In MySQL5.5 (or an older version of MySQL5.1), only one column of fields in a table of the timestamp type can have the automatic insertion time and update time, or only one column of fields can have the automatic insertion time, another field Column cannot
In MySQL5.5 (or an older version of MySQL5.1), only one column of fields in a table of the timestamp type can have the automatic insertion time and update time, or only one column of fields can have the automatic insertion time, another field Column cannot
In MySQL5.5 (or an older version of MySQL5.1), only one column of fields in a table of the timestamp type can have the automatic insertion time and update time, or only one column of fields can have the automatic insertion time, the website space, and the other field Column cannot have an automatic update time.
However, from MySQL5.6, the traditional concept is overturned. The Hong Kong server and the Hong Kong virtual host can all use the above conditions, and the datetime type also has the timestamp type function.
The following is a demo:
This is MySQL5.5 (only one column of fields in the timestamp type can have the automatic insertion time and Update Time ):
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This is MySQL5.6 (multiple columns in a timestamp table can have automatic insertion time and Update Time ):
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This is MySQL5.5 (only one column of fields can have an automatic insertion time, and the other column of fields cannot have an automatic update time)
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This is from MySQL5.6 (one column of fields has an automatic insertion time, and the other column of fields can also have an automatic update time)
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MySQL5.6 (the datetime type also has the timestamp type function)
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Reference manual:
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