33 lines
987 B
Python
33 lines
987 B
Python
import taos
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conn = taos.connect()
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cursor = conn.cursor()
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cursor.execute("DROP DATABASE IF EXISTS test")
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cursor.execute("CREATE DATABASE test keep 36500")
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cursor.execute("USE test")
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cursor.execute("CREATE STABLE weather(ts TIMESTAMP, temperature FLOAT) TAGS (location INT)")
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for i in range(1000):
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location = str(i % 10)
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tb = "t" + location
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cursor.execute(f"INSERT INTO {tb} USING weather TAGS({location}) VALUES (now+{i}a, 23.5) (now+{i + 1}a, 23.5)")
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cursor.execute("SELECT count(*) FROM weather")
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data = cursor.fetchall()
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print("count:", data[0][0])
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cursor.execute("SELECT tbname, * FROM weather LIMIT 2")
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col_names = [meta[0] for meta in cursor.description]
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print(col_names)
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rows = cursor.fetchall()
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print(rows)
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cursor.close()
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conn.close()
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# output:
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# count: 2000
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# ['tbname', 'ts', 'temperature', 'location']
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# row_count: -1
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# [('t0', datetime.datetime(2022, 4, 27, 14, 54, 24, 392000), 23.5, 0), ('t0', datetime.datetime(2022, 4, 27, 14, 54, 24, 393000), 23.5, 0)]
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