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Edit
length
description
Syntax
INT length(VARCHAR str)This function returns the length of a string (in bytes).
example
MySQL > select length("abc");
+---------------+
| length('abc') |
+---------------+
| 3 |
+---------------+
MySQL > select length("中国");
+------------------+
| length('中国') |
+------------------+
| 6 |
+------------------+keyword
LENGTH