两张表关联查询 请各位大佬帮忙看一下怎么写sql

Question

• 1. 假设有AB两张表 A表有a b,两个字段，B表有a c两个字段，查出a不同，b=1,c=1的数据 。各位大佬帮看下怎么写sql

     from dw_pdata_east.a_rp_east_dghqckfhzmxjl hq
     inner join
     dw_pdata_east.a_rp_east_grhqckfhz A
     on hq.hqckzh=A.hqckzh
     and A.bzjzhbz = '是'
     where hq.hxjyrq = IN_CJRQ and hq.jdbz='贷' and hq.dfhm not in (
     select zhmc from dw_pdata_east.a_rp_east_dghqckfhz B
     inner join dw_pdata_east.a_rp_east_dghqckfhzmxjl C
     on B.zhmc =C.hqckzh );
     是写存储过程。。。。那种sql写了不行，上面是我写的，我把我写的条件贴出来，大佬们看一下 后面我改成这样了

     from dw_pdata_east.a_rp_east_dgdqckfhzmxjl dq
     inner join dw_pdata_east.a_rp_east_dgdqckfhzmx A
     on dq.dqckzh =A.dqckzh
     where dq.hxjyrq = IN_CJRQ and dq.jdbz='贷' and dq.mxkmmc='保证金' and dq.dfhm <> A.zhmc ;

Answer 1

select a,b,c from A,B where A.b=B.c=1 and A.a<>B.a;