数据记录1
- 格式:xls
- 大小:16.50 KB
- 文档页数:61
如何去掉数据库重复记录并且只保留⼀条记录在n条记录⾥,存在着些相同的记录,如何能⽤SQL语句,删除掉重复并保留⼀条呢?⽅法如下:1、查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断select * from people where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1)2、删除表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断,只留有rowid最⼩的记录 delete from people where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1) and rowid not in (select min(rowid) from people group by peopleId having count(peopleId )>1)3、查找表中多余的重复记录(多个字段)1. select * from vitae a2. where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1)4、删除表中多余的重复记录(多个字段),只留有rowid最⼩的记录1. delete from vitae a2. where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1)3. and rowid not in (select min(rowid) from vitae group by peopleId,seq having count(*)>1)5、查找表中多余的重复记录(多个字段),不包含rowid最⼩的记录1. select * from vitae a2. where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1)3. and rowid not in (select min(rowid) from vitae group by peopleId,seq having count(*)>1)。
oracle sql 查询满足条件的1条记录全文共四篇示例,供读者参考第一篇示例:在数据库操作中,查询是一种非常常见的操作。
Oracle SQL是一种用于管理Oracle数据库的查询语言,它可以帮助用户高效地从数据库中检索数据。
在实际的数据库管理中,经常会遇到需要查询满足特定条件的记录的情况。
本文将介绍如何使用Oracle SQL查询满足条件的1条记录,并提供一些示例方便大家理解。
让我们来了解一下Oracle SQL的基本语法。
在Oracle SQL中,查询通常以SELECT语句开始,用于指定要检索的列。
其基本语法格式如下:SELECT 列名1, 列名2, ...FROM 表名WHERE 条件;上面的语句中,列名表示想要检索的列,表名表示要检索的数据表,条件表示要满足的筛选条件。
在我们想要查询满足条件的1条记录时,可以在条件中使用一些特殊语法,例如ROWNUM来限制返回的记录数量。
假设我们有一个名为employee的员工表,存储了员工的信息,包括员工编号(emp_id)、员工姓名(emp_name)、部门(department)、薪资(salary)等列。
现在我们想要查询薪资最高的员工的信息,可以使用以下SQL语句:SELECT emp_id, emp_name, department, salaryFROM employeeWHERE salary = (SELECT MAX(salary) FROM employee);上面的查询语句中,我们首先计算了employee表中薪资的最大值,然后在主查询中筛选出薪资等于最大值的员工记录。
这样我们就可以得到薪资最高的员工信息。
除了使用子查询来实现这种查询方式之外,我们还可以使用ROWNUM来控制返回的记录数量。
下面是一个使用ROWNUM的例子:在上面的查询语句中,我们首先按照薪资降序排序,然后使用ROWNUM来限制返回的记录数量不超过1条,这样就可以得到薪资最高的员工信息。
【数据记录与处理】 1、数据记录表1:KNO 3的积分溶解热数据记录(295.15K,80.84kpa )i 空瓶(前)/g空瓶+样品/g空瓶(后)/gwi/g ∑wi/g t/sQ/j noQs/j/mol1 11.4052 2.4996 11.4075 2.4973 2.4973 317 817.3782449.477433090.5105 2 12.1202 1.4884 12.1307 1.4779 3.9752 500 1289.2400 282.3707 32788.8318 3 11.4350 2.512 11.4386 2.5084 6.4836 816 2104.0397 173.1260 32808.6883 4 11.6260 2.5018 11.6296 2.49828.9818 1097 2828.5926 124.972731838.9084 5 8.8470 3.5779 8.8501 3.5748 12.5566 1508 3888.3478 89.3936 31307.1983 6 10.9417 4.017 10.9464 4.0123 16.5689 1957 5046.0854 67.7462 30790.1689 7 10.4941 4.0807 10.5043 4.0705 20.6394 2395 6175.4596 54.3853 30249.8602 88.83644.51058.84014.5068 25.1462 2864 7384.7667 44.638229690.36732、数据处理U= 3.68V 、I=0.688A 、P=UI=3.68*0.688=2.53W 。
no 的计算:no=∑i W 48.1122, Q=UIt, Qs=∑∑=iKNO kno W M Q n Q33*29500.0030000.0030500.0031000.0031500.0032000.0032500.0033000.0033500.00050100150200250300350400450500noQ s图1:Qs —no 关系图1、本实验的装置可从以下几个方面改进:本实验采用杜瓦瓶作为反应装置,可视性不好,可以考虑用透明的绝热玻璃装置,增强反应的透明度,更容易观察硝酸钾的溶解性。
空调温度调节观测记录表1
1. 项目简介
本观测记录表用于记录空调温度调节过程中的相关数据和观察结果。
2. 观测数据表格
以下是观测数据的记录表格:
3. 观察结果说明
根据所记录的数据,进行必要的观察结果说明,可以包括但不限于以下几个方面:
- 温度设定值与室内温度变化的关系
- 室内温度与室外温度的关系
- 空调调节效果评估
- 其他观察结果和发现
4. 结论
结合观察结果,得出对空调温度调节的总体评价和建议。
5. 备注
在记录观测数据和观察结果时,应遵循以下注意事项:
- 确保观测数据的准确性和完整性;
- 可以使用合适的图表和图形来辅助观察结果的说明;
- 针对重要的观察结果,可以给出相应的解释或分析;
- 若观察过程中出现特殊情况或问题,应及时记录并提供详细说明。
以上是本次空调温度调节观测记录表的内容。
如有任何问题或需要进一步帮助,请随时与我联系。
人教版数学二年级下册第一单元(第二课时)《记录数据的方法》教学设计一. 教材分析《记录数据的方法》是人教版数学二年级下册第一单元(第二课时)的教学内容。
