diff --git a/pkg/datastore/sqlstore/migrations/mysql/10_alter_stats_table_constraints.sql b/pkg/datastore/sqlstore/migrations/mysql/10_alter_stats_table_constraints.sql
index e2e111d9..dba45c31 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/10_alter_stats_table_constraints.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/10_alter_stats_table_constraints.sql
@@ -5,8 +5,8 @@ DROP INDEX unique_daily_page_stats ON daily_page_stats;
 DROP INDEX unique_daily_referrer_stats ON daily_referrer_stats;
 
 CREATE UNIQUE INDEX unique_daily_site_stats ON daily_site_stats(site_id, date);
-CREATE UNIQUE INDEX unique_daily_page_stats ON daily_page_stats(site_id, hostname, pathname, date);
-CREATE UNIQUE INDEX unique_daily_referrer_stats ON daily_referrer_stats(site_id, hostname, pathname, date);
+CREATE UNIQUE INDEX unique_daily_page_stats ON daily_page_stats(site_id, hostname(100), pathname(100), date);
+CREATE UNIQUE INDEX unique_daily_referrer_stats ON daily_referrer_stats(site_id, hostname(100), pathname(100), date);
 
 -- +migrate Down
 
@@ -15,5 +15,5 @@ DROP INDEX unique_daily_page_stats ON daily_page_stats;
 DROP INDEX unique_daily_referrer_stats ON daily_referrer_stats;
 
 CREATE UNIQUE INDEX unique_daily_site_stats ON daily_site_stats(date);
-CREATE UNIQUE INDEX unique_daily_page_stats ON daily_page_stats(hostname, pathname, date);
-CREATE UNIQUE INDEX unique_daily_referrer_stats ON daily_referrer_stats(hostname, pathname, date);
\ No newline at end of file
+CREATE UNIQUE INDEX unique_daily_page_stats ON daily_page_stats(hostname(100), pathname(100), date);
+CREATE UNIQUE INDEX unique_daily_referrer_stats ON daily_referrer_stats(hostname(100), pathname(100), date);
\ No newline at end of file
diff --git a/pkg/datastore/sqlstore/migrations/mysql/12_create_hostnames_table.sql b/pkg/datastore/sqlstore/migrations/mysql/12_create_hostnames_table.sql
index 8a7bcd41..668444f3 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/12_create_hostnames_table.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/12_create_hostnames_table.sql
@@ -2,7 +2,7 @@
 CREATE TABLE hostnames(
    id INTEGER AUTO_INCREMENT PRIMARY KEY NOT NULL,
    name VARCHAR(255) NOT NULL
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 
 -- +migrate Down
 DROP TABLE IF EXISTS hostnames;
diff --git a/pkg/datastore/sqlstore/migrations/mysql/13_create_unique_hostname_index.sql b/pkg/datastore/sqlstore/migrations/mysql/13_create_unique_hostname_index.sql
index a15cf66f..4f88a4c8 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/13_create_unique_hostname_index.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/13_create_unique_hostname_index.sql
@@ -1,5 +1,5 @@
 -- +migrate Up
-CREATE UNIQUE INDEX unique_hostnames_name ON hostnames(name);
+CREATE UNIQUE INDEX unique_hostnames_name ON hostnames(name(100));
 
 -- +migrate Down
 DROP INDEX IF EXISTS unique_hostnames_name;
diff --git a/pkg/datastore/sqlstore/migrations/mysql/14_create_pathnames_table.sql b/pkg/datastore/sqlstore/migrations/mysql/14_create_pathnames_table.sql
index 2cebe403..ad759fd1 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/14_create_pathnames_table.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/14_create_pathnames_table.sql
@@ -2,7 +2,7 @@
 CREATE TABLE pathnames(
    id INTEGER AUTO_INCREMENT PRIMARY KEY NOT NULL,
    name VARCHAR(255) NOT NULL
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 
 -- +migrate Down
 DROP TABLE IF EXISTS pathnames;
diff --git a/pkg/datastore/sqlstore/migrations/mysql/15_create_unique_pathname_index.sql b/pkg/datastore/sqlstore/migrations/mysql/15_create_unique_pathname_index.sql
index fdc81122..d114a1ab 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/15_create_unique_pathname_index.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/15_create_unique_pathname_index.sql
@@ -1,5 +1,5 @@
 -- +migrate Up
-CREATE UNIQUE INDEX unique_pathnames_name ON pathnames(name);
+CREATE UNIQUE INDEX unique_pathnames_name ON pathnames(name(100));
 
