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@ -44,6 +44,7 @@ window_clause: {
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```sql
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CREATE STREAM avg_vol_s INTO avg_vol AS
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SELECT _wstartts, count(*), avg(voltage) FROM meters PARTITION BY tbname INTERVAL(1m) SLIDING(30s);
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```
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## 流式计算的 partition
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@ -52,7 +53,6 @@ SELECT _wstartts, count(*), avg(voltage) FROM meters PARTITION BY tbname INTERVA
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不带 PARTITION BY 选项时,所有的数据将写入到一张子表。
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流式计算创建的超级表有唯一的 tag 列 groupId,每个 partition 会被分配唯一 groupId。与 schemaless 写入一致,我们通过 MD5 计算子表名,并自动创建它。
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```
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## 删除流式计算
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