amirhmd commented on issue #34224:
URL:
https://github.com/apache/shardingsphere/issues/34224#issuecomment-2592867749
@RaigorJiang the fix could be broader than below code:
```
public ShardingSphereDatabase getUsedDatabase() {
ShardingSpherePreconditions.checkNotEmpty(usedDatabaseNames,
NoDatabaseSelectedException::new); // this line
ShardingSpherePreconditions.checkState(usedDatabaseNames.size()
<= 1,
() -> new
UnsupportedSQLOperationException(String.format("Can not support multiple logic
databases [%s]", Joiner.on(", ").join(usedDatabaseNames))));
String databaseName = usedDatabaseNames.iterator().next();
ShardingSpherePreconditions.checkState(metaData.containsDatabase(databaseName),
() -> new UnknownDatabaseException(databaseName));
return metaData.getDatabase(databaseName);
}
```
or it should be handle earlier like `ConnectionSession`?
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