解决方案是使用ISO / ANSI标准-安全NULL比较：
WHERE Column IS NOT DISTINCT FROM ?
WHERE Column = ? OR (Column IS NULL AND ? IS NULL)
如果您不愿意两次传递参数，则可以在FROM子句中包含它：
. . .
FROM . . . CROSS JOIN
(SELECT ? as compColumn) params
WHERE (Column = params.compColumn0 or (Column IS NULL and params.compColumn IS NULL)
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