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If you will not use all of the rows in the staging table, you can filter the DELETE and INSERT statements by using a WHERE clause to leave out rows that are not actually changing.However, if most of the rows in the staging table will not participate in the merge, we recommend performing an UPDATE and an INSERT in separate steps, as described later in this section.Then I have a window with a button box that calls a function that mirrors the Y-coordinates. When I push the button, the command works, but just for a split second, before the coordinates are turned back to their initial values. I'd love to stand corrected and find an easier way!
For example, in File B, we see that the 2nd row where last name is "Sub" and first name is "Stan" matches the 3rd row in File A where last name is "Sub" and first name is "Stan." As a result, I will update the Med_Prof number in File A with the value 11.Using Field API, you've already created a new field and it works great. The original schema, using hook_field_schema(): If you want to update a custom field, say to change the precision of the underlying column (or columns) from single to double, you often face the problem of not knowing what its associated table and column names are, as they're based on the machine name as entered by the user in the "Manage Fields" section of the entity in question.