本节课的主要内容是让学生掌握用画“正”字的方法记录数据,以及能够根据数据的特点选择合适的记录方法。
教材通过简单的实例,引导学生发现用画“正”字的方法可以方便地记录数据,并且能够清楚地看出各种数据的多少。
二. 学情分析二年级的学生已经具备了一定的数数和统计的能力,能够理解简单的数据概念。
但是他们对于数据的记录和整理方法可能还不够熟悉,需要通过实际的操作和练习来掌握。
此外,学生可能对于用画“正”字的方法记录数据感到新奇,需要教师引导他们发现这种方法的优点。
三. 教学目标1.让学生掌握用画“正”字的方法记录数据。
2.让学生能够根据数据的特点选择合适的记录方法。
3.培养学生的观察能力和数据分析能力。
四. 教学重难点1.教学重点:掌握用画“正”字的方法记录数据。
2.教学难点:根据数据的特点选择合适的记录方法。
五. 教学方法1.采用情境教学法,通过生活实例引出数据记录的问题。
2.采用小组合作学习法,让学生在小组内讨论和探索数据记录的方法。
3.采用操作练习法,让学生亲自动手实践,掌握数据记录的方法。
六. 教学准备1.准备一些实际的数据,如学生的身高、年龄等。
2.准备一些记录数据的工具,如纸和笔。
3.准备一些小组合作学习的材料,如小卡片等。
七. 教学过程1.导入(5分钟)教师通过呈现一些实际的数据,如学生的身高、年龄等,引导学生发现这些数据需要记录下来。
然后提问:“你们知道怎么记录这些数据吗?”让学生思考和讨论。
2.呈现(10分钟)教师介绍用画“正”字的方法记录数据。
通过实际的操作演示,让学生了解这种方法的步骤和要点。
同时,教师解释为什么用画“正”字的方法可以清楚地看出各种数据的多少。
3.操练(10分钟)教师让学生分成小组,每组发一些小卡片,上面写有不同的数据。
Using real-time measurement data directly from a Digimatic-output measuring tool, the high performance DP-1VA LOGGER performs complex statistical calculations such as those needed for Xbar-R control charts, histograms and D-charts.The data logger function also allows storage of up to 1,000 pieces of data in memory, and batch transfer of stored data to an Excel-format inspection certificate, etc., by connecting to a PC with a USB cable. The DP-1VA LOGGER is the result of the pursuit of excellent portability and flexibility in the 2-way power supply system, and provides significant potential for efficiency improvements in the quality control function."d2" is the generic name for Mitutoyo Digimatic output compatiblewith up to 8 digits of I/O data.Digimatic Mini-ProcessorDigimatic data-logging processor delivers outstanding performanceL O G G E RThe combination of USB-ITPAK V2.1 and MeasurLink allows the processor to register/automate the Excel input procedure and display statistical processing results such as a control chart in real time.Analysis by PCMeasurement and storage at siteTransferCustom Excel sheetBatch output of logging data by connecting the processor to a PCData input to a custom inspection sheet created by Mitutoyo-specific application software or ExcelEquipped with the data logger function able to store up to 1000 pieces of measurement data.3Allows printing of CE year, month,day, hour and minute.Clock functionLarge and easy-to-operate keysndicates measurement result is smaller than the lower limit ndicates measurement result is within the tolerance limits ndicates measurement result is larger than the upper limittransmission upon measurement and batch Press to turn power on/off.Press to turn on/off the print function for measurement and [CLEAR] keyPress to clear all measurement data.[CANCEL] keyPress to cancel the most recently input measurement data.Press longer than 10 seconds to reset hardware, clear measurement data/log data, and initialize the current date and time.[DATA] keyExecutes data output.results. Press longer than usual to print and USB-output log data.One-touch paper loadingConnects a cable from a Digimatic measuring tool.Data input connectorStrap attachmentContinuous measurementData from a measuring tool can be automatically input at a certain interval (0.25 sec, 1 sec, 5 sec, 30 sec, 1 min, 30 min, 60 min), allowing automatic recording and logging of measurement data.Timer inputExample of printout Example of batch printing log dataThis setting allows printout of data number,China, B for Oceania without AC adapter and no suffix is required for Japan.