云数据库 GAUSSDB NOSQL-支持的命令列表:元数据管理
元数据管理
命令名称 |
读写模式下是否支持该命令 |
只读模式下是否支持该命令 |
---|---|---|
create database |
√ |
√ |
show databases |
√ |
√ |
drop database |
√ |
√ |
show measurements |
√ |
√ |
show measurement cardinality |
√ |
√ |
show measurement exact cardinality |
√ |
√ |
drop measurement |
√ |
√ |
create retention policy |
√ |
√ |
alter retention policy |
√ |
√ |
drop retention policy |
√ |
√ |
show retention policies |
√ |
√ |
create continuous query |
√ |
√ |
show continuous queries |
√ |
√ |
drop continuous query |
√ |
√ |
show series |
√ |
√ |
show series cardinality |
√ |
√ |
show series exact cardinality |
√ |
√ |
drop series |
√ |
√ |
show tag keys |
√ |
√ |
show tag key cardinality |
√ |
√ |
show tag key exact cardinality |
√ |
√ |
show tag values |
√ |
√ |
show tag values cardinality |
√ |
√ |
show tag values exact cardinality |
√ |
√ |
show field keys |
√ |
√ |
show field key cardinality |
√ |
√ |
show field key exact cardinality |
√ |
√ |
show shards |
√ |
√ |
show shard groups |
√ |
√ |
drop shard |
√ |
√ |
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