a database grows, maintaining optimal performance becomes crucial. One of the key contributors to performance degradation over time is index fragmentati…
Understanding Cursors in +SQL Server: A Complete Guide
When working with databases, most SQL operations are designed to handle large sets of data at once. However, there are cases where you may need to process …
Understanding SQL Query for Identifying and Analyzing Default Values and Constraint in a Database
Default constraints in SQL are used to assign a default value to a column when no value is provided during data insertion. However, managing and auditing t…
SQL Interview Q&A
Here are the questions along with their corresponding answers extracted from the provided context: What is SQL? SQL stands for Structured Query Language. I…
Understanding Locking Hints in SQL Server: NOLOCK, ROWLOCK, and UPDLOCK
What Are Locking Hints? Locking hints are special options you can include in your SQL queries to tell SQL Server how to handle locks on the data being quer…
Understanding Stored Procedures in MSSQL
What is a Stored Procedure? A stored procedure is a group of SQL statements that are compiled and saved in the database. Instead of writing the same SQL qu…
SQL Server Optimization Q&A
1. What is SQL Server Optimization? Answer: SQL Server Optimization ka matlab hota hai database ka performance better banana — jaise queries fast chalna, k…