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Indexes in SQL: A Comprehensive Tutorial Introduction: Indexes are a crucial performance-tuning method in SQL databases. They enable faster data retrieval, improving query efficiency. In this tutorial, we'll delve into the world of indexes, exploring what they are, types, benefits, and how to ...
T-SQL is SQL Server’s procedural programming language. Learn More: T-SQL Tutorial and Stored Procedures A Beginner’s Guide to Cursors Stored Procedures MySQL Stored Procedures Stored procedures can be created in MySQL using their procedural language. Learn More: A Beginner’s Guide to Cursors S...
SQL - IN Operator SQL - ANY, ALL Operators SQL - EXISTS Operator SQL - CASE SQL - NOT Operator SQL - NOT EQUAL SQL - IS NULL SQL - IS NOT NULL SQL - NOT NULL SQL - BETWEEN Operator SQL - UNION Operator SQL - UNION vs UNION ALL ...
Javatpoint Mumbai mysql performance_schema Phpadmin Registration Student student_1 Testdb WordPress World Example 3:Write a query to remove the database with the IF EXISTS parameter. DROP DATABASE IF EXISTS Employee; In the above DROP DATABASE query example, we dropped the database with the IF...
SAVEPOINT:It lets you set a point inside a transaction to which you can roll back if needed. BEGIN; -- SQL statements SAVEPOINT my_savepoint; -- More SQL statements ROLLBACK TO my_savepoint; This example creates a savepoint and later rolls back to that point, undoing some of the transact...