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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.
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.
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.
This technique is useful if you want to work on MySQL data in Excel and update changes, or if you have a whole spreadsheet you want to import into MySQL. In this example, you will use the Orders table; however, the same process will work for any table that can be retrieved by the CData Excel Add-In.
1) Like the first example, layout your data into columns. 2) Double click into the next blank column beside you’re first row and insert the following formula. = “update table_name set column_value_to_update = ‘” & C2 & “‘ where column_primaryKey = ‘” & A2 & “‘;”
UPDATE Table. The following SQL statement updates the first customer (CustomerID = 1) with a new contact person and a new city.
First, specify the name of the table that you want to update data after the UPDATE keyword. Second, specify which column you want to update and the new value in the SET clause.
