Fortunately, there are database development tools that can generate correct SQL queries for you, often by dragging and dropping tables and fields from the schema diagram into a query diagram. SQL ...

Most SQL database engines store the schema already parsed into various system tables. On those database engines, ALTER TABLE merely has to make modifications to the corresponding system tables. SQLite ...

My first step, therefore, is to define a Table variable to hold those properties: Declare @Customers Table (id nvarchar(100), createdOn Date); In a production system, rather than use a Table variable, ...