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doc: correct join error

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gccgdb1234 2024-08-09 15:49:54 +08:00
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docs/zh/14-reference/03-taos-sql/30-join.md
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@ -202,7 +202,7 @@ SELECT ... FROM table_name1 LEFT|RIGHT ASOF JOIN table_name2 [ON ...] [JLIMIT jl
表 d1001 电压值大于 220V 且表 d1002 中同一时刻或稍早前最后时刻出现电压大于 220V 的时间及各自的电压值： 表 d1001 电压值大于 220V 且表 d1002 中同一时刻或稍早前最后时刻出现电压大于 220V 的时间及各自的电压值：
```sql ```sql
SELECT a.ts, a.voltage, a.ts, b.voltage FROM d1001 a LEFT ASOF JOIN d1002 b ON a.ts >= b.ts where a.voltage > 220 and b.voltage > 220 SELECT a.ts, a.voltage, b.ts, b.voltage FROM d1001 a LEFT ASOF JOIN d1002 b ON a.ts >= b.ts where a.voltage > 220 and b.voltage > 220
``` ```
### Left/Right Window Join ### Left/Right Window Join