In the previous article we have mastered the basic data curd method, but in more cases, due to the differences in business logic, curd operations are often not so simple, especially complex business logic below, this is the ActiveRecord mode of
thinkphp query Language with coherent operation can be very good to solve the complex business logic requirements, this article we first to in-depth understanding of the framework of the query language.
1. Query Language Introduction
create table [dbo].[ tgongwen] ( --tgongwen is red-headed table name [Gid] [int] identity (1, 1) not null , --The ID number of this table, also the primary key [ title] [varchar] ( collate chinese_prc_ci_as ); null ,
Explain the usage examples of oracle cross-database query dblink, oracledblink
This example describes how to query dblink across oracle databases. We will share this with you for your reference. The details are as follows:
1. jobs before
35. use SQL query analyzer and SQL profilerUse SQL query AnalyzerUse SQL profilerOptimize T-SQL statementSummaryIn this chapter, we will continue with the description of the pre-stored procedures in Chapter 21st. This chapter describes how to use
Quote Please specify http://www.cnblogs.com/13590/archive/2013/03/14/2958735.htmlAbstract: query is the core of database SQL language, this paper introduces simple query, conditional query, dynamic query and multi-table query of database by
Query optimization Technology of databaseQuery optimization Technology of databaseDatabase system is the core of MIS, and online transaction processing (OLTP) and online analytical Processing (OLAP) based on database is one of the most important
mysql| Data | database | optimization
Database system is the core of MIS, and online transaction processing (OLTP) and online analytical Processing (OLAP) based on database is one of the most important computer applications in banks, enterprises and
Tips for using the universal database query analyzer (10)
--- More efficient query result export function than DB2 Export
(Guangdong Union Electronic Service Co., Ltd., Guangzhou 510300, China)
SummaryThis article describes in detail
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