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26 Απρ 2016 · As a SQL Server loyalist, I've been struggling with DB2's seeming inability to update a table with information from another table--the update with join that's so easy in SSMS. I finally discovered a workaround that functions perfectly instead: the MERGE statement.
17 Νοε 2013 · I think you need to use a derived table to accomplish this: update order_attributes set value = ( select created_by_name from( select created_by_name, oa.order_id from order_approvals oa left outer join order_attributes ot on oa.order_id = ot.order_id AND OT.ATTRIBUTE_ID = 123 and OT.ORDER_ID in (select ORDER_ID from ORDER_APPROVALS where ...
6 Σεπ 2021 · An example of when you might want to perform an UPDATE statement with a JOIN. We need to get some data set up. Let’s take the example of a business owner who uses SQL tables to keep track of their Customers, Products, and Orders. We’ll create a simple table for each entity.
3 Απρ 2013 · Here are a couple of possibilities. 1. Set the sales region to null for those customers who are not in the FIXES table. update customer as c set c.region = null where c.region not in (select oldregion from fixes) 2. Set the sales region to 99 for the customers who are not in the FIXES table.
This tutorial shows you step by step how to use the Db2 INNER JOIN clause to query data from two or more related tables.
This tutorial shows you how to use Db2 joins including inner join, left outer join, right outer join, and full outer join to combine rows from two tables.
10 Μαΐ 2017 · You can also do it with a traditional UPDATE statement: UPDATE TA SET LOGIN = ( SELECT NEWLOGIN FROM TB WHERE OLDLOGIN = TA.LOGIN ) WHERE EXISTS ( SELECT 1 FROM TB WHERE OLDLOGIN = TA.LOGIN );
