Data access between different DBMS and other txtcsv data source
In this essay, I will show you an example about data access between different DBMS and other txt/csv data source by DB Query Analyzer
In this essay, I will show you an example about data access between different DBMS and other txt/csv data source by DB Query Analyzer
本文将以中文版本DB 查询分析器7.022版本为例,详细介绍 如何使用DB查询分析器来进行不同数据源中数据表的相互访问。
You can save each result to different file when executing multi SQL scripts In DB Query Analyzer 7.01 .
本文将以中文版本DB 查询分析器7.01版本为例,详细介绍 新增的执行的多条SQL语句返回的记录集保存到多个文件中、执行结果保存文件时用户自定义导出文件中的字段间分隔符与行结束符。
DB Query Analyzer 7.01 allows usersto define monthly or weekly SQL executing plans. Here I will show you how the powerful function works.
本文将以中文版本DB 查询分析器7.01版本为例,详细介绍 新增的强大的周和月的“SQL 执行计划”、执行的多条SQL语句返回的记录集保存到多个文件中、执行结果保存文件时用户自定义导出文件中的字段间分隔符与行结束符。
Considering the complex of the data required by Ministry of Transport of P.R.C every period of ten days, I design the following algorithm to generate the data required.
本文将以中文版本《DB 查询分析器》6.04版本为例,详细介绍 如何使用它的执行计划功能,来组装起来各个算法脚本,来高效地生成交通部复杂的旬报货运量数据。
String locating is a very common operation not only in the SQL design but also in the client development tools, in which functions are also supplied to realize the locating operation, such as the 'LOCATE' function in DB2 or 'POS function in DELPHI. In fact, we may meet with the special string locating, such as, we have to locate fixed length string locating, in which you may get the wrong result if you use the given 'LOCATE or 'POS function. In the essay, I give an algorithm that you can easily transform to other DBMS or client development tools.
字符串的查找是数据库应用中必不可少的操作,而且每种数据库产品(ORACLE、DB2、SYBASE、MS SQL SERVER、MYSQL等等)也都提供了对应的字符串处理函数,比如DB2的LOCATE函数。 但在实际的工作中,还是会遇到一些特殊情况的处理,这使得直接使用字符串查找函数,得到的结果可能是错误的,比如本文中提到的固定长度编码格式的字符串的查找。本文介绍了通用固定长度编码格式的字符串查找算法的实现。