zhugw opened a new issue, #20327:
URL: https://github.com/apache/superset/issues/20327
At first column as below
```
`tag_value_name` text COLLATE utf8mb4_bin,
```
then return chart data as below
```
b'\\xe6\\x9c\\xaa\\xe7\\x9f\\xa5'
```
after changing column from text to varchar
```
`tag_value_name` varchar(50) COLLATE utf8mb4_bin DEFAULT NULL,
```
this time the return data is OK
I think `text` and `varchar` both are string, should have the same display
effect.
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