yezhizi opened a new pull request, #3164:
URL: https://github.com/apache/kvrocks/pull/3164
Add a new CF for label-based indexing. The key format is as following:
```
+-----------+--------------+----------------+------------+------------------+--------------+---------+
| ns | index_type | label_key_size | label_key | label_value_size
| label_value | key | => null
| (1+Xbytes)| (1byte) | (4byte) | (Ybyte) | (4byte)
| (Zbyte) | (Kbyte) |
+-----------+--------------+----------------+------------+------------------+--------------+---------+
```
| enum | index_type |
| ---- | ---------- |
| 0 | `TS_LABEL` |
Now we can do:
```
127.0.0.1:6666> TS.CREATE temp:TLV LABELS type temp location TLV
127.0.0.1:6666> TS.CREATE temp:JLM LABELS type temp location JLM
127.0.0.1:6666> TS.MADD temp:TLV 1000 30 temp:TLV 1010 35 temp:TLV 1020 9999
temp:TLV 1030 40
127.0.0.1:6666> TS.MADD temp:JLM 1005 30 temp:JLM 1015 35 temp:JLM 1025 9999
temp:JLM 1035 40
127.0.0.1:6666> TS.MGET WITHLABELS FILTER type=temp
1) 1) "temp:JLM"
2) 1) 1) "location"
2) "JLM"
2) 1) "type"
2) "temp"
3) 1) 1) (integer) 1035
2) (double) 40
2) 1) "temp:TLV"
2) 1) 1) "location"
2) "TLV"
2) 1) "type"
2) "temp"
3) 1) 1) (integer) 1030
2) (double) 40
127.0.0.1:6666> TS.MGET SELECTED_LABELS location FILTER type=temp
1) 1) "temp:JLM"
2) 1) 1) "location"
2) "JLM"
3) 1) 1) (integer) 1035
2) (double) 40
2) 1) "temp:TLV"
2) 1) 1) "location"
2) "TLV"
3) 1) 1) (integer) 1030
2) (double) 40
```
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