SQL Mastery: 100 Strategies for Data Selection with SELECT

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Data selection in SQL refers to the process of retrieving specific data from a database using the SELECT statement. The SELECT statement is one of the fundamental SQL commands and is used to query data from one or more tables.

Here’s a breakdown of the key components:

• SELECT clause: Specifies the columns that you want to retrieve. You can use * to select all columns or list specific column names.
• FROM clause: Specifies the table or tables from which to retrieve the data. You can query data from a single table or join multiple tables.
• WHERE clause (optional): Filters the rows based on a specified condition. If omitted, all rows from the specified table(s) are returned.

1. Basic SELECT:

• Retrieves all columns and rows from a specified table.

SELECT * FROM table_name;

2. SELECT with WHERE clause:

• Filters rows based on a specified condition.

SELECT * FROM table_name WHERE column_name = value;

3. SELECT with ORDER BY:

• Sorts the result set by a specified column.

SELECT * FROM table_name ORDER BY…