SQL Training

❮ Previous SQL Editor Next ❯ SQL Trigger A trigger is a set of SQL statements that reside in system memory with unique names. It is a specialized category of stored procedure that is called automatically when a database server event occurs. Each trigger is always associated with a table. A trigger is called a […]

❮ Previous SQL Editor Next ❯ SQL Full Join The SQL full join is the result of combination of both left and right outer join and the join tables have all the records from both tables. It puts NULL on the place of matches not found. SQL full outer join is used to combine the

❮ Previous SQL Editor Next ❯ SQL Right Join Join operation in SQL is used to combine multiple tables together into a single table. If we use the right join to combine two different tables, then we will get all the records from the right table. But we will get only those records from the

❮ Previous SQL Editor Next ❯ SQL Left Join The join operation in SQL is used to combine multiple tables together into a single table. If we use left join to combine two different tables, then we will get all the records from the left table. But we will get only those records from the

❮ Previous SQL Editor Next ❯ SQL Inner Join INNER JOIN in SQL is the most common and important type of join which allows users to access matching data from two or more tables. When the join condition is met between the tables, then it returns all the common rows from them. The Venn diagram

❮ Previous SQL Editor Next ❯ SQL Stored Procedures A stored procedure is a prepared SQL code that you can save, so the code can be reused over and over again. So if you have an SQL query that you write over and over again, save it as a stored procedure, and then just call