Mysql updating multiple tables

So is structured so that approaches which are generic across different SQL databases are expressed in a base class, and approaches which only work for specific SQL databases are expressed in a subclass.

This is the intention of UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1200 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1200 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; “key_columns” specifies the columns which will be used to identify rows which need to be updated (using WHERE). The first element provides the value of the column (specified by “key_columns”) to identify the row to be updated.and we could persuade the database server to apply those updates to the target table?This is in fact entirely possible in many database systems.OK, that’s great, we have some theoretical approaches for reducing the number of queries, now what?The code required to implement the above logic is sufficiently fiddly that we would probably not want to have to repeat it.

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