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