Mysql性能优化：Like查询使用索引的情况

EXPLAIN SELECT *FROM hb_send_list WHERE hongbao_id LIKE ‘%AA1317B32755BDFC1B8036’

EXPLAIN SELECT *FROM hb_send_list WHERE hongbao_id LIKE ‘AA1317B32755BDFC1B8036%’

EXPLAIN SELECT *FROM hb_send_list WHERE hongbao_id LIKE ‘A%A1317B32755BDFC1B8036’

mysql在使用like查询，%在最前面不会用到索引，中间或最后是会用到索引的，只是越靠前扫描的行数越多

原文链接：https://blog.csdn.net/lihuang319/article/details/79985394