The course emphasises on practical learning. It includes a series of hands-on labs that enable learners to practice building and running SQL queries on a live database. Students also learn how to access databases from Jupyter notebooks using SQL and Python. Key Highlights Get started with perform...
The SQL Server Database Engine processes queries on various data storage architectures such as local tables, partitioned tables, and tables distributed across multiple servers. The following sections cover how SQL Server processes queries and optimizes query reuse...
SQL Server builds intelligent, dynamic plans that make efficient use of distributed queries to access data from remote member tables:The Query Processor first uses OLE DB to retrieve the check constraint definitions from each member table. This allows the query processor to map the distribution of ...
we use the comments either to add some description or disable some code blocks of the queries. However, adding brief and understandable explanations to our SQL queries is one best practice because, over time, the purpose of the query and its...
This course is for complete beginners and is designed to make you proficient in writing SQL queries. This online SQL class has been created by one of the top Udemy instructors Colt Steele. After learning from this course you will be able to generate reports and build applications using SQL an...
Best Practice: Use of semi-colon to terminate statements; Best practices in writing queries for huge dataset Best way to delete 311 million records from SQL Server 2017 Best way to Delete million records from billion records table Best way to Delete the Data Best way to force materialize a CT...
SQL Server sometimes adds data-dependent implied predicates to WHERE clauses of queries in some indexed views. If the underlying data changes, such implied predicates become invalid, and the associated cached query plan needs recompilation. Cursor options changed 10 Change in cursor options Option (...
SSIS : Execute SQL Task component - Can it handle multiple queries ? SSIS : Package execution completed.Click here to switch to design mode, or select stop debugging from debug menu SSIS : The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine(64 bit) even after in...
SELECT name FROM Students /* Fetch the union of queries */ UNION SELECT name FROM Contacts; SELECT name FROM Students /* Fetch the union of queries with duplicates*/ UNION ALL SELECT name FROM Contacts; SELECT name FROM Students /* Fetch names from students */ MINUS /* that aren't prese...
The application retry logic is designed to catch any errors that occur while connecting to the database or executing commands (queries or transactions) on the database. When an error occurs, connectivity is re-established, and then failed commands are re-executed if necessary (not all failures ...