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

   stackoverflow.com › questions › 2177543

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

   dirask.com › posts › MySQL-UPDATE-query-with-IF-condition-conditional-update-pOv4JD

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   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:

3. air-gap.com.au › creating-mysql-insert-and-update-statements-with-excelCreating MYSQL Insert and Update statements with EXCEL - Air-Gap

   air-gap.com.au › creating-mysql-insert-and-update-statements-with-excel

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   In this example we are updating the ‘rrp’ field of the ‘stock’ table for a particular ‘partNo’. The ‘partName’ column is unused in this example and is typical of what you may find in the real world, you should always update rows using the tables unique ‘Primary Key’.

4. nsiteful.com › sql-subquery-excelMySQL: Update table using subquery, Excel data

   nsiteful.com › sql-subquery-excel

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   26 lut 2014 · MySQL: Update table using subquery, Excel data. Here’s a snippet of SQL code and a procedure for updating a MySQL database table using a subquery and data from Microsoft Excel (or similar).

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

   www.w3schools.com › mysql › mysql_update

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   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. The WHERE clause specifies which record (s) that should be updated.

6. 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 -...

   www.geeksforgeeks.org › mysql-if-if-then-if-then-else-and-if-then-elseif-else

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   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.

7. blog.devart.com › mysql-if-function-and-statement-with-examplesMySQL IF Statement and Function Explanation With Examples -...

   blog.devart.com › mysql-if-function-and-statement-with-examples

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   1 cze 2022 · MySQL IF-THEN-ELSE statement. To execute statements when a condition in the IF block does not evaluate to true, you can use IF-THEN-ELSE. The syntax looks as follows: IF condition THEN statements; ELSE else-statements; END IF; If a specified condition is: true – statements between IF-THEN and ELSE will be executed; false – statements ...