When dapperPlus batch modify data is used, the type of a column of a decimal tip out of the range, the actual data is less than the value of 1000 and with no decimal, split the batch modify data, a a modified, also called bulk changes there is no problem, the same data is no problem, while new behind all the data to retain two decimal places, such as 22.00, after a decimal bulk changes was no problem, have a great god know what reason is this? The database is mysql