Database Views and Indexes: Structure, Usage, and Optimization

Views A view is a virtual table derived from the result set of a query on one or more base tables. It contains no data of its own—only the definition of the query used to generate it, which is stored in the data dictionary. Once created, a view can be queried like a regular table. Purpose and Benefits Views simplify complex queries by encapsula ...

Posted on Sat, 12 Sep 2026 16:02:09 +0000 by Agtronic

Deadlock in High-Concurrency Scenario: Missing Index on Lookup Column

A stored procedure designed to generate sequential identifiers encountered deadlocks under concurrent load. CREATE PROCEDURE [dbo].[GetNextSequence] @sequenceKey varchar(50), @result int OUTPUT AS BEGIN BEGIN TRY BEGIN TRANSACTION SELECT @result = CurrentVal FROM sequence_table WITH (XLOCK, ROWLOCK) ...

Posted on Thu, 06 Aug 2026 16:29:09 +0000 by Kyrst

Advanced MySQL Operations: Auto-Increment, Indexes, Foreign Keys, and Data Manipulation

Auto-Increment Configuration The default behavior for auto-increment columns starts at 1 and increments by 1. However, specific scenarios may require customizing the starting point or the increment step. Setting the Initial Value ALTER TABLE records AUTO_INCREMENT = 100; Adjusting the Increment Step Session Scope: Affects only the current con ...

Posted on Mon, 03 Aug 2026 16:51:50 +0000 by fandelem