mysql，innodb设置，可更快地执行查询

Question

I have 4 large table and im trying to execute sql query on it. The query is taking much time to execute so , i want to reduce the execution time for better performance and i'm struggling with this so i need help

i'm using mysql 5.7.8 in linux os, 12 GB RAM

*This is my.cnf config * my.cnf file

 [mysqld]    
innodb_buffer_pool_size=10G     
innodb_log_buffer_size=2G    
innodb_buffer_pool_instances=16    
innodb_thread_concurrency=0    
innodb_flush_log_at_trx_commit=0    
sync_binlog=0    
innodb_flush_method=O_DIRECT    
skip_name_resolve    
innodb_io_capacity=1000    
innodb_io_capacity_max=3000    
innodb_buffer_pool_dump_at_shutdown=ON    
innodb_buffer_pool_load_at_startup=ON    
query_cache_type = 1    
query_cache_size = 256M    
innodb_read_io_threads=8    
innodb_write_io_threads=4

Answer 1

Nothing wrong with status vars, very low activity.
Try to add composite index (isCancel, User) .
If the query will remain slow, than delete this index and try to add new one (isCancel, User, Quarter, Year, ClaimType, Units, Amount) that will allow to get all data from index for this query.