Browsing articles in "MySQL"
Jul 24, 2012

Mysql delete duplicate records leaving one

Mysql delete duplicate records leaving one row. Consider that there are many duplicate records in the table and you want to remove it. Now, we can select it by applying GROUP BY but the question is how to delete all the duplicate records (of field some_id below) EXCEPT one that should be there. So, lets say I have following table with duplicate data as shown:
Tablename: test

unique_id | some_id
1         | 1
2         | 1
3         | 2
4         | 2
5         | 1

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Feb 12, 2012

Magento add admin user in MySQL

In Magento, if you want to create a new user directly in Mysql, it’s not that easy to insert one record in admin_user table.
You need to also update the privileges and inserting new admin’s roles.
So here is a Mysql script which will create a new admin user with all privileges.

Replace FIRSTNAME, LASTNAME, EMAIL, USERNAME, PASSWORD with your desired values.

insert into admin_user
(select max(user_id) + 1 from admin_user) user_id,
'FIRSTNAME' first_name,
'LASTNAME' last_name,
'USERNAME' username,
MD5('PASSWORD') password,
now() created,
NULL modified,
NULL logdate,
0 lognum,
0 reload_acl_flag,
1 is_active,
(select max(extra) from admin_user where extra is not null) extra,

insert into admin_role
(select max(role_id) + 1 from admin_role) role_id,
(select role_id from admin_role where role_name = 'Administrators') parent_id,
2 tree_level,
0 sort_order,
'U' role_type,
(select user_id from admin_user where username = 'USERNAME') user_id,
'USERNAME' role_name

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Kalpesh MehtaHelping Magento developers in their day-to-day development problems since 2011. Most of the problems and solutions here are my own experiences while working on different projects. Enjoy the blog and don't forget to throw comments and likes/+1's/tweets on posts you like. Thanks for visiting!




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