How to use Foreign Key in SQL?

How to use Foreign Key in SQL?

In this article, we will figure out how A FOREIGN KEY in one table focuses to a PRIMARY KEY in another table? Fundamentally, Foreign Key speaks to connection between tables. Syntax: column-name data_type (size) CONSTRAINT constraint-name References Table-name (Column-name) Example: Table 1: Table 2: First create a primary key in first table which is also … Read more

IN Operator with Example in SQL

IN Operator with Example in SQL

In this article, we will talk about utilization of IN Operator in SQL articulation. At the point when you have different conditions to be checked, we can use IN administrator rather than it. It determines the different values in a WHERE statement. Syntax: Example: customer_ID customer_Name Address city Country 3 Aman Gautam Roxy Gwalior India … Read more

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