SQL SELECT Statement: Complete Guide
The SQL SELECT statement is the cornerstone of querying. It retrieves data from tables and views ÔÇö with precision, filtering, sorting, and aggregation. Master SELECT and you master SQL.
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SQL Tutorial:-
Syntax
-- Specific columns
SELECT col1, col2 FROM table_name;
-- All columns
SELECT * FROM table_name;Basic SELECT
SELECT * FROM Student_Records;
SELECT Student_Id, Age, Percentage FROM Student_Records;SELECT with WHERE
SELECT * FROM Employee_Details WHERE Emp_Penalty = 500;GROUP BY for Aggregation
SELECT COUNT(Car_Name), Car_Price
FROM Cars_Details
GROUP BY Car_Price;HAVING for Filtering Groups
SELECT SUM(Car_Price), Car_Name
FROM Cars_Details
GROUP BY Car_Name
HAVING SUM(Car_Price) > 1000000;ORDER BY for Sorting
SELECT * FROM Employee_Order ORDER BY Salary DESC;SELECT Logical Execution Order
Knowing the order helps you write valid SELECTs:
- 1. FROM (and JOIN)
- 2. WHERE
- 3. GROUP BY
- 4. HAVING
- 5. SELECT
- 6. ORDER BY
- 7. LIMIT / OFFSET
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Conclusion
SELECT is everywhere in SQL. Combine WHERE, GROUP BY, HAVING, and ORDER BY to extract exactly the data you need. For more SQL tutorials, stay tuned to .
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