Mysql vs sql express server (HEX -> bigint og bigint -> HEX konvertering)

STORT øvre område er 2 til effekt 63 - 1:

 9,223,372,036,854,775,807   -- upper range of BIGINT
15,723,311,803,489,129,744   -- converted "DA346CC793AD1510" value

BIGINT kan ikke gemme en sådan værdi og flyder simpelthen over:

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