Update 06-stream.md
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@ -52,7 +52,7 @@ CREATE TABLE d1004 USING meters TAGS ("California.LosAngeles", 3);
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### 创建流
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```sql
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create stream current_stream into current_stream_output_stb as select _wstart as start, _wend as wend, max(current) as max_current from meters where voltage <= 220 interval (5s);
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create stream current_stream trigger at_once into current_stream_output_stb as select _wstart as wstart, _wend as wend, max(current) as max_current from meters where voltage <= 220 interval (5s);
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```
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### 写入数据
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@ -70,8 +70,8 @@ insert into d1004 values("2018-10-03 14:38:06.500", 11.50000, 221, 0.35000);
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### 查询以观察结果
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```sql
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taos> select start, wend, max_current from current_stream_output_stb;
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start | wend | max_current |
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taos> select wstart, wend, max_current from current_stream_output_stb;
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wstart | wend | max_current |
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===========================================================================
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2018-10-03 14:38:05.000 | 2018-10-03 14:38:10.000 | 10.30000 |
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2018-10-03 14:38:15.000 | 2018-10-03 14:38:20.000 | 12.60000 |
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@ -89,7 +89,7 @@ Query OK, 2 rows in database (0.018762s)
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### 创建流
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```sql
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create stream power_stream into power_stream_output_stb as select ts, concat_ws(".", location, tbname) as meter_location, current*voltage*cos(phase) as active_power, current*voltage*sin(phase) as reactive_power from meters partition by tbname;
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create stream power_stream trigger at_once into power_stream_output_stb as select ts, concat_ws(".", location, tbname) as meter_location, current*voltage*cos(phase) as active_power, current*voltage*sin(phase) as reactive_power from meters partition by tbname;
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```
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### 写入数据
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