SQL Mastery: 100 Strategies for Data Retrieval with SELECT in Different Scenarios

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The SELECT statement in SQL is used to query a database and retrieve data from one or more tables. Here's a comprehensive guide covering various aspects of the SELECT statement and its usage in different situations:

Basic Syntax:

SELECT column1, column2, ...
FROM table_name
WHERE condition
ORDER BY column1 [ASC | DESC];

1. Selecting All Columns from a Table:

SELECT *
FROM table_name;

2. Selecting Specific Columns:

SELECT column1, column2
FROM table_name;

3. Renaming Columns (Alias):

SELECT column1 AS alias1, column2 AS alias2
FROM table_name;

4. Filtering Rows with WHERE Clause:

SELECT column1, column2
FROM table_name
WHERE condition;

5. Sorting Results with ORDER BY:

SELECT column1, column2
FROM table_name
ORDER BY column1 ASC; -- or DESC for descending order

6. Limiting Rows with LIMIT/OFFSET (or FETCH FIRST):