FULL OUTER JOIN

https://www.w3schools.com/sql/sql_join_full.asp The¬†FULL OUTER JOIN¬†keyword returns all matching records from both tables whether the other table matches or not. So, if there are rows in “Customers” that do not have matches in “Orders”, or if there are rows in “Orders” that do not have matches in “Customers”, those rows will be listed as well.

SQL Convert vs Cast

Convert vs Cast CAST and CONVERT are two SQL functions used by programmers to convert one data type to another. The CAST function is ANSI standard and is compatible to use in other databases while the CONVERT function is a specific function of the SQL server. Since the CAST function is compatible with other databases,... » read more

TSQL Merge

Sources: https://docs.microsoft.com/en-us/sql/t-sql/statements/merge-transact-sql?view=sql-server-ver15