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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.
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).
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:
1 lis 2023 · To update a MySQL query based on a select query, you can use the UPDATE statement with a subquery. This allows you to update rows in one table based on the values returned from a select query on another table.
18 lut 2018 · You can use below one for one table if you want to update many columns of one table. UPDATE table SET col1 = CASE WHEN col3 = 'name1' THEN 'a' WHEN col3 = '2' THEN b ELSE 0 END , col2 = CASE WHEN col3 = '1' THEN 'b' WHEN col3 = 'name2' THEN 'c' ELSE '' END ;
4 lut 2020 · How To Update Your Data From Your SQL Database To Excel Automatically? It’s a 4-steps process: Connect Excel to an external data source: your SQL database. Import your SQL data...
2 cze 2016 · I'm trying to create an sql query that pulls two columns from the excel file (JobNo and CustManRef), and updates the field 3rdPartyRef from the job_new table but only where the field DocketNo from the job_dockets is equal to the JobNo column from the excel file.
