2010年2月25日 · update uno set col1=d.col1,col2=d.col2 from uno inner join dos d on uid=did where [sql]='cool' select * from uno select * from dos If the ID column name is the same in both tables then just put the table name before the table to be updated and use an alias for the selected table, i.e.:

2017年5月21日 · I have a SQL server table in which there are 2 columns that I want to update either of their values according to a flag sent to the stored procedure along with the new value, something like: UPDAT...

2015年10月19日 · My answer uses the case keyword, and applies to when you are trying to run an update for a list of key-value pairs (not when you are trying to update a bunch of rows to a single value). Normally I'd just run an update query and join the relevant tables, but I am using SQLite rather than MySQL and SQLite doesn't support joined update queries as ...

update ud u inner join sale s on u.id = s.udid set u.assid = s.assid SQL Server: update u set u.assid = s.assid from ud u inner join sale s on u.id = s.udid PostgreSQL: update ud set assid = s.assid from sale s where ud.id = s.udid; Note that the target table must not be repeated in the FROM clause for Postgres.

In SQL Server I usually use the same structured update as the one you've shown. But in this particular case the FROM part could be a bit simpler: just FROM table2 WHERE table1.id = table2.id , and the aliases on the left side of each assignment could be dropped.

2022年12月21日 · update mytable t set z = ( with comp as ( select b.*, 42 as computed from mytable t where bs_id = 1 ) select c.computed from comp c where c.id = t.id ) Good luck, GJ

UPDATE t1 SET flag = 0 FROM yourTable t1 INNER JOIN ( SELECT ID FROM yourTable GROUP BY ID HAVING SUM(CASE WHEN action = 'B' THEN 1 ELSE 0 END) > 1 ) t2 ON t1.ID = t2.ID Note that this subquery is not correlated, meaning SQL Server will only execute it once for the entire UPDATE .

2013年6月28日 · UPDATE dbo.xxx SET Value = REPLACE(Value, '123', '') WHERE ID <=4 If the column to replace is type text or ntext you need to cast it to nvarchar UPDATE dbo.xxx SET Value = REPLACE(CAST(Value as nVarchar(4000)), '123', '') WHERE ID <=4

2014年10月10日 · UPDATE MyTable SET MyColumn = UPPER(MyColumn) WHERE MyColumn != UPPER(MyColumn) COLLATE Latin1_General_CS_AS A Bit About Collation Cases sensitivity is based on your collation settings, and is typically case insensitive by default.

2012年5月3日 · How to update order column Count value Try UPDATE order SET Order_Count = Order_Count + 100 WHERE Order_ID = '1234'