*2: The printer paper has excellent environmental and chemical resistance, but it has limitations in durability due to thermosensitivity. If recorded paper is stored for more than 5 years, or used as a public document, it is recommended to make a more durable copy.*3: The battery life quoted is not a guaranteed value, but only a typical value.DIMENSIONSMeasurement Data Collection Software (optional)264-505 DP-1VA LOGGERExcel-specific Measurement Data Collection Software USB-ITPAK V2.1 (06AFM386)Measurement Data Collection/Statistical Analysis Software MeasurLink Real-Time Standard (64AAB606)This software allows efficiency improvements in inspection tasks that include repetitive work by automating input operations to Excel.This software visualizes statistical processing such as a control chart and process capability index in real time, thus achieving "Quality Visualization".■ USB cable (A-microB) (optional) 06AFZ050■ Foot switch (optional) 937179TSensor SystemsTest Equipment and SeismometersDigital Scale and DRO SystemsSmall Tool Instruments and Data ManagementMitutoyo America Corporation One Number to Serve You Better 1-888-MITUTOYO (1-888-648-8869)M 3 Solution Centers:Aurora, Illinois (Headquarters) Boston, Massachusetts Charlotte, North Carolina Cincinnati, Ohio Detroit, MichiganLos Angeles, California Birmingham, Alabama Seattle, Washington Houston, Texas1.5M 0819-00 • Printed in USA • Sept. 2019© 2019 M i t u t o y oA m e r i c a C o r p o r a t i o nFind additional product literature and our product catalogNote: All inform ation regarding our products, and in particular the illustrations, drawings, dim ensional and perform ance data contained in this printed matter as well as other technical data are to be regarded as approximate average values. We therefore reserve the right to make changes to the corresponding designs. The stated standards, similar technical regulations, descriptions and illustrations of the products were valid at the time of printing. In addition, the latest applicable version of our General Trading Conditions will apply. Only quotations submitted by ourselves may be regarded as definitive. Specifications are subject to change without notice.Mitutoyo products are subject to US Export Administration Regulations (EAR). Re-export or relocation of our products may require prior approval by an appropriate governing authority.Trademarks and RegistrationsDesignations used by companies to distinguish their products are often claimed as trademarks. In all instances where Mitutoyo Am erica Corporation is aware of a claim, the product nam es appear in initial capital or all capital letters. The appropriate companies should be contacted for more complete trademark and registration information.。
(灌砂法)试验记录
技术负责人:
按F9键刷新自动计算一次,数据随机;数据以下表为准
(灌砂法)试验记录
技术负责人:
按F10键刷新自动计算一次,数据随机;数据以下表为准F11键刷
按F11键刷新自动计算一次,数据随机;数据以下表为准按F12键刷新自动计算一次,数据随
刷新自动计算一次,数据随机;数据以下表为准
按F13键刷新自动计算一次,数据随机;数据以下表为准
年月
据随机;数据以下表为准按F14键刷新自动计算一次,数据随机;数据以下表为准
年月
按F15键刷新自动计算一次,数据随机;数据以下表为准
按F16键刷新自动计算一次,数据随机;数据以下表为准
按F17键刷新自动计算一次,数据随机;数据以下表为准
按F18键刷新自动计算一次,数据随机;数据以下表为准
按F19键刷新自动计
按F19键刷新自动计算一次,数据随机;数据以下表为准按F20键刷新自动计算一次,数据随机;数据
月日Array
动计算一次,数据随机;数据以下表为准
月日。