目录1.LAG()函数Demo：Demo：基础用法Demo：带偏移量的LAG()函数Demo：带默认值的LAG()函数Demo：LAG()函数，比较每一天的销售额与前一天的销售额的差异。2.LEAD()函数Demo：基础用法Demo：带偏移量的LEAD()函数Demo
I want to access a inventory system which is accessible through webservice, What is the best way to integrate, I thought of directly expose the entity facade as a web service using @WebSerive it\'s po
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