How to Create & Transfer Schemas in SQL Server (Practical) | T-SQL Course Part 17 скачать в хорошем качестве

How to Create & Transfer Schemas in SQL Server (Practical) | T-SQL Course Part 17

Move from theory to practice! In this tutorial, we get hands-on with T-SQL to manage database schemas. I will show you exactly how to create custom logical containers and move your tables between them using the TRANSFER command. What you will learn in this hands-on lesson: Schema Creation: The syntax for building custom containers like [HR] or [Sales]. The TRANSFER Command: How to move a table from the default 'dbo' schema to your new custom schema. Schema Verification: How to write a query to see a list of all tables and their assigned schemas. Best Practices: Why prefixing your table names with the schema name is essential for professional development. Troubleshooting: Understanding why you must use the schema name in your SELECT statements after moving a table. T-SQL PRACTICAL SCRIPT -- 1. CREATING A NEW SCHEMA -- This creates a logical "folder" for your objects CREATE SCHEMA [HR] GO -- 2. MOVING A TABLE TO THE NEW SCHEMA -- Syntax: ALTER SCHEMA [NewSchema] TRANSFER [OldSchema].[TableName] -- In this example, we move 'EmployeeDetails' from 'dbo' to 'HR' ALTER SCHEMA [HR] TRANSFER [dbo].[EmployeeDetails] -- 3. VIEWING OBJECTS INSIDE SCHEMAS -- We join two system views to see exactly where our tables live SELECT s.name AS SchemaName, t.name AS TableName FROM sys.tables AS t INNER JOIN sys.schemas AS s ON t.schema_id = s.schema_id ORDER BY SchemaName; -- 4. QUERYING THE MOVED TABLE -- Note: You must now use the schema prefix SELECT * FROM [HR].[EmployeeDetails] #SQLServer #TSQL #DatabaseManagement #SQLSchema #SSMS #LearnSQL #DatabaseAdmin #SQLTutorial #DataEngineering