How can I use the WHERE and ID parameters for the construction of a SQL query?
I am assigned a particular task for which I am using SQL queries. In a particular project or task, I want to design or even construct an SQL query by using the keyword “WHERE” and an ID parameter for retrieving specific information for a given user or records.
In the context of SQL, if you have a table named “users” and now you want to retrieve the information for a particular user with a known ID, then you can use the query of SQL like this:-
SELECT user_id, username, email, age
FROM users
WHERE user_id = 123;You can replace “user Id” with the real name of your column which represents the ID of your users. You can also replace 123 with the actual ID which you are looking for. This above Query would retrieve all the required columns for the users with the provided ID from the table called “users”.
Consider that you have a database table named “users” with the columns like “user I’d”, “username” “email” and “age” and your task is to retrieve the information for a particular user, then you can modify the SQL query like following:-
SELECT user_id, username, email, age
FROM users
WHERE user_id = 123;