Datagridview database not updating
Using bind variables also improves query performance in the database, eliminates the need for special handling of literal quotation marks in the input, and protects against SQL injection attacks.
I spent hours and hours trying to find this piece of information.
We can easily contrive for an “updates” table to exist by creating a temporary table and populating it.
It is relatively straightforward to populate a table with multiple rows with just one query (or at least, far fewer queries than the number of rows desired).
“value_columns” specifies the columns which will be updated (using SET). The second element provides the value to be SET in the column specified by “value_columns”.
In this case, will spot that the target values are all 1200, and will effect the desired changes using a single UPDATE statement as described above.