我想从我的数据库表中获得列的总和。但我只得到0.00。我的代码是: $total_income_query = $db->prepare("select sum(credit) from accounts WHERE STR_TO_DATE(date, '%d/%m/%Y') BETWEEN STR_TO_DATE(:startDate, '%d/%m/%Y') AND STR_TO_DATE(:
当添加了一套义务转化为使用WSO2的XML Web编辑器在OASIS XACML版本3语法的说明所述现有的XACML策略中,WSO2编辑器引发以下错误: Entitlement policy is not updated. Error is :Invalid Entitlement Policy. Policy is not valid according to XACML schema
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