| Server IP : 88.99.149.37 / Your IP : 216.73.216.141 Web Server : nginx/1.31.2 System : Linux server-88-99-149-37 6.12.0-124.56.5.el10_1.x86_64 #1 SMP PREEMPT_DYNAMIC Fri May 15 06:12:08 EDT 2026 x86_64 User : muralimurth ( 1015) PHP Version : 8.4.23 Disable Function : exec,system,passthru,shell_exec,proc_close,proc_open,dl,popen,show_source,posix_kill,posix_mkfifo,posix_getpwuid,posix_setpgid,posix_setsid,posix_setuid,posix_setgid,posix_seteuid,posix_setegid,posix_uname MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/local/mysql/mysql-test/main/ |
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drop table if exists t1; SET @@global.slow_query_log = OFF; FLUSH SLOW LOGS; SET @@global.slow_query_log = ON; create table t1 (a int); INSERT INTO t1 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); select * from t1 where a<3; a 0 1 2 drop table t1; FLUSH SLOW LOGS; # explain: id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra # explain: 1 INSERT t1 ALL NULL NULL NULL NULL NULL NULL 100.00 100.00 NULL # explain: id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra # explain: 1 SIMPLE t1 ALL NULL NULL NULL NULL 10 10.00 100.00 30.00 Using where # explain: id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra # explain: 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL NULL No tables used