【遇到的问题:问题现象及影响】SQL执行缓慢,查询计划是否来自绑定。期望按“SQL 模板 ID”定位到mysql.bind_info表对应的记录,并根据 SQL Digest 删除绑定。
问题:不知道“SQL模板ID” 对应tidb元数据(INFORMATION_SCHEMA.COLUMNS)中的哪个表哪个字段?
关键字匹配未找到对应对象:
select * from INFORMATION_SCHEMA.COLUMNS where table_schema in (‘mysql’,‘INFORMATION_SCHEMA’,‘PERFORMANCE_SCHEMA’) and column_name like ‘%digest%’
union
select * from INFORMATION_SCHEMA.COLUMNS where table_schema in (‘mysql’,‘INFORMATION_SCHEMA’,‘PERFORMANCE_SCHEMA’) and column_name like ‘%plan%’
union
select * from INFORMATION_SCHEMA.COLUMNS where table_schema in (‘mysql’,‘INFORMATION_SCHEMA’,‘PERFORMANCE_SCHEMA’) and column_name like ‘%sql%id%’
order by 2,3,5
STATEMENTS_SUMMARY、CLUSTER_STATEMENTS_SUMMARY中也没有找到记录。
CLUSTER_SLOW_QUERY 找到了
select * from INFORMATION_SCHEMA.CLUSTER_SLOW_QUERY where Digest =‘865931b3387f3bceae484b8033685d69bfc9d3660dc4232e7d674cfe507a210f’;