SQL 两个表联合查询记录中取最大值表1OnDate ITEM_ID MZZYH NRUL2012-12-25 17:20:00 1 5 1.22012-12-25 15:00:20 2 5 1.32012-12-25 16:00:00 3 5 1.42012-12-25 10:50:23 1 5 12012-12-25 10:10:09 2 5 12012-12-25 10:10:10 3 5 1表2ITEM_ID ITEM_NA
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![SQL 两个表联合查询记录中取最大值表1OnDate ITEM_ID MZZYH NRUL2012-12-25 17:20:00 1 5 1.22012-12-25 15:00:20 2 5 1.32012-12-25 16:00:00 3 5 1.42012-12-25 10:50:23 1 5 12012-12-25 10:10:09 2 5 12012-12-25 10:10:10 3 5 1表2ITEM_ID ITEM_NA](/uploads/image/z/11640075-51-5.jpg?t=SQL+%E4%B8%A4%E4%B8%AA%E8%A1%A8%E8%81%94%E5%90%88%E6%9F%A5%E8%AF%A2%E8%AE%B0%E5%BD%95%E4%B8%AD%E5%8F%96%E6%9C%80%E5%A4%A7%E5%80%BC%E8%A1%A81OnDate+ITEM_ID+MZZYH+NRUL2012-12-25+17%3A20%3A00+1+5+1.22012-12-25+15%3A00%3A20+2+5+1.32012-12-25+16%3A00%3A00+3+5+1.42012-12-25+10%3A50%3A23+1+5+12012-12-25+10%3A10%3A09+2+5+12012-12-25+10%3A10%3A10+3+5+1%E8%A1%A82ITEM_ID+ITEM_NA)
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