What is the difference between char and varchar data types in MySQL?
- The char and varchar types are similar, but they are stored and retrieved differently. Their maximum length and whether trailing spaces are preserved are also different. No case conversion is performed during storage or retrieval.
- Char type query efficiency is relatively high, varchar type is relatively space-saving
For example, the following figure describes
The following table shows the results of storing various string values in CHAR(4) and VARCHAR(4) columns, illustrating the difference between CHAR and VARCHAR
