20 lines
685 B
Python
20 lines
685 B
Python
import pandas
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from sqlalchemy import create_engine
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engine = create_engine("taos://root:taosdata@localhost:6030/power")
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df = pandas.read_sql("SELECT * FROM meters", engine)
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# print index
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print(df.index)
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# print data type of element in ts column
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print(type(df.ts[0]))
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print(df.head(3))
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# output:
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# RangeIndex(start=0, stop=8, step=1)
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# <class 'pandas._libs.tslibs.timestamps.Timestamp'>
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# ts current ... location groupid
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# 0 2018-10-03 14:38:05.500 11.8 ... california.losangeles 2
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# 1 2018-10-03 14:38:16.600 13.4 ... california.losangeles 2
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# 2 2018-10-03 14:38:05.000 10.8 ... california.losangeles 3
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