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اكتشف أكثر من 170 مقالاً احترافياً في PHP وLaravel وMySQL وأمن التطبيقات وتطوير أنظمة إدارة الأعمال وقواعد البيانات.
MySQL CAST and CONVERT Explained: Complete Guide (2026)
Learn how MySQL CAST and CONVERT work through practical examples, data type conversions, formatting techniques, performance tips, and SQL best practices.
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MySQL Date and Time Functions Explained: Complete Guide (2026)
Learn MySQL date and time functions including NOW, CURDATE, DATE_ADD, DATEDIFF, TIMESTAMPDIFF, DATE_FORMAT, optimization techniques, and practical SQL examples.
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MySQL String Functions Explained: Complete Guide (2026)
Learn MySQL string functions through practical examples including CONCAT, LENGTH, SUBSTRING, REPLACE, TRIM, LOWER, UPPER, performance tips, and best practices.
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MySQL Aggregate Functions Explained: Complete Guide (2026)
Learn MySQL aggregate functions including COUNT, SUM, AVG, MIN, MAX, GROUP BY, HAVING, performance optimization, and real-world SQL examples.
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MySQL CASE Expression Explained: Complete Guide (2026)
Learn how the MySQL CASE expression works through practical examples, conditional logic, sorting, filtering, performance tips, and real-world SQL use cases.
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MySQL EXISTS and NOT EXISTS Explained: Complete Guide (2026)
Learn how MySQL EXISTS and NOT EXISTS work through practical examples, correlated subqueries, performance comparisons, optimization techniques, and best practices.
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