Re: Diferencia de velocidad al migrar una tabla de MSSQL Server a MySQL
Aqui va la tabla (ya cambiada a InnoDB):
se_hc, CREATE TABLE `se_hc` (
`Emp_Codigo` int(11) DEFAULT NULL,
`HCL_CODIGO` int(11) NOT NULL,
`HCL_FECHA` datetime DEFAULT NULL,
`HCL_APPAT` char(20),
`HCL_APMAT` char(20),
`HCL_NOMBRE` char(30),
`HCL_NUMCI` mediumtext,
`HCL_SEXO` mediumtext,
`HCL_FECNAC` datetime DEFAULT NULL,
`DEP_CODIGO_RES` int(11) DEFAULT NULL,
`PRO_CODIGO_RES` int(11) DEFAULT NULL,
`MUN_CODIGO_RES` int(11) DEFAULT NULL,
`HCL_ESTCIV` varchar(1) DEFAULT NULL,
`HCL_DIRECC` mediumtext,
`HCL_TELDOM` mediumtext,
`PProCodPro` int(11) DEFAULT NULL,
`HCL_LUGTRA` mediumtext,
`HCL_DIRTRA` mediumtext,
`HCL_TELTRA` mediumtext,
`HCL_NOMFAM` mediumtext,
`HCL_TELFAM` mediumtext,
`HCL_NOMPAD` mediumtext,
`HCL_NOMMAD` mediumtext,
`HCL_CodCSB` mediumtext,
`HCL_CodSegSoc` mediumtext,
`HCL_CODFAM` int(11) DEFAULT NULL,
`DEP_CODIGO_LN` int(11) DEFAULT NULL,
`HCL_CODMEDICO` int(11) DEFAULT NULL,
`zon_codigo` int(11) DEFAULT NULL,
`HCL_USUMOD` int(11) DEFAULT NULL,
`HCL_FECMOD` datetime DEFAULT NULL,
`DEP_CODIGO_NAC` int(11) DEFAULT NULL,
`PRO_CODIGO_NAC` int(11) DEFAULT NULL,
`MUN_CODIGO_NAC` int(11) DEFAULT NULL,
`hc_alfa` varchar(1) DEFAULT NULL,
`hc_NivelEstudio` int(11) DEFAULT NULL,
`HCL_SUMI` varchar(1) DEFAULT NULL,
`HCL_SUMI_FECHA` datetime DEFAULT NULL,
`HCL_ESTADO` varchar(1) DEFAULT NULL,
`HCL_TIPODOC` int(11) DEFAULT NULL,
`hcl_migrado` varchar(1) DEFAULT NULL,
`af_codigo` int(11) DEFAULT NULL,
`af_mun_cod` int(11) DEFAULT NULL,
`fa_codificacion` mediumtext,
`hcl_Fum` datetime DEFAULT NULL,
`hcl_NroEmbarazo` int(11) DEFAULT NULL,
`idioma` int(11) DEFAULT NULL,
`idiomamaterno` int(11) DEFAULT NULL,
`autopertenencia` int(11) DEFAULT NULL,
`lugarexpedicion` int(11) DEFAULT NULL,
PRIMARY KEY (`HCL_CODIGO`),
UNIQUE KEY `hc_codigo` (`HCL_CODIGO`),
KEY `FECHA_NAC` (`HCL_FECNAC`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
Tiene muchos campos NULL pero no lo puedo cambiar (pertenece a un software en .net de otro autor).
solo importe esta tabla, por tanto no tiene enlaces a otras tablas.
---------Mis indices creados sobre los campos:
- HCL_CODIGO (creada por defecto PRIMARY - unique )
- Fecha nacimiento (indice normal porque existen duplicados pero supuestamente no debería repetirse mucho)
- NOMBRE (APPAT, APMAT, NOMBRE) INDICE QUE COMBINA 3 COLUMNAS porque es comun la busqueda por el nombre
Nota.- Tengo entendido que los indices solo ayudan en busquedas con WHERE e incluso no ayudan si la comparación es LIKE ¿es asi? )
-------------------finalmente mi nueva configucacion my.ini: (no encontre innodb_buffer_size, pero debes referirte a innodb_buffer_pool_size )
# Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is C:\mysql\data) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[wampmysqld]
port = 3306
socket = /tmp/mysql.sock
key_buffer_size = 64M
max_allowed_packet = 100M
sort_buffer_size = 2048K
net_buffer_length = 128K
read_buffer_size = 2048K
read_rnd_buffer_size = 2048K
myisam_sort_buffer_size = 128M
basedir=c:/wamp/bin/mysql/mysql5.6.17
log-error=c:/wamp/logs/mysql.log
datadir=c:/wamp/bin/mysql/mysql5.6.17/data
lc-messages-dir=c:/wamp/bin/mysql/mysql5.6.17/share
# Change your locale here !
lc-messages=fr_FR
# Avoid warning
explicit_defaults_for_timestamp = TRUE
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking
# Disable Federated by default
skip-federated
# Replication Master Server (default)
# binary logging is required for replication
#log-bin=mysql-bin
# binary logging format - mixed recommended
#binlog_format=mixed
# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1
# Replication Slave (comment out master section to use this)
# New for MySQL 5.6 if no slave
skip-slave-start
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
# MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
# start replication for the first time (even unsuccessfully, for example
# if you mistyped the password in master-password and the slave fails to
# connect), the slave will create a master.info file, and any later
# change in this file to the variables' values below will be ignored and
# overridden by the content of the master.info file, unless you shutdown
# the slave server, delete master.info and restart the slaver server.
# For that reason, you may want to leave the lines below untouched
# (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id = 2
#
# The replication master for this slave - required
#master-host = <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user = <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port = <port>
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin
# Point the following paths to different dedicated disks
#tmpdir = /tmp/
#log-update = /path-to-dedicated-directory/hostname
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = C:\mysql\data/
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = C:\mysql\data/
#innodb_log_arch_dir = C:\mysql\data/
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
innodb_buffer_pool_size = 1024M
innodb_additional_mem_pool_size = 1024M
# Set .._log_file_size to 25 % of buffer pool size
innodb_log_file_size = 256M
innodb_file_per_table
#table_cache = 500
table_open_cache = 200
#innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
long_query_time = 10
sync_binlog =1
query_cache_type = 1
query_cache_size = 256M
query_cache_limit = 2M
#query_cache_strip_comments = 1
[mysqldump]
quick
max_allowed_packet = 100M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer = 128M
sort_buffer_size = 128M
read_buffer = 20M
write_buffer = 20M
[myisamchk]
key_buffer = 128M
sort_buffer_size = 128M
read_buffer = 20M
write_buffer = 20M
[mysqlhotcopy]
interactive-timeout
[mysqld]
port=3306
explicit_defaults_for_timestamp = TRUE
Comentarte Jesus que sigue tardando una barbaridad, hice un Select * fui a labar mis manos, regresé y mientras escribo este parrafo continua "fetching..."