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[TreeView] DataFilter DL : 0: 当我们在操作数据集时，往往需要对数据进行筛选。例如：一个名为Customer的数据表，它具有CustNo、CustName、Country、Address、Phone、State、TaxRate等字段，如果只想查看国别为China或顾客号大于1000的顾客记录，就需要对数据集进行过滤。经总结，有下面这些过滤方法：一、利用Ttable和Tquery的Filter属性二、用ApplyRange筛选数据集的记录三、用OnFilterRecord事件筛选四、用Tquery控件的SQL语句-When we operate in data collection, data often need to be screened. For example : one called the Customer Data Sheet, which has CustNo, CustName. Country, Address, Phone, State, TaxRate other fields, If you only want to check China, or the country for more than 1,000 customers, customer records, on the need to filter data sets. After summing up, these filtering methods below : 1. Ttable Tquery use of the Filter and two attributes, ApplyRange screening using data set three records, Screening with OnFilterRecord four events, with Tquery Control SQL
Date : 2008-10-13 Size : 1.69kb User : chen
[TreeView] DataFilter DL : 0: 当我们在操作数据集时，往往需要对数据进行筛选。例如：一个名为Customer的数据表，它具有CustNo、CustName、Country、Address、Phone、State、TaxRate等字段，如果只想查看国别为China或顾客号大于1000的顾客记录，就需要对数据集进行过滤。经总结，有下面这些过滤方法：一、利用Ttable和Tquery的Filter属性二、用ApplyRange筛选数据集的记录三、用OnFilterRecord事件筛选四、用Tquery控件的SQL语句-When we operate in data collection, data often need to be screened. For example : one called the Customer Data Sheet, which has CustNo, CustName. Country, Address, Phone, State, TaxRate other fields, If you only want to check China, or the country for more than 1,000 customers, customer records, on the need to filter data sets. After summing up, these filtering methods below : 1. Ttable Tquery use of the Filter and two attributes, ApplyRange screening using data set three records, Screening with OnFilterRecord four events, with Tquery Control SQL
Date : 2026-01-09 Size : 1kb User : chen
[TreeView] 3 DL : 0: 基于信息流与编码在实际工程上的应用与理论分析-Based on the design of digital signal processing of digital filter and its application in engineering
Date : 2026-01-09 Size : 2kb User : 邹丽
[TreeView] wenxianzongshuchepai DL : 0: Using the FIR filter to achieve the voice signal filtering, and the output of the waveform, to achieve before and after filtering contrast.
Date : 2026-01-09 Size : 10kb User : 王春水