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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
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:
26 lut 2014 · 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). Perhaps you could adapt this solution to your own situation.
How to connect to a MySQL database from Excel, fetch the latest data from it, and work with that data inside your spreadsheets in Excel. This tutorial is step-by-step and shows you how to do everything, from downloading the ODBC drivers (explained in the tutorial) to importing and transforming the data from specific tables in MySQL.
Creating Update Statements. A similar technique can be used to create ‘Update’ statements. In this example we are updating the ‘rrp’ field of the ‘stock’ table for a particular ‘partNo’.
18 lut 2018 · Use either of the methods above for the table B update, but do both tables separately: UPDATE A SET A.col1 = 'abc', A.col2 = 'xyz' WHERE A.col3 = '1' ; UPDATE B INNER JOIN ( SELECT 'a' AS col1, 'x' AS col2, '1' AS col3 UNION ALL SELECT 'b', 'y', '2' UNION ALL SELECT 'c', 'z', '3' ) AS fltr ON B.col3 = fltr.col3 SET B.col1 = fltr.col1, B.col2 ...
17 lis 2010 · I want to add a row to a database table, but if a row exists with the same unique key I want to update the row. For example: INSERT INTO table_name (ID, NAME, AGE) VALUES(1, "A", 19);
