mirror of
https://github.com/taosdata/TDengine
synced 2026-05-24 10:09:01 +00:00
103 lines
3 KiB
Python
103 lines
3 KiB
Python
from new_test_framework.utils import tdLog, tdSql, sc, clusterComCheck
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class TestFuncStddev:
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def setup_class(cls):
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tdLog.debug(f"start to execute {__file__}")
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def test_func_stddev(self):
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"""Stddev 函数
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1. 创建包含一个 Int 普通数据列的超级表
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2. 创建子表并写入数据
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3. 对子表执行 Stddev 查询，包括时间窗口、时间戳列筛选
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Catalog:
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- Function:Aggregate
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Since: v3.0.0.0
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Labels: common,ci
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Jira: None
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History:
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- 2025-4-28 Simon Guan Migrated from tsim/compute/stddev.sim
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"""
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dbPrefix = "m_st_db"
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tbPrefix = "m_st_tb"
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mtPrefix = "m_st_mt"
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tbNum = 10
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rowNum = 20
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totalNum = 200
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tdLog.info(f"=============== step1")
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i = 0
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db = dbPrefix + str(i)
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mt = mtPrefix + str(i)
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tdSql.prepare(db, drop=True)
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tdSql.execute(f"use {db}")
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tdSql.execute(f"create table {mt} (ts timestamp, tbcol int) TAGS(tgcol int)")
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i = 0
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while i < tbNum:
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tb = tbPrefix + str(i)
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tdSql.execute(f"create table {tb} using {mt} tags( {i} )")
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x = 0
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while x < rowNum:
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cc = x * 60000
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ms = 1601481600000 + cc
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tdSql.execute(f"insert into {tb} values ({ms} , {x} )")
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x = x + 1
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i = i + 1
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tdLog.info(f"=============== step2")
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i = 1
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tb = tbPrefix + str(i)
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tdSql.query(f"select stddev(tbcol) from {tb}")
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tdLog.info(f"===> {tdSql.getData(0,0)}")
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tdSql.checkData(0, 0, 5.766281297)
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tdLog.info(f"=============== step3")
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cc = 4 * 60000
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ms = 1601481600000 + cc
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tdSql.query(f"select stddev(tbcol) from {tb} where ts <= {ms}")
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tdLog.info(f"===> {tdSql.getData(0,0)}")
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tdSql.checkData(0, 0, 1.414213562)
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tdLog.info(f"=============== step4")
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tdSql.query(f"select stddev(tbcol) as b from {tb}")
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tdLog.info(f"===> {tdSql.getData(0,0)}")
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tdSql.checkData(0, 0, 5.766281297)
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tdLog.info(f"=============== step5")
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tdSql.query(f"select stddev(tbcol) as b from {tb} interval(1m)")
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tdLog.info(f"===> {tdSql.getData(0,0)}")
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tdSql.checkData(0, 0, 0.000000000)
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tdSql.query(f"select stddev(tbcol) as b from {tb} interval(1d)")
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tdLog.info(f"===> {tdSql.getData(0,0)}")
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tdSql.checkData(0, 0, 5.766281297)
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tdLog.info(f"=============== step6")
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cc = 4 * 60000
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ms = 1601481600000 + cc
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tdSql.query(
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f"select stddev(tbcol) as b from {tb} where ts <= {ms} interval(1m)"
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)
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tdLog.info(f"===> {tdSql.getData(0,0)}")
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tdSql.checkData(0, 0, 0.000000000)
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tdSql.checkRows(5)
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tdLog.info(f"=============== clear")
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tdSql.execute(f"drop database {db}")
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tdSql.query(f"select * from information_schema.ins_databases")
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tdSql.checkRows(2)
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