132 lines
3.5 KiB
Python
132 lines
3.5 KiB
Python
import pyodbc
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# cnxn = pyodbc.connect('DSN={TAOS_DSN};UID={ root };PWD={ taosdata };HOST={ localhost:6030 }', autocommit=True)
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cnxn = pyodbc.connect('DSN={TAOS_DSN}; UID=root;PWD=taosdata; HOST=localhost:6030', autocommit=True)
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cnxn.setdecoding(pyodbc.SQL_CHAR, encoding='utf-8')
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#cnxn.setdecoding(pyodbc.SQL_WCHAR, encoding='utf-8')
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#cnxn.setencoding(encoding='utf-8')
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#cursor = cnxn.cursor()
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#cursor.execute("SELECT * from db.t")
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#row = cursor.fetchone()
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#while row:
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# print(row)
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# row = cursor.fetchone()
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#cursor.close()
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#cursor = cnxn.cursor()
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#cursor.execute("""
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#INSERT INTO db.t values (?,?,?,?,?,?,?,?,?,?)
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#""",
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#"2020-12-12 00:00:00",
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#1,
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#27,
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#32767,
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#147483647,
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#223372036854775807,
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#23.456,
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#899.999999,
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#"foo",
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#"bar")
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cursor = cnxn.cursor()
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cursor.execute("drop database if exists db");
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("create database db");
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("create table db.mt (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin binary(40), blob nchar(10))");
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("insert into db.mt values('2020-10-13 06:44:00', 1, 127, 32767, 32768, 32769, 123.456, 789.987, 'hello', 'world')")
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("insert into db.mt values(?,?,?,?,?,?,?,?,?,?)", "2020-10-13 07:06:00", 0, 127, 32767, 32768, 32769, 123.456, 789.987, "hel后lo", "wo哈rld");
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("SELECT * from db.mt")
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row = cursor.fetchone()
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while row:
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print(row)
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row = cursor.fetchone()
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cursor.close()
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#cursor = cnxn.cursor()
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#cursor.execute("drop database if exists db");
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#cursor.close()
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#
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#cursor = cnxn.cursor()
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#cursor.execute("create database db");
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#cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("create table db.t (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin binary(4), blob nchar(4))");
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("insert into db.t values('2020-10-13 06:44:00', 1, 127, 32767, 32768, 32769, 123.456, 789.987, 'hell', 'worl')")
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("SELECT * from db.t")
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row = cursor.fetchone()
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while row:
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print(row)
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row = cursor.fetchone()
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("create table db.v (ts timestamp, v1 tinyint)")
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cursor.close()
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params = [ ('A', 1), ('B', 2), ('C', 3) ]
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params = [ ('A', 1), ('B', 2), ('C', 3) ]
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params = [ ('2020-10-16 00:00:00', 1),
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('2020-10-16 00:00:01', 4),
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('2020-10-16 00:00:02', 5),
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('2020-10-16 00:00:03.009', 6) ]
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cursor = cnxn.cursor()
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cursor.fast_executemany = True
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cursor.executemany("insert into db.v values (?, ?)", params)
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("SELECT * from db.v")
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row = cursor.fetchone()
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while row:
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print(row)
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row = cursor.fetchone()
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("SELECT * from db.v where v1 > ?", 4)
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row = cursor.fetchone()
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while row:
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print(row)
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row = cursor.fetchone()
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("SELECT * from db.v where v1 > ?", '5')
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row = cursor.fetchone()
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while row:
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print(row)
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row = cursor.fetchone()
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cursor.close()
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cursor = cnxn.cursor()
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cursor.execute("create table db.f (ts timestamp, v1 float)")
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cursor.close()
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params = [ ('2020-10-20 00:00:10', '123.3') ]
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cursor = cnxn.cursor()
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cursor.fast_executemany = True
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cursor.executemany("insert into db.f values (?, ?)", params)
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cursor.close()
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