您好我有以下查询,但它仍然给我指定不给我的结果。这有什么不对吗?
select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%180211%' and taxonomic_units.tsn not in ('180212') order by rand() limit 1
select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%180210%' and taxonomic_units.tsn not in ('180212,573165') order by rand() limit 1
select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%180130%' and taxonomic_units.tsn not in ('180212,573165,573165') order by rand() limit 1
select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%179913%' and taxonomic_units.tsn not in ('180212,573165,573165,585192') order by rand() limit 1
select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id from hierarchy left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn where taxonomic_units.rank_id = 220 and hierarchy.hierarchy_string LIKE '%158852%' and taxonomic_units.tsn not in ('180212,573165,573165,585192,624896') order by rand() limit 1
这里是重复的结果,我不在声明中假设过滤掉那些,但它没有。
0 180212
1 573165
2 573165
3 632899
4 632141
5 647171
答案 0 :(得分:0)
使用此查询:
select taxonomic_units.tsn, hierarchy.hierarchy_string, hierarchy.TSN, taxonomic_units.rank_id
from hierarchy
left join taxonomic_units on hierarchy.TSN = taxonomic_units.tsn
where taxonomic_units.rank_id = 220
and hierarchy.hierarchy_string LIKE '%158852%'
and taxonomic_units.tsn not in ('180212','573165','573165','585192','624896')
order by rand() limit 1
您需要在所有值上添加'
,因为它们是不同的值。而且你在开始时和最后都给出了它作为一个单独的字符串。