统计工人月产量
已知数据表:产量表,
表中字段:员工编,员工,日产量,日期
1,小张,12,2007-01-01
1,小张,15,2007-01-02
1,小张,16,2007-02-03
2,小李,12,2007-01-01
2,小李,15,2007-02-02
2,小李,16,2007-01-03
3,小张,12,2007-02-01
3,小张,15,2007-01-02
3,小张,16,2007-02-03
4,小刘,12,2007-01-01
4,小刘,15,2007-02-02
4,小刘,16,2007-01-03
求小张,小李,小刘各个月份的产量
数据库access,开发语言C#
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