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syntax - What's the difference between "LIKE" and "=" in SQL?

Is there any difference between:

SELECT * FROM users WHERE username="davyjones"

and

SELECT * FROM users WHERE username LIKE "davyjones"
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LIKE allows partial matching / use of wildcards, while = checks for exact matches.

For example

SELECT * FROM test WHERE field LIKE '%oom';

Will return rows where field value is any of the following:

Zoom, Boom, Loom, Groom

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