我在我的奇克勒德堡(申请日期)和当我处理以下问题时,就产生了两栏关键内容:
INSERT INTO `facebook_application_shares` (`user_id`, `app_id`, `dated`, `stats`) VALUES ( 80 , 269456199802533 , 2012-04-24 , 0 )
我有以下错误——即使该数字是269456199802533,而不是2147483647。
Duplicate entry 2147483647-2012-04-24 for key 1
并且,如果对实际的折价表进行核对,价值实际上是“2147483647”
我对此感到非常困惑。
2147483647, or 0x7FFFFFFF, is the greatest number MySQL is able to store in an INT SIGNED column (which you app_id seems to be). Greater values just get truncated to it.
Make your app_id a BIGINT UNSIGNED.
请注意,INT(100)仍然是4-bit integer, with an Options hint to an application <>> 不超过100 。
This optional display width may be used by applications to display integer values having a width less than the width specified for the column by left-padding them with spaces. (That is, this width is present in the metadata returned with result sets. Whether it is used or not is up to the application.)
它无法真正储存<代码>googol - 1。
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