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  1. stackoverflow.com › questions › 2177543MySQL - Using If Then Else in MySQL UPDATE or SELECT Queries

    1 lut 2010 · Here's a query to update a table based on a comparison of another table. If record is not found in tableB, it will update the "active" value to "n". If it's found, will set the value to NULL. UPDATE tableA LEFT JOIN tableB ON tableA.id = tableB.id SET active = IF(tableB.id IS NULL, 'n', NULL)"; Hope this helps someone else.

  2. www.geeksforgeeks.org › mysql-if-if-then-if-then-else-and-if-then-elseif-elseIF, IF-THEN, IF-THEN-ELSE and IF-THEN-ELSEIF-ELSE Statement -...

    21 sie 2024 · MySQL offers conditional control flow with IF statements, allowing us to execute blocks of SQL code depending on whether a condition is true or false. In this article, We will learn about What is Decision-Making in MySQL with different statements along with examples and so on.

  3. www.tutorialkart.com › java › java-mysql-update-rowsJava MySQL - UPDATE Row(s) - Detailed Steps - Tutorial Kart

    In this tutorial, we’ll go through updating rows in a MySQL table using Java. We will cover various examples, including updating a single row, updating multiple rows based on a condition, and updating multiple columns. Each example will include detailed steps and code snippets.

  4. www.geeksforgeeks.org › loops-in-mysqlLoops in MySQL - GeeksforGeeks

    18 wrz 2024 · In MySQL, loops are powerful constructs used to repeatedly execute a block of code or a set of statements until a specified condition is satisfied. MySQL supports various types of loop constructs, including the basic LOOP, WHILE and REPEAT loops along with flow control statements such as IF, CASE, ITERATE and LEAVE.

  5. www.mysqltutorial.org › mysql-stored-procedure › mysql-if-statementMySQL IF Statement - MySQL Tutorial

    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. Use IF...THEN...ELSEIF...ELSE statement to evaluate multiple conditions sequentially and execute corresponding blocks of statements based on the first true condition, with an optional ...

  6. dirask.com › posts › MySQL-UPDATE-query-with-IF-condition-conditional-update-pOv4JDMySQL - UPDATE query with IF condition (conditional update)

    In this article, we would like to show you UPDATE query with IF condition in MySQL. Quick solution: UPDATE `table_name` SET `column_name` = IF(condition , if_true, if_false); Practical example. To show UPDATE query with IF condition, we will use the following users table:

  7. www.w3schools.com › SQl › func_mysql_ifMySQL IF() Function - W3Schools

    Definition and Usage. The IF () function returns a value if a condition is TRUE, or another value if a condition is FALSE. Syntax. IF (condition, value_if_true, value_if_false) Parameter Values. Technical Details. More Examples. Example. Return 5 if the condition is TRUE, or 10 if the condition is FALSE: SELECT IF(500<1000, 5, 10);

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