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insert question value
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| 1. | Do nothing: No action will be taken, for an update operation this means that the old value will be kept. For an insert operation, the NULL value will be used if there is no default value for the column. Otherwise, the default value will be used.
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| 2. | Use NULL: The NULL value will be used.
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| 3. | Use ___: You can specify what value will be used.
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