… After running an analyze on a table with 11M rows I’ve seen cardinality range from 19 to …on one column and using order by on another column. do i need to add the index on column using order…may apply, for example you may benefit to convert BETWEEN into IN-ranges in some cases for better index usage….

…employees/salaries, id 18, flags 1, columns 7, indexes 2, appr.rows 2844513 [...] INDEX: name PRIMARY, id … To help us in the task of converting the schema definition to a C header… INFILE ‘/root/recovery-tool/data/salaries.recovery’ REPLACE INTO TABLE `salaries` FIELDS TERMINATED BY ‘\t’ OPTIONALLY …

….  Consider the following 3 tables, each one with a single row inserted into it: SET FOREIGN_KEY_CHECKS=0; create table dos1… we were expecting. Whatever the reason, we decide to convert these columns to be ASCII.  We might assume that since the underlying…=0; Query OK, 0 rows affected (0.00 sec) (root@localhost) [oops4]> alter table dos1 change column fkto2 fkto2 char(32) character…

… script to convert SQL to the Flexviews API (see convert.php below…… AS SELECT” and/or “INSERT INTO db.schema … AS SELECT” …every MV gets a special column `mview$pk` which is …from order_lines\G *************************** 1. row *************************** cnt: 155187034 1 row in set (32.03…