Updating two tables in sql

12-Feb-2020 21:22 by 8 Comments

Updating two tables in sql

You will be given questions that you need to solve.

So basically, if I was to do this programmatically (or algorithmically) its's something like that: Foreach(var item A in A) If (item A.status = 2) item A.status to 1 item = Get Date() foreach(var item B in B) if(item B. it is not possible to update multiple tables at once. ORG_ID = @ORG_ID COMMIT BEGIN TRANSACTION is not the same as BEGIN which starts a block ( used in IF for example).And I agree about the hack-i-ness of the suggested link (I might even suggest removing it).Tweet Sometimes, when searching for an answer, we end up making things too much complicated, while easy solutions are just round the corner.This is the case of a simple task like updating two related tables with just one SQL query. The first contains user names, and the second email addresses related to the first table names.Cross table update (also known as correlated update, or multiple table update) in Oracle uses non-standard SQL syntax format (non ANSI standard) to update rows in another table. Update data in table A based on two or more common columns in table B.

The differences in syntax are quite dramatic compared to other database systems like MS SQL Server or My SQL. Updates based on two or more common columns are normally used for tables where multiple columns work together as a primary key (known as composite primary key). You can then update the View which will then update the underlying tables. REF_NAME = @REF_NAME from table2 B inner join table1 A on B. So don't use END, this not a even question of good or bad practice, you might close the block you're in and find unexpected output But you are trying to affect multiple tables with an update statement that joins on multiple tables. However, updating two tables in one statement is actually possible but will need to create a View using a UNION that contains both the tables you want to update. If you omit the WHERE clause, all records in the table will be updated! The WHERE clause specifies which record(s) that should be updated.There’s probably an article from 20 years covering this.

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