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SELECT, FROM and WHERE are mandatory for any SELECT statement in SQL.

Question

SELECT, FROM and WHERE are mandatory for any SELECT statement in SQL.

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Solution

Actually, that's not entirely correct. In SQL, only the SELECT and FROM clauses are mandatory in a SELECT statement. The WHERE clause is optional and is used to filter records.

Here's a step-by-step breakdown of each clause:

  1. SELECT: This is used to specify the data we want to get from the database. You can select one or more columns from the table. If you want to select all columns, you can use "*".

    Example: SELECT column1, column2 FROM table_name;

  2. FROM: This is used to specify the table from which we want to retrieve data.

    Example: SELECT * FROM table_name;

  3. WHERE: This is optional and is used to filter records. It only includes the records where the condition is TRUE.

    Example: SELECT * FROM table_name WHERE condition;

So, a complete SQL SELECT statement could look like this:

SELECT column1, column2 FROM table_name WHERE condition;

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