Αποτελέσματα Αναζήτησης
15 Μαρ 2010 · You can do this: UPDATE table1 SET table1.value = (SELECT table2.CODE. FROM table2 . WHERE table1.value = table2.DESC) WHERE table1.UPDATETYPE='blah'
4 Ιαν 2021 · In this article we compare how to execute updates when using a join between SQL Server, Oracle and PostgreSQL. Solution Below we will do a comparison of the different syntax used to update data when using a join.
SQL Server UPDATE JOIN syntax. To query data from related tables, you often use the join clauses, either inner join or left join. In SQL Server, you can use these join clauses in the UPDATE statement to perform a cross-table update.
26 Απρ 2017 · What I wrote for the above is this: ALTER TABLE a ADD COLUMN Material INTEGER. UPDATE a SET Material = CASE. WHEN a.Element <= 300000. THEN 80000. ELSE b.Material FROM. a JOIN b ON (a.PCOMP = b.PCOMP AND a.Ply= b.Ply) END. I am using SQLite 3.14.1.
6 Σεπ 2021 · You simply outline the column you want to update and the value you want it updated to. So, as I said, we want the ProdID value updated to the number 3. That’s an easy SET clause: UPDATE O SET O.ProdID = 3 FROM Orders AS O INNER JOIN Customers AS C ON O.CustID = C.CustID INNER JOIN Products AS P ON O.ProdID = P.ProdID WHERE O.OrderID = 2
9 Ιουν 2023 · In some database vendors (SQL Server, MySQL, PostgreSQL), you are able to use a JOIN in an UPDATE statement to update data using values in another table. The parameters are: table1: The name of the table you want to update. column: The column whose value you want to update.
21 Σεπ 2017 · update (select a.category as defaultcategory from a left join b on b.xx_id = a.xx_id left join c on c.zz_id = b.zz_id left join d on d.yy_id = c.yy_id where d.yy_id = ‘123’) dc set dc.defaultcategory = (select kk_id from cc where name = 'NNN') - create table statements for all your tables.
