mysql 不在语句中，不工作

Question

您好，我有以下查询，但它仍然给出指定不给我的结果。这有什么问题吗？

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

这是重复的结果，我的 not in 语句本应该过滤掉这些内容，但事实并非如此。

0   180212
1   573165
2   573165
3   632899
4   632141
5   647171

Answer 1

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 '，因为这些值是不同的。并且您在开头和结尾处都将其视为单个字符串。