Mysql if then

The IF statement for stored programs implements a basic conditional construct.

Decision Making in scripting is similar to decision-making in real life. In scripting, DBAs face some situations where they want a certain part of the script to be executed when some condition is fulfilled. Skip to content. Change Language. Open In App. Related Articles.

Mysql if then

Based on a certain condition, it allows us to execute a set of SQL statements. Let us see each of these statements in detail. This statement executes a set of SQL queries based on certain conditions or expressions. In the above syntax, we have to specify a condition for executing the code. The IF ENDIF block executes with stored programs and terminates with a semicolon, as shown in the below example. If we want to execute other statements when the condition specifies in the IF block does not evaluate to true, this statement can be used. Let us modify the above myResult stored procedure. So, first, remove myResult stored procedure by using the command below:. If we want to execute a statement based on multiple conditions, this statement can be used. Otherwise, it will evaluate elseif-condition.

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We will also learn different forms of the IF statement and their examples. As mentioned earlier, it works similarly to the if statements in other programming languages. When the given search condition becomes true, the THEN block executes. Otherwise, the else block will be executed. If neither condition evaluates to true, the ELSE block will be executed.

Mysql if then

Structured Query Language SQL forms the backbone of many modern data-driven applications, offering a rich set of commands to manipulate and query relational databases. We will uncover the syntax and explore how to implement various logical scenarios with a series of code examples to guide us through the learning process. This will not only enhance our understanding of conditional logic in SQL but also equip us with practical skills to optimize database queries and procedures. This structure lays the foundation for more complex decision-making processes within stored procedures and functions in MySQL. It enables SQL programmers to guide the flow of execution based on varying conditions that can be evaluated within the database queries. Here are some best practices to keep in mind:. Through careful implementation and adherence to best practices, one can construct sophisticated queries and procedures that address complex data operations with precision and reliability. Search tutorials, examples, and resources. Table Of Contents. Notify of.

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Local Variable Scope and Resolution. Report issue Report. Control System. Programs Full Access Best Value! Decision Making in scripting is similar to decision-making in real life. Restrictions on Subqueries. Python Turtle. You can use indentation to make nested flow-control blocks more easily readable by humans although this is not required by MySQL , as shown here:. Insert multiple values into multiple tables using a single statement in SQL Server. Variables in Stored Programs.

Decision Making in scripting is similar to decision-making in real life. In scripting, DBAs face some situations where they want a certain part of the script to be executed when some condition is fulfilled.

While using W3Schools, you agree to have read and accepted our terms of use , cookie and privacy policy. Log in Sign Up. Create your own website with W3Schools Spaces - no setup required. Cyber Security. C Programming. Generated Invisible Primary Keys. You will be notified via email once the article is available for improvement. END IF block, like all other flow-control blocks used within stored programs, must be terminated with a semicolon, as shown in this example:. Backend Python Exercise Quiz. Create Improvement. InnoDB Cluster. View More.