目录1、行转列函数2、判空函数3、时间函数4、建表语句1、行转列函数 odps 中行转列函数 wm_concat，将列信息转成行显示，可指定分隔符。
I\'m really new to Java and I have to create an applet for signing documents electronically. The applet will be called from an ASP.Net web page application.
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