Search results
Syntax. IF (condition, value_if_true, value_if_false) Parameter Values. Technical Details. Works in: From MySQL 4.0. More Examples. Example. Return 5 if the condition is TRUE, or 10 if the condition is FALSE: SELECT IF (500<1000, 5, 10); Try it Yourself » Example. Test whether two strings are the same and return "YES" if they are, or "NO" if not:
IF(type = 'P', amount, amount * -1) as amount. FROM report. See https://dev.mysql.com/doc/refman/8.0/en/flow-control-functions.html. Additionally, you could handle when the condition is null. In the case of a null amount: SELECT id, IF(type = 'P', IFNULL(amount,0), IFNULL(amount,0) * -1) as amount. FROM report.
11 lip 2024 · IF (1 > 3, 'true', 'false'): The IF function takes three arguments: The first argument is the condition to evaluate (1 > 3). The second argument is the value to return if the condition is true ('true'). The third argument is the value to return if the condition is false ('false').
Summary. Use IF...THEN statement to conditionally execute a block of statements based on the evaluation of a specified condition. Use IF...THEN...ELSE statement to execute a block of statements if a specified condition is true and an alternative block of statements if the condition is false.
The IF statement can have THEN, ELSE, and ELSEIF clauses, and it is terminated with END IF. If a given search_condition evaluates to true, the corresponding THEN or ELSEIF clause statement_list executes. If no search_condition matches, the ELSE clause statement_list executes.
MySQL IF function is one of the MySQL control flow functions that returns a value based on a condition. The IF function is sometimes referred to as IF ELSE or IF THEN ELSE function. The syntax of the MySQL IF function is as follows: IF(expr,if_true_expr,if_false_expr) Code language: SQL (Structured Query Language) (sql)
30 sty 2019 · mysql> SET @Shelly_id := 0; Query OK, 0 rows affected (0.00 sec) mysql> SELECT id INTO @Shelly_id FROM names WHERE first_name = 'Shelly'; Query OK, 1 row affected (0.10 sec) When calling the IF() function, you provide it 3 arguments (or expressions). Let’s see it in action then go over how it works.
