HTHou commented on issue #2722:
URL: https://github.com/apache/iotdb/issues/2722#issuecomment-784732599
@ope-nz Well... You're right. Version 0.11 doesn't even use the ID_MATCHER,
so it is only affected by antlr. If you would like to use backslash, you can
just modify the part in SqlBase.g4 like this.
```
fragment
NAME_CHAR
: 'A'..'Z'
| 'a'..'z'
| '0'..'9'
| '_'
| '-'
| ':'
| '/'
| '\\'
| '@'
| '#'
| '$'
| '%'
| '&'
| '+'
| CN_CHAR
;
fragment
FIRST_NAME_CHAR
: 'A'..'Z'
| 'a'..'z'
| '0'..'9'
| '_'
| '/'
| '\\'
| '@'
| '#'
| '$'
| '%'
| '&'
| '+'
| CN_CHAR
;
```
After adding `'\\'`, I tried some statements and they works.
```
IoTDB> create timeseries root.sg.d1."C:\".status with datatype=BOOLEAN
Msg: The statement is executed successfully.
IoTDB> show timeseries
+-----------------------+-----+-------------+--------+--------+-----------+----+----------+
| timeseries|alias|storage
group|dataType|encoding|compression|tags|attributes|
+-----------------------+-----+-------------+--------+--------+-----------+----+----------+
|root.sg.d1."C:\".status| null| root.sg| BOOLEAN| RLE|
SNAPPY|null| null|
| root.sg.d1.C:.status| null| root.sg| BOOLEAN| RLE|
SNAPPY|null| null|
+-----------------------+-----+-------------+--------+--------+-----------+----+----------+
Total line number = 2
It costs 0.167s
IoTDB> create timeseries root.sg.d1.C:\.status with datatype=BOOLEAN
Msg: The statement is executed successfully.
IoTDB> show timeseries
+-----------------------+-----+-------------+--------+--------+-----------+----+----------+
| timeseries|alias|storage
group|dataType|encoding|compression|tags|attributes|
+-----------------------+-----+-------------+--------+--------+-----------+----+----------+
|root.sg.d1."C:\".status| null| root.sg| BOOLEAN| RLE|
SNAPPY|null| null|
| root.sg.d1.C:\.status| null| root.sg| BOOLEAN| RLE|
SNAPPY|null| null|
| root.sg.d1.C:.status| null| root.sg| BOOLEAN| RLE|
SNAPPY|null| null|
+-----------------------+-----+-------------+--------+--------+-----------+----+----------+
Total line number = 3
It costs 0.025s
```
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