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  1. stackoverflow.com › questions › 17265522sql - Conditional UPDATE in MySQL - Stack Overflow

    23 cze 2013 · I know I'm a little late to this, but I think an easier to read solution would be to use the IF () function in MySQL: UPDATE relation. SET name1 = IF(userid1 = 3, 'jack', name1), name2 = IF(userid2 = 3, 'jack', name2) WHERE (userid1 = 3 AND userid2 = 4) OR (userid1 = 4 AND userid2 = 3);

  2. dba.stackexchange.com › questions › 36747IF NOT NULL then UPDATE else keep the value of the field

    I tried to find some solution and something like the following query seems to be the solution but I can't get it to work: UPDATE DeviceAttribute. SET Details = CASE Name. WHEN 'Accessories' IS NOT NULL THEN @Accessories. WHEN 'Description' IS NOT NULL THEN @Description.

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

    Java MySQL – UPDATE Row. 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. Prerequisites. MySQL installed and running

  4. 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:

  5. www.w3schools.com › mysql › mysql_updateMySQL UPDATE Statement - W3Schools

    The MySQL UPDATE Statement. The UPDATE statement is used to modify the existing records in a table. UPDATE Syntax. UPDATE table_name. SET column1 = value1, column2 = value2, ... WHERE condition; Note: Be careful when updating records in a table! Notice the . WHERE clause in the UPDATE statement.

  6. alvinalexander.com › java › java-mysql-update-query-exampleA Java MySQL UPDATE example - alvinalexander.com

    30 wrz 2019 · Create a Java Connection to our MySQL database. Create a SQL UPDATE statement, using the Java PreparedStatement syntax. Set the fields on our Java PreparedStatement object. Execute a Java PreparedStatement. Close our Java database connection. Catch any exceptions that may come up during the process. I've tried to document the following Java ...

  7. dba.stackexchange.com › questions › 306090How to check if update query was executed or not in MySQL?

    14 sty 2022 · I have an update query in MySQL and I want to return true or false based on whether my update query was executed or not. Is there any way we can find whether the update query is executed? UPDATE table SET table.name = "Anthony" WHERE table.id = 3; IF (queryUpdated) THEN SELECT 1 AS updated; ELSE SELECT 0 AS updated; END IF;

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