What is Trigger,Store procedure, join in sql query and their syntax

Question

Accepted Answer

A trigger is a database object that is automatically executed in response to certain events. A stored procedure is a named group of SQL statements that can be executed. A join is used to combine rows from two or more tables based on a related column between them.

Triggers are used to enforce business rules, perform data validation, or automate tasks.
Stored procedures are used to encapsulate a set of SQL statements for reuse and better performance.
Joins are used to retrieve data from multiple tables based on a related column.
Syntax examples: TRIGGER trigger_name {BEFORE | AFTER} {INSERT | UPDATE | DELETE} ON table_name FOR EACH ROW BEGIN ... END;
Syntax examples: CREATE PROCEDURE procedure_name [parameters] AS BEGIN ... END;
Syntax examples: SELECT column_name(s) FROM table1 JOIN table2 ON table1.column_name = table2.column_name;

Accepted Answer

trigger is a stored procedure that runs automatically when various events happen

Accepted Answer

Stored procedures can be invoked explicitly by the user

On the other hand, trigger is a stored procedure that runs automatically when various events happen

As update, insert, delete)

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What is Trigger,Store procedure, join in sql query and their syntax

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