Re: Update multiple columns with single query Rational Rabbit January 22, 2011 05:57PM Re: Update multiple columns with single query Rick James January 22, 2011 11:38PM Sorry, you can't reply to this topic. It has been closed.
Adding a column to a large (100 million rows) table with default constraint adding a extra column in a pivot table created uisng T-SQL Pivot Table query Adding a partition scheme to an existing table. Adding a Value to a 'date' Column caused an overflow?? Adding Column to existing tab...
Upserts multiple records into the database in a single query, when no unique key is given it will render an error ActiveRecord::RecordNotUnique if there are any duplicate rows. users = [User.new(name: "foo"), User.new(name: "bar")] User.where(active: true).bulk_upsert(users, unique...
mysql>updatestudent2setsid=sid+1orderbysiddesc; ##默认是升序,desc表示降序 Query OK,2rowsaffected (0.06sec)Rowsmatched:2Changed:2Warnings:0##使用limit限定行数,一般和orderby配合使用 mysql>updatestudent2setsname='sss'orderbyid limit2; 2.2 多表修改 ##多表修改(表之间通过where条件进行join操作) my...
In the case where the most recent FETCH statement returned multiple rows of data (but not as a rowset), this position would be on the last row of data that was returned. If the cursor is positioned on a rowset, all rows corresponding to the current rowset are updated. The cursor ...
(1, 1);INSERT01postgres=# INSERT INTO public.t2 VALUES (1, 1);INSERT01postgres=# INSERT INTO public.t2 VALUES (1, 2);INSERT01postgres=# UPDATE t1 SET t1.b = t2.b FROM t2 WHERE t1.a = t2.a;ERROR: Non-deterministicUPDATEDETAIL: multiple updatestoarowbya single queryforcolumnstore...
A positioned update using a WHERE CURRENT OF clause updates the single row at the current position of the cursor. This can be more accurate than a searched update that uses a WHERE <search_condition> clause to qualify the rows to be updated. A searched update modifies multiple rows when the...
Database backends like Postgresql support doing multiple value update for the same field in different rows using a single update query. Please see this sample below: http://stackoverflow.com/questions/18797608/update-multiple-rows-in-same-query-using-postgresql ...
This can be achieved simply by looping through all the rows in aGridView. If the row is checked for edit, then execute anUPDATEstatement or call a Stored Procedure to update the data in the database. But in this approach, if we are updating 20 records, then we are going to hit data...
UPDATE a INNER JOIN b USING (id) SET a.firstname='Pekka', a.lastname='Kuronen', b.companyname='Suomi Oy',companyaddress='Mannerheimtie 123, Helsinki Suomi' WHERE a.id=1; PB Subject Written By Posted UPDATE multiple tables with one UPDATE statement ...