កម្មវិធីបង្រៀន SQL Programming ជាភាសាខ្មែរ Online SQL Training Course

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កម្មវិធីបង្រៀន SQL Programming ជាភាសាខ្មែរ Online SQL Training Course
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កម្មវិធីបង្រៀន SQL Programming ជាភាសាខ្មែរ Online SQL Training Course
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កម្មវិធីបង្រៀន SQL Programming ជាភាសាខ្មែរ Online SQL Training Course

ជំពូកទី ២ Basic SQL មេរៀនទី ១៖ មេរៀនទី ២៖ មេរៀនទី ៣៖ ការប្រើប្រាស់ SELECT Statement ការប្រើប្រាស់ WHERE Clause ការប្រើប្រាស់ ORDER BY Keyword

មេរៀនទី ១៖ ការប្រើប្រាស់ SELECT Statement ១.១ ១.២ ១.៣ SELECT Statement ​DISTINCT Keyword Syntax

១.១ SELECT Statement SELECT Statement ប្រើសំរាប់បង្ហាញ Data ដែលមាននៅក្នុង Database. វាតែងតែភ្ជាប់មកជាមួយនឹង Keyword FROM ជានិច្ច ប្រើ SELECT * ដើម្បីបង្ហាញគ្រប់ Field ទាំងអស់នៅក្នុង Table

១.២ DISTINCT DISTINCT Keyword ប្រើសំរាប់បង្ហាញតំលៃដែលមិនស្ទួននៅក្នុង Table គេតែងតែសរសេរវាបន្ទាប់ពី SELECT Keyword និងនៅពីមុខ column ដែល យើងចង់បង្ហាញតំលៃដែលមិនស្ទួន Example SELECT DISTINCT column_name FROM table;

១.៣ SELECT Syntax SELECT expressions FROM tables; SELECT DISTINCT column_name FROM table;

សមាជិក ចា​ ស៊ីឡា អ៊ុង វណ្ណារ៉ា ហ៊ី​ ឡេងសែ ឡាំ អរុណ cha syla1991@gmail.com ungvannara@gmail.com hylengse.it@gmail.com arunlam2891@gmail.com