Question

what is default value? How to you define it? What is the default value of column for which no default value is define? ​

Answer 1

Answer:

For date and time types other than TIMESTAMP, the default is the appropriate “zero” value for the type. For the first TIMESTAMP column in a table, the default value is the current date and time. ... For string types other than ENUM, the default value is the empty string

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