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This article mainly explains the use of single quotation marks in MySQL concat. The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn the usage of single quotation marks in MySQL concat.

When spelling strings through concat, if you need to use single quotation marks in the statement, you can use two single quotation marks instead of one.

Mysql > select concat ('drop user','@', @ @ hostname,')

+-- +

| | concat ('drop user' @',', @ @ hostname,') |

+-- +

| | drop user'@ 'bei-f0q5bc2.gemalto.com' |

+-- +

1 row in set (0.00 sec)

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