Can we use the if condition in MySQL?
The MySQL IF() function is used to validate a condition. The IF() function returns one value if the condition is TRUE and another value if the condition is FALSE. The MySQL IF() function can return values that can be numeric or string, depending on the context in which the function is used.
Table of Contents
How to execute a function in MySQL?
CREATE FUNCTION isodd(input_number int) RETURNS int BEGIN DECLARE v_isodd INT; IF MOD(input_number,2)=0 THEN SET v_isodd=FALSE; OTHERWISE SET v_isodd=TRUE; WILL END YES; RETURN(v_isodd); FINAL ; From the MySQL command line, we can call our simple stored function in several ways.
What are procedures in MySQL?
A procedure is a subroutine (like a subprogram) in a normal programming language, stored in a database. In the case of MySQL, the procedures are written in MySQL and stored in the MySQL database/server. A MySQL procedure has a name, a list of parameters, and SQL statements.
When to use a condition handler in MySQL?
MySQL has its own set of error codes that are unique to the MySQL server. A driver condition that refers to an unqualified numeric code refers to a MySQL error code. For example, the following handler will fire when MySQL error code 1062 (duplicate key value) is encountered:
What kind of error handling does MySQL do?
MySQL provides an easy way to define controllers that handle everything from general conditions like warnings or exceptions to specific conditions, eg specific error codes.
What does MySQL do when condition matches value?
If a condition whose value matches condition_value, MySQL will execute the statement and continue or exit the current code block depending on the action. The action accepts one of the following values:
When to use notfound condition in MySQL?
The NOTFOUND condition is used for a cursor or a SELECT INTO variable_list statement. A named condition associated with a MySQL error code or SQLSTATE value. The statement could be a simple statement or a compound statement enclosed by the BEGIN and END keywords. Let’s take some examples of declaration controllers.
How do you write an if else condition in a function?
The If-Else Statement The general form of if-else is as follows: if (test expression) { Block of statements true } Else { Block of statements false } Statements; In this type of construct, if the value of test-expression is true, then the true block of statements will be executed.
How to write an if statement with multiple conditions in MySQL?
MySQL MySQLi Database You can use the if statement in a stored procedure with multiple conditions with the help of AND or OR operator. The syntax is as follows: DECLARE X int; DECLARE AND int; SET X = value1; SET Y = value2; IF ((X < YYX > value1 YY >value2) OX ! = anyValueToCompare) THEN yourDeclaration; ELSE yourDeclaration; WILL END YES
How do you define a condition in MySQL database?
Condition in MySQL can be defined as an open source RDBMS (Relational Database Management System) that uses a standard language SQL – Structured Query Language to manipulate, store and retrieve records in databases. In simple words, we can say that MYSQL is a database server which is fast, secure and easy to use application.
When to use IF THEN ELSE statement in MySQL?
MySQL IF-THEN-ELSE statement. In case you want to execute other statements when the condition in the IF branch does not evaluate to TRUE, you can use the IF-THEN-ELSE statement as follows: IF condition THEN statements; ELSE else statements; WILL END YES; Code language: SQL (Structured Query Language) (sql)
What is the best conditional function in MySQL?
1 IF() function. If the condition is TRUE, the result is “YES” and if the condition is FALSE, then “NO”. 2 COALESCE() function. Returns the first non-null value in a list. 3 CASE function. 4 ISNULL() function. 5 NULLIF() Function. 6 IFNULL() Function. 7 MAJOR. 8 inches. 9 LESS.