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15 Νοε 2010 · The reference documentation for the UPDATE statement on DB2 LUW 9.7 gives the following example: UPDATE (SELECT EMPNO, SALARY, COMM, AVG(SALARY) OVER (PARTITION BY WORKDEPT), AVG(COMM) OVER (PARTITION BY WORKDEPT) FROM EMPLOYEE E) AS E(EMPNO, SALARY, COMM, AVGSAL, AVGCOMM) SET (SALARY, COMM) = (AVGSAL, AVGCOMM) WHERE EMPNO = '000120'
The UPDATE statement updates the values of specified columns in rows of a table, view or nickname, or the underlying tables, nicknames, or views of the specified fullselect. Updating a row of a view updates a row of its base table, if no INSTEAD OF trigger is defined for the update operation on this view.
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 );
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.
This tutorial shows you step by step how to use the Db2 INNER JOIN clause to query data from two or more related tables.
To update data in a table or view, use the UPDATE statement. With the UPDATE statement, you can change the value of one or more columns in each row that meets the search condition of the WHERE clause.
20 Μαΐ 2012 · Use a merge query to update the table, instead of join. DB2 does not accept join in update query for that purpose, you have to use a merge: MERGE INTO TABLE_NAME1 A USING (SELECT COL1, COL2 FROM TABLE_NAME2) B ON A.COL1 = B.COL2 WHEN MATCHED AND A.COL1 = B.COL2 THEN UPDATE SET A.COL1 = B.COL2;
