I have created an index, but explain sql does not use the index. I have ensured that GridDB has up-to-date statistics by running the available commands and index on (DeviceId, Property) is in the correct order.
griddb 5.1.0
gs[public]> explain analyze select * from properties_test where deviceId='101' and property='0' limit 0,10;
The query had been executed. (60,662 ms)
gs[public]> getplantxt
Id Type Input Rows Lead time Actual time Node And more..
---------------------------------------------------------------------------------------------------
0 SCAN - - 60597 48739 192.168.1.62:10001 table: {properties_test} LIMIT: 10
1 RESULT 0 10 0 0 192.168.1.62:20001
gs[public]> showcontainer properties_test
Database : public
Name : properties_test
Type : COLLECTION
Partition ID: 13
DataAffinity: -
Columns:
No Name Type CSTR RowKey
0 Type STRING
1 DeviceId STRING
2 Property STRING
3 Id STRING
4 NumberValue DOUBLE
5 Value STRING
6 CreateTime TIMESTAMP
7 Timestamp TIMESTAMP
Indexes:
Name :
Type : TREE
Columns:
No Name
0 Property
Name :
Type : TREE
Columns:
No Name
0 DeviceId
Name :
Type : TREE
Columns:
No Name
0 Timestamp
Name :
Type : TREE
Columns:
No Name
0 DeviceId
1 Property
