Server IP : 172.67.216.182 / Your IP : 172.69.176.82 Web Server : Apache System : Linux krdc-ubuntu-s-2vcpu-4gb-amd-blr1-01.localdomain 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64 User : www ( 1000) PHP Version : 7.4.33 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /www/server/mysql/src/mysql-test/suite/sysschema/r/ |
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DESC sys.schema_redundant_indexes; Field Type Null Key Default Extra table_schema varchar(64) NO table_name varchar(64) NO redundant_index_name varchar(64) NO redundant_index_columns text YES NULL redundant_index_non_unique bigint(1) YES NULL dominant_index_name varchar(64) NO dominant_index_columns text YES NULL dominant_index_non_unique bigint(1) YES NULL subpart_exists int(1) NO 0 sql_drop_index varchar(223) YES NULL SELECT * FROM sys.schema_redundant_indexes; DESC sys.x$schema_flattened_keys; Field Type Null Key Default Extra table_schema varchar(64) NO table_name varchar(64) NO index_name varchar(64) NO non_unique bigint(1) YES NULL subpart_exists bigint(1) YES NULL index_columns text YES NULL SELECT * FROM sys.x$schema_flattened_keys; CREATE DATABASE rkey; CREATE TABLE rkey.rkey ( i INT, j INT, k INT, PRIMARY KEY (i), KEY (j), KEY (j, k), KEY (i, j, k) ); SELECT * FROM sys.schema_redundant_indexes; table_schema table_name redundant_index_name redundant_index_columns redundant_index_non_unique dominant_index_name dominant_index_columns dominant_index_non_unique subpart_exists sql_drop_index rkey rkey j j 1 j_2 j,k 1 0 ALTER TABLE `rkey`.`rkey` DROP INDEX `j` rkey rkey i i,j,k 1 PRIMARY i 0 0 ALTER TABLE `rkey`.`rkey` DROP INDEX `i` DROP DATABASE rkey;