security-admin/db/mysql/patches/074-create-index-for-x_trx_log.sql

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--     http://www.apache.org/licenses/LICENSE-2.0
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drop procedure if exists create_index_for_x_trx_log;

delimiter ;;
create procedure create_index_for_x_trx_log() begin
if exists (SELECT * FROM INFORMATION_SCHEMA.STATISTICS WHERE table_schema=DATABASE() AND table_name='x_trx_log') then
  if not exists (SELECT * FROM INFORMATION_SCHEMA.STATISTICS WHERE table_schema=DATABASE() AND table_name='x_trx_log' AND index_name='x_trx_log_IDX_trx_id') then
    CREATE INDEX x_trx_log_IDX_trx_id ON x_trx_log(trx_id);
  end if;
end if;
end;;

delimiter ;
call create_index_for_x_trx_log();