SQL Engineer Interview Questions and Answers

Types of Joins, Stored Procedures, Trigger and it's type

• Types of Joins: Inner Join, Left Join, Right Join, Full Outer Join

• Stored Procedures: Precompiled SQL statements, stored in database, reusable

• Trigger: Special type of stored procedure, executed automatically on specific events

• Types of Triggers: DML Trigger, DDL Trigger, Logon Trigger, CLR Trigger

row_number assigns a unique number to each row in a result set, while row_id is a unique identifier assigned to each row in a table.

• row_number is a function used in SQL to assign a unique number to each row in a result set

• row_id is a unique identifier assigned to each row in a table

• row_number is used for ranking and pagination purposes

• row_id is used for identifying a specific row in a table

• row_number is not persistent and changes with the result set, while row_id is persisten...read more