Updating table from a view in sql

Posted by / 19-Sep-2016 03:55

I can do that with the following code: In this code I updated the Toy table based on values in another table, in this case a table named New Toy Price.To accomplish that I joined the TOY table to my New Toy Price table based on the ID column.There may be times when you don’t want to manually write a bunch of UPDATE statements with different literal strings to update your table.Suppose I wanted to change all the prices of my Toys with a single UPDATE statement.By doing this I have made sure I don’t have a bogus WHERE clause on my UPDATE statement that is going to incorrectly identify rows to be updated in my table.In my examples above I only updated a single column with my UPDATE statement.

Once my SELECT statement does return the correct rows I can then copy the WHERE clause from my SELECT statement, and paste it into my UDPATE statement code.Suppose I wanted to change both the Toy Name and the Price columns.I can update multiple columns with a single UPDATE statement.You need to be careful when using the UPDATE statement with a .If you incorrectly specify your search condition you might update too many rows, or not enough rows.

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