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Utilize the keyword DEFAULT to set a column explicitly to its default benefit. This makes it simpler to compose INSERT statements that assign values to all but several columns, as it enables you to steer clear of crafting an incomplete VALUES record that does not include a price for each column during the desk. Or else, you must give the listing of column names akin to Just about every price within the VALUES record.
Inserting NULL right into a column which has been declared NOT NULL. For several-row INSERT statements or INSERT INTO ... Find statements, the column is about for the implicit default price for that column data variety. This really is 0 for numeric types, the empty string ('') for string types, as well as the “zero” worth for day and time sorts.
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Notice Both of these functions usually do not always behave identically. The behavior of INSERT statements with regard to AUTO_INCREMENT columns is mentioned additional in Portion 12.
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