Updating reference tables

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The following INSERT INTO statement inserts all the values in the Customer ID, Last Name, and First Name fields from the tbl Old Customers table into the corresponding fields in the tbl Customers table.

To modify the data that is currently in a table, you use the UPDATE statement, which is commonly referred to as an update query.

The implicit default value is tables for which there are foreign key constraints, the My SQL optimizer might process tables in an order that differs from that of their parent/child relationship. Instead, update a single table and rely on the provides to cause the other tables to be modified accordingly. COLUMN2 IS NULLAn outerjoin is performed based on the equijoin condition.

There are essentially two methods for adding records to a table.

The first is to add one record at a time; the second is to add many records at a time.

In both cases, you use the SQL statement INSERT INTO to accomplish the task.

You can create cross-references to items such as headings, footnotes, bookmarks, captions, and numbered paragraphs.

To add one record to a table, you must use the field list to define which fields to put the data in, and then you must supply the data itself in a value list. For example, the following statement will insert the values "1", "Kelly", and "Jill" into the Customer ID, Last Name, and First Name fields, respectively.If you set a column to the value it currently has, My SQL notices this and does not update it.If you update a column that has been declared , an error occurs if strict SQL mode is enabled; otherwise, the column is set to the implicit default value for the column data type and the warning count is incremented.NOTE: You must be using automated caption numbering, Word’s heading styles (mostly), and automated cross-references (x-refs) for these steps to work.If you have a document with several sections and automated table/figure captions and x-refs to these, you might wonder how you can update these numbers etc.

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