Explain the usage of the LIKE operator in SQL for pattern matching.

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Aryan Kumar · Answer

Sure. The LIKE operator in SQL is used to match patterns in strings. The LIKE operator takes a pattern as its argument, and returns all rows where the value of the column matches the pattern.

The LIKE operator has the following syntax:

SQL

column_name LIKE pattern;

The pattern can be any string, including literal values, column names, or function calls. The pattern can also contain wildcard characters, which are characters that match any number of characters.

The most common wildcard characters are:

% : Matches zero or more characters.
_ : Matches exactly one character.

Here is an example of how the LIKE operator can be used:

SQL

SELECT customer_name
FROM customers
WHERE customer_name LIKE '%Smith%';

This query will select the customer_name column from the customers table. The LIKE operator will be used to match the pattern %Smith%. This pattern will match any string that contains the word Smith.

Here is another example of how the LIKE operator can be used:

SQL

SELECT product_name
FROM products
WHERE product_name LIKE 'A%C';

This query will select the product_name column from the products table. The LIKE operator will be used to match the pattern A%C. This pattern will match any string that starts with the letter A and ends with the letter C.

The LIKE operator can be used in a variety of ways to match patterns in strings in SQL. It is a powerful tool that can be used to filter data, or to control the flow of a query.

Here are some other examples of how the LIKE operator can be used:

To match customers by their last name.
To match products by their name.
To match orders by their date.
To match employees by their salary.

The LIKE operator is a versatile tool that can be used in a variety of ways to match patterns in strings in SQL.

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Explain the usage of the LIKE operator in SQL for pattern matching.

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