日结时 提示数据转移失败

日结时，提示数据转移失败，不能在tb_orderdish中插入重复键的行。

delete tb_orderdish where ch_billno in (select ch_billno from tb_orderdish_tmp)  --提示tb_orderdish

delete tb_djnolist where ch_billno in (select ch_billno from tb_master_tmp)  --提示tb_djnolist

delete tb_table where ch_billno in (select ch_billno from tb_table_tmp)  --提示tb_table