fix grammer
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@ -183,7 +183,7 @@ select _rowts, max(current) from meters;
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**\_IROWTS**
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**\_IROWTS**
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The \_IROWTS pseudocolumns can only be used with INTERP FUNCTION. This pseudocolumns can be used to retrieve the corresponding timestamp column associated with the INTERPOLATION results.
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The \_IROWTS pseudocolumn can only be used with INTERP function. This pseudocolumn can be used to retrieve the corresponding timestamp column associated with the interpolation results.
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```sql
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```sql
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select _irowts, interp(current) from meters range('2020-01-01 10:00:00', '2020-01-01 10:30:00') every(1s) fill(linear);
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select _irowts, interp(current) from meters range('2020-01-01 10:00:00', '2020-01-01 10:30:00') every(1s) fill(linear);
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