 -- +migrate Down
 DROP INDEX IF EXISTS unique_pathnames_name;
diff --git a/pkg/datastore/sqlstore/migrations/mysql/1_initial_tables.sql b/pkg/datastore/sqlstore/migrations/mysql/1_initial_tables.sql
index 4fcc9ecd..0d282f46 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/1_initial_tables.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/1_initial_tables.sql
@@ -4,7 +4,7 @@ CREATE TABLE users (
   id INT AUTO_INCREMENT PRIMARY KEY NOT NULL,
   email VARCHAR(100) NOT NULL,
   password VARCHAR(255) NOT NULL
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 
 CREATE TABLE pageviews(
    id INT AUTO_INCREMENT PRIMARY KEY NOT NULL,
@@ -18,7 +18,7 @@ CREATE TABLE pageviews(
    referrer VARCHAR(255) NULL,
    duration INT(4) NULL,
    timestamp DATETIME NOT NULL
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 
 CREATE TABLE daily_page_stats(
    hostname VARCHAR(255) NOT NULL,
@@ -29,7 +29,7 @@ CREATE TABLE daily_page_stats(
    bounce_rate FLOAT NOT NULL,
    avg_duration FLOAT NOT NULL,
    date DATE NOT NULL
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 
 CREATE TABLE daily_site_stats(
    pageviews INT NOT NULL,
@@ -38,7 +38,7 @@ CREATE TABLE daily_site_stats(
    bounce_rate FLOAT NOT NULL,
    avg_duration FLOAT NOT NULL,
    date DATE NOT NULL
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 
 CREATE TABLE daily_referrer_stats(
    url VARCHAR(255) NOT NULL,
@@ -47,12 +47,12 @@ CREATE TABLE daily_referrer_stats(
    bounce_rate FLOAT NOT NULL,
    avg_duration FLOAT NOT NULL,
    date DATE NOT NULL
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 
 CREATE UNIQUE INDEX unique_user_email ON users(email);
 CREATE UNIQUE INDEX unique_daily_site_stats ON daily_site_stats(date);
-CREATE UNIQUE INDEX unique_daily_page_stats ON daily_page_stats(hostname, pathname, date);
-CREATE UNIQUE INDEX unique_daily_referrer_stats ON daily_referrer_stats(url, date);
+CREATE UNIQUE INDEX unique_daily_page_stats ON daily_page_stats(hostname(100), pathname(100), date);
+CREATE UNIQUE INDEX unique_daily_referrer_stats ON daily_referrer_stats(url(100), date);
 
 
 -- +migrate Down
diff --git a/pkg/datastore/sqlstore/migrations/mysql/23_alter_referrer_stats_table.sql b/pkg/datastore/sqlstore/migrations/mysql/23_alter_referrer_stats_table.sql
index 4e075539..5d1d57b0 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/23_alter_referrer_stats_table.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/23_alter_referrer_stats_table.sql
@@ -10,7 +10,7 @@ CREATE TABLE referrer_stats(
     known_durations INTEGER NOT NULL DEFAULT 0, 
     avg_duration FLOAT NOT NULL, 
     ts DATETIME NOT NULL 
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 INSERT INTO referrer_stats 
     SELECT site_id, hostname_id, pathname_id, groupname, pageviews, visitors, bounce_rate, known_durations, avg_duration, CONCAT(date, ' 00:00:00')
     FROM daily_referrer_stats s;
diff --git a/pkg/datastore/sqlstore/migrations/mysql/3_referrer_group_column.sql b/pkg/datastore/sqlstore/migrations/mysql/3_referrer_group_column.sql
index f30c11f2..1bac5378 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/3_referrer_group_column.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/3_referrer_group_column.sql
@@ -10,7 +10,7 @@ ALTER TABLE daily_referrer_stats ADD COLUMN pathname VARCHAR(255);
 UPDATE daily_referrer_stats SET hostname = SUBSTRING_INDEX( url, "/", 3) WHERE url != "" AND ( hostname = "" OR hostname IS NULL);
 UPDATE daily_referrer_stats SET pathname = REPLACE(url, hostname, "") WHERE url != "" AND (pathname = '' OR pathname IS NULL);
 
-CREATE UNIQUE INDEX unique_daily_referrer_stats ON daily_referrer_stats(hostname, pathname, date);
+CREATE UNIQUE INDEX unique_daily_referrer_stats ON daily_referrer_stats(hostname(100), pathname(100), date);
 ALTER TABLE daily_referrer_stats DROP COLUMN url;
 
 -- +migrate Down
diff --git a/pkg/datastore/sqlstore/migrations/mysql/5_create_sites_table.sql b/pkg/datastore/sqlstore/migrations/mysql/5_create_sites_table.sql
index 10f959cc..d46f5dd7 100644
--- a/pkg/datastore/sqlstore/migrations/mysql/5_create_sites_table.sql
+++ b/pkg/datastore/sqlstore/migrations/mysql/5_create_sites_table.sql
@@ -3,7 +3,7 @@ CREATE TABLE sites (
     id INTEGER AUTO_INCREMENT PRIMARY KEY NOT NULL,
     tracking_id VARCHAR(8) UNIQUE,
     name VARCHAR(100) NOT NULL
-) CHARACTER SET=utf8;
+) CHARACTER SET=utf8 ENGINE=INNODB;
 
 -- +migrate Down
 DROP TABLE IF EXISTS sites;
\ No newline at end of file