Mysql tìm hiểu về sự khác biệt giữa varchar và char là gì?
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Mysql tìm hiểu về sự khác biệt giữa varchar và char là gì?
Học mysql phải để ý điểm chung của varchar và char chính là hai kiểu dữ liệu trong MySQL được sử dụng để lưu trữ các String. Và sự khác biệt giữa varchar và char chính là dộ dài sử dụng, khi nào nên sử dụng varchar và khi nào char.
Sep 29, 2022
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