https://mlotfic.github.io/A minimal, responsive and feature-rich Jekyll theme for technical writing. 2026-04-23T10:22:53+02:00 Mahmoud Lotfi https://mlotfic.github.io/ Jekyll © 2026 Mahmoud Lotfi /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-04-23T04:00:00+02:00 2026-04-23T10:22:27+02:00 https://mlotfic.github.io/posts/sql-dialects-complete-guide/ Mahmoud Lotfi

A calm, honest guide to all SQL "flavors" — what they are, who uses them, when they matter, and why they're not as scary as they sound. Covers T-SQL, PL/SQL, PL/pgSQL, MySQL, SQLite, PostgreSQL, SQL Server, Oracle, MS Access, ANSI SQL, SQL Functions, SQL Syntax, SQL Features, SQL Comparison, SQL Learning, SQL Cheatsheet, SQL Reference, SQL Tutorial, SQL Guide, SQL Best Practices, SQL Common Mistakes, SQL Pros and Cons, SQL When It Matters, SQL How to Learn, SQL 80% Never Changes, SQL Dialects Complete Guide, SQL Dialects T-SQL, SQL Dialects PL/SQL, SQL Dialects PL/pgSQL, SQL Dialects MySQL, SQL Dialects SQLite, SQL Dialects PostgreSQL, SQL Dialects SQL Server, SQL Dialects Oracle, SQL Dialects MS Access, SQL Dialects ANSI SQL, SQL Dialects SQL Functions, SQL Dialects SQL Syntax, SQL Dialects SQL Features, SQL Dialects SQL Comparison, SQL Dialects SQL Learning, SQL Dialects SQL Cheatsheet, SQL Dialects SQL Reference, SQL Dialects SQL Tutorial, SQL Dialects SQL Guide, SQL Dialects SQL Best Practices, SQL Dialects SQL Common Mistakes, SQL Dialects SQL Pros and Cons, SQL Dialects SQL When It Matters, SQL Dialects SQL How to Learn, SQL Dialects SQL 80% Never Changes, SQL Dialects Complete Guide with Examples, SQL Dialects Complete Guide with Examples Based on Lucky Shrub Gardening Center Use Cases

2026-04-23T04:00:00+02:00 2026-04-23T10:22:27+02:00 https://mlotfic.github.io/posts/mysql-variables-parameters-study-notes/ Mahmoud Lotfi

A comprehensive guide to MySQL variables and parameters in stored procedures, covering SET, DECLARE, SELECT INTO, IN, OUT, and INOUT parameters with examples based on Lucky Shrub Gardening Center use cases.

2026-04-22T04:00:00+02:00 2026-04-23T09:54:09+02:00 https://mlotfic.github.io/posts/sql-spatial-analysis-functions-cheatsheet-1/ Mahmoud Lotfi

A comprehensive cheatsheet covering all SQL spatial analysis functions, including Spatial Data Types, Geometry Constructors, Input / Output (WKT & WKB), Geometry Properties, Measurement Functions, Spatial Relationship Functions, Spatial Set Operations, Coordinate & Projection, GeoJSON & Geohash, Spatial Indexes, Window & Aggregate Spatial Functions, Cross-Engine Master Table, and Common Patterns & Examples. Includes inline and table-level syntax, add/drop/modify examples, cross-engine compatibility.

2026-04-22T04:00:00+02:00 2026-04-23T10:02:28+02:00 https://mlotfic.github.io/posts/sql-constraints-cheatsheet/ Mahmoud Lotfi

A comprehensive cheatsheet covering all SQL constraint types, including PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, CHECK, DEFAULT, AUTO_INCREMENT, and more. Includes inline and table-level syntax, add/drop/modify examples, cross-engine compatibility, naming best practices, and common patterns.

2026-04-22T04:00:00+02:00 2026-04-23T09:54:09+02:00 https://mlotfic.github.io/posts/sql-functions-cheatsheet/ Mahmoud Lotfi

A comprehensive cheatsheet covering all SQL functions, including Aggregate, String, Math, Date & Time, Comparison & Logical, Window Functions, Type Conversion, Security & Hashing, JSON, NULL Handling, and Common Patterns. Includes inline and table-level syntax, add/drop/modify examples, cross-engine compatibility.