fix show devices

[yanhongwangg]

before，when i create a timeseries with three nodes an then execute show devices

after，same operation

[sonarqubecloud]

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[HTHou]

Good job, Yanhong!
Consider add an UT or IT?

[yanhongwangg]

Good job, Yanhong!
Consider add an UT or IT?

OK, I'll add it

[jixuan1989]

ping

[jt2594838]

How this may affect data queries need to be further investigated. For example, if this change results in root.group1.* being replaced by root.group1 in a data query, the result will be very different.
I suggest a modification in show devices rather than here.

[yanhongwangg]

How this may affect data queries need to be further investigated. For example, if this change results in root.group1.* being replaced by root.group1 in a data query, the result will be very different.
I suggest a modification in show devices rather than here.

Thanks for your advice,but this bug occurs before getting devices according to the path, so there is no way to change it when getting devices，meanwhile, I looked at it and "*" is not used.

[jt2594838]

I do not think you get my point. I was saying adding .* to the paths is not necessarily a bug, as it may be needed in data queries. You should either convince me by showing that this change does not affect related data queries or allow show device and other queries to ignore the last .*.

[jt2594838]

For example, assuming we have 3 SGs: root.sg1, root.sg2, and root.sg3.
And now we execute SELECT * FROM root, the removed code will convert this SQL into "SELECT root.sg1., root.sg2., root.sg3.*", while after the removal, the result may be "SELECT root.sg1, root.sg2, root.s3", which is apparently a different one.

[yanhongwangg]

I do not think you get my point. I was saying adding .* to the paths is not necessarily a bug, as it may be needed in data queries. You should either convince me by showing that this change does not affect related data queries or allow show device and other queries to ignore the last .*.

Maybe i can fix it in show devices by ignoring the last .., but there is another question
before ignoring the last .., when i execute show devices root.a.b.* ,the result is root.a.b.c,
after ignoring the last .*., execute the same sql ,it will match root.a.b and root.a.b.c,
result is inconsistent.