select count(*)
from(
select distinct bianhao,fenshu,ceshidate from pscj,grziliao where (pscj.jihao=grziliao.jihao) and ((pscj.jihao='姚兰香') or (grziliao.xingming='姚兰香')) and ((pscj.kemu='1') or (pscj.kemu='英语'))
) AA
from(
select distinct bianhao,fenshu,ceshidate from pscj,grziliao where (pscj.jihao=grziliao.jihao) and ((pscj.jihao='姚兰香') or (grziliao.xingming='姚兰香')) and ((pscj.kemu='1') or (pscj.kemu='英语'))
) AA
解决方案 »
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