mysql-5.6

I'm learning about MySQL performance with a pet project consisting of ~2million rows + ~600k rows (two MyISAM tables). A range query using BETWEEN on two INT(10) indexed columns, LIMITed to 1 returned result takes about 160ms (including an INNER JOIN). I figure my configuration isn't optimised and am looking for some advice on how to either diagnose, or perhaps "common configuration". I created a gist containing both tables, the query and the contents of my.cnf. I created the b-tree index after inserting all data which was imported from a CSV file from MaxMinds open database . I tried two

I'm running MySQL 5.6 (64-bit) on Windows 7. I'm testing a DB recently upgraded from MySQL 5.0 on 32-bit Windows 7. (I also copied my.ini, with a few changes) I'm finding that it takes a very long time to establish a connection (on the order of 1 second). As an example, I created a very simple SQL script: select 1 as n; I then ran this in a batch file 10 times which took 10 seconds to complete: mysql -h localhost -u root -D myschema 0< myscript.sql (Yes, there is no password here, this is a test DB listening only to 127.0.0.1) Anyone have an idea why this is so very slow? (See my.ini below)

In MySQL 5.6.22 (specifically running on Amazon RDS) I once had a fulltext index on a table. I have since dropped that index in favor of using sphinxsearch. There are no more fulltext indexes on any of the tables on the database. When I try to now perform an online DDL such as adding a tinyint column to a table with LOCK=NONE I get this error: InnoDB presently supports one FULLTEXT index creation at a time. Try LOCK=SHARED. But, there are no fulltext indexes anywhere. I've even tried creating a read-replica in Amazon in hopes that the rebuilding of the database would fix that and I get the

While editing some queries to add alternatives for columns without values, I accidentally wrote something like this (here is the simplyfied version): SELECT id, (SELECT name) FROM t To my surprise, MySQL didn't throw any error, but completed the query giving my expected results (the name column values). I tried to find any documentation about it, but with no success. Is this SQL standard or a MySQL specialty? Can I be sure that the result of this syntax is really the column value from the same (outer) table? The extended version would be like this: SELECT id, (SELECT name FROM t AS t1 where t1

I have a docker container running MySQL-5.5 with host data volume. I am upgrading my container to MySQL-5.6. I am starting a new container with the same host volume. MySQL was crashing in the container due to the crash of mysql.user table. [ERROR] Fatal error: Can't open and lock privilege tables: Incorrect key file for table 'user'; try to repair it 160523 12:04:13 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended I tried the following to fix that: root@container# mysqld --skip-grant-tables; root@container# mysql -uroot -ppassword mysql> repair table user USE_FRM; +-----------

When I try to execute the following SQL in MySQL , I'm getting error: SQL: SQL = "CREATE TABLE Ranges ("; SQL += "ID varchar(20) NOT NULL, "; SQL += "Descriptions longtext NULL, "; SQL += "Version_Number int NULL, "; SQL += "Row_Updated bigint NULL, "; SQL += "Last_Updated datetime NULL, "; SQL += "XML longtext NULL, "; SQL += "PRIMARY KEY (ID)"; SQL += ") " + "TYPE = InnoDB"; Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near "TYPE = InnoDB" But if I remove "TYPE = InnoDB" , then the query works fine.