The reason is the books I bought don't have a due date! I don't need to return those books.
原因是我买的书没有到期日！我不需要还那些书。
This XPath expression is used with other SQL in the stored procedure to return the sum of the payable amount due on the date supplied as input.
这个XPath表达式与存储过程中的其他SQL相结合，返回在输入的日期应该支付的总金额。
This XPath expression is used with other SQL in the stored procedure to return the sum of the payable amount due on the date supplied as input.
这个XPath表达式与存储过程中的其他SQL相结合，返回在输入的日期应该支付的总金额。
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