Working with SQL DatabasesIn Chapter 4, we created simple routes for the application to list tasks via a static data model. That was enough to start to explore some basic concepts about API resources.doi:10.1007/978-1-4842-2442-7_5Caio Ribeiro Pereira...
提示: yii\db\ActiveRecord::findOne() 和yii\db\ActiveQuery::one() 都不会添加 LIMIT 1到 生成的 SQL 语句中。如果你的查询会返回很多行的数据, 你明确的应该加上 limit(1) 来提高性能,比如 Customer::find()->limit(1)->one()。除了使用查询生成器的方法之外,你还可以书写原生的 SQL 语句来查询数据...
提示: yii\db\ActiveRecord::findOne() 和yii\db\ActiveQuery::one() 都不会添加 LIMIT 1到 生成的 SQL 语句中。如果你的查询会返回很多行的数据, 你明确的应该加上 limit(1) 来提高性能,比如 Customer::find()->limit(1)->one()。除了使用查询生成器的方法之外,你还可以书写原生的 SQL 语句来查询数据...
On October 16, 2020, we hosted the live webinar ‘Working with SQL and Databases in IntelliJ IDEA’ byMaksim Sobolevskiy, Product Marketing Manager for Database Tools at JetBrains. He started with the basics of writing a simple query faster, and progressed to more complicated tasks like updat...
The following list is a set of suggested techniques you can use to improve the performance, security, and ease of maintenance of your applications when working with local SQL databases. Pre-create database connections Even if your application doesn’t execute any statements when it first loads, ...
Server Name: sqlshackdemo-server.database.windows.net Authentication Type: SQL Server Authentication Username: sqlshackuser Password: !SecuredPassword@123 Figure 7 – Connecting to SQL Database using SSMS Once the login is successful, you can see the list of databases that are available in the ...
Spreadsheets with Tableau Getting Started with Spreadsheets Beginner's Guide to PostgreSQL SQL and Spreadsheets Courses curso Introduction to SQL 2 hr 661.7KLearn how to create and query relational databases using SQL in just two hours. Ver DetalhesIniciar curso curso Introduction to Google Sheets 2 ...
SQL, that is,Structured Query Languageis the language that lets you access and manipulatedatabasesin a RDBMS. SQL can be divided into two parts—DDL and DML. TheDDL, that is,Data Definition Languageis the branch of the language that basically allows creating or deleting databases and tables....
In this new chapter, we will show the following examples in a local SQL Server using sqlcmd: Working with sqlcmd interactive mode including how to connect to SQL Server check the current database list databases check if the SQL Server is case sensitive check the SQL Server edition ...
Microsoft SQL Server 2000 or later OracleIf you want to use an application component other than db, or if you want to work with multiple databases using AR, you should override CActiveRecord::getDbConnection(). The CActiveRecord class is the base class for all AR classes.Tip...