yaooqinn commented on pull request #29834:
URL: https://github.com/apache/spark/pull/29834#issuecomment-696657847
> Does the `SHOW DATABASES` command list the "glob_temp" db？ I'm fine if
they are consistent.
No. BUT they are not the same thing.
```java
if ((pattern == null) || pattern.isEmpty()) {
return convertPattern("%", true);
}
```
```java
if (pattern == null) {
return ".*";
}
```
the two Hive APIs we call here to convert "" or null to wildcards are
different.
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