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請問各位怎樣檢查一字段值是否為 null
来源: 互联网 发布时间:2015-03-13
本文导语: | first call one of the getXXX methods on a column to try to read its value and then call the method wasNull to see if the value read was SQL NULL
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first call one of the getXXX methods on a column to try to read its value and then call the method wasNull to see if the value read was SQL NULL