BIGINT 上限範囲は2の63の累乗-1:
9,223,372,036,854,775,807 -- upper range of BIGINT
15,723,311,803,489,129,744 -- converted "DA346CC793AD1510" value
BIGINTはそのような値を保存できず、単にオーバーフローします:
9,223,372,036,854,775,807 -> (overflow) -> starting from the lowest value (-9,223,372,036,854,775,808) + (15,723,311,803,489,129,744 - 9,223,372,036,854,775,807) -> -2,723,432,270,220,421,872