func setTimestampDefaultValue(c *column.Col, hasDefaultValue bool, setOnUpdateNow bool) {
if hasDefaultValue {
return
}
// For timestamp Col, if is not set default value or not set null, use current timestamp.
if mysql.HasTimestampFlag(c.Flag) && mysql.HasNotNullFlag(c.Flag) {
if setOnUpdateNow {
c.DefaultValue = expressions.ZeroTimestamp
} else {
c.DefaultValue = expressions.CurrentTimestamp
}
}
}
