Hello friends, in this SQL hands-on tutorial, you’ll find 50 tricky SQL queries for practice with their answers. Practicing tricky SQL queries is like sharpening your tools for working with data. SQL skills matter because they help you handle and understand information in databases, something t...
sqldatabasedb 26th Jan 2017, 3:35 AM BaHaMuT + 8 Already answered. Check this link :https://www.sololearn.com/Discuss/152553/?ref=app 26th Jan 2017, 5:20 PM Cezar + 1 I would suggest you this resource. It has the online code editor and a simple database to practice SQL queries:...
BASIC queries on movie Database [10 Exercises] SUBQUERIES on movie Database [16 Exercises] JOINS on movie Database [24 Exercises] Soccer Database Introduction BASIC queries on soccer Database [29 Exercises] SUBQUERIES on soccer Database [33 Exercises] JOINS queries on soccer Database [61 Exerci...
Sets Transact-SQL and query processing behaviors to be compatible with the specified version of the Database Engine.
For tips about how to assess the performance differences of your most important queries between two different compatibility levels on Azure SQL Database, see Improved Query Performance with Compatibility Level 130 in Azure SQL Database. This article refers to compatibility level 130 and SQL Server, ...
log_queries_not_using_indexes:是否记录所有未使用索引的查询语句,默认为OFF。 log_slow_admin_statements:慢速管理语句是否写入慢日志中,管理语句包含ALTER TABLE,ANALYZE TABLE,CHECK TABLE,CREATE INDEX,DROP INDEX,OPTIMIZE TABLE,REPAIR TABLE,默认为OFF即不写入。
AppContext.SetSwitch("Switch.Microsoft.Data.SqlClient.EnableRetryLogic", true); 启用.NET AppContext 开关后,可以单独为 SqlConnection 和SqlCommand 定义重试逻辑策略,也可以使用各种自定义选项来一起定义它们。 SqlConnection 和SqlCommand 中引入了新的公共 API,用于注册自定义 SqlRetryLogicBaseProvider 实现: c...
Solving practice questions is the fastest way to learn any subject. That’s why we’ve selected a set of 50 SQL queries that you can use to step up your learning. We’ve also given SQL scripts to create the test data. So, you can use them to create a test database and tables....
Introduction BASIC QUERIES SUBQUERIES JOINS ▼Hospital Database Introduction Exercises ▼Employee Database BASIC QUERIES SUBQUERIES ▼AdventureWorks Database Exercises ▼SQL Project SQL Beginners Projects ▼SQL Challenges Challenges-1 ..More to come..SQL Exercises, Practice, Solution - JOINSLast...
Learn how first normal form (1NF) can improve your database design by enforcing atomicity in your tables. Marie Fayard January 22, 2025 SQL SQL Subquery: A Comprehensive Guide Discover how to master SQL subqueries to enhance your database queries. Learn about correlated, non-correlated, and rec...