I\'m looking at having someone do some optimization on a database.If I gave them a similar version of the db with dif开发者_如何学Pythonferent data, could they create a script file to run all the opti
If I have a table that has a primary key and a foreign key, and searches are frequently done with queries that include both (...WHERE primary=n AND foreign=x), is开发者_如何学Python there any performa
How to insert data into two or more tables? Currently I am using this trick. (Let just assume that the syntax is correct)
I\'m fairly new to using MySQL and I\'m trying to understand what the most efficient way to store a player\'s inventory items in my database is.
After facing a slow loading time issue with a mysql query, I\'m now looking the best way to count rows numbers. I have stupidly used mysql_num_rows() function to do this and now realized its a worst w
according to MySQL documentation, adding ORDER BY NULL after GROUP BY should \"avoid the overhead of sorting the result\". If so, why is following query aprox 5 times slower
The query is basically: SELECT DISTINCT \"my_table\".\"foo\" from \"my_table\" WHERE... Pretending that I\'m 100% certain the DISTINCT portion of the query is the reason it runs slowly, I\'ve omitt
SELECT DISTINCT \"myapp_profile\".\"us开发者_如何学Goer_id\", \"myapp_profile\".\"name\", \"myapp_profile\".\"age\", \"auth_user\".\"id\", \"auth_user\".\"username\",
I have a MySql DataBase. I have a lot of records (about 4,000,000,000 rows) and I want to process them in order to reduce them(reduce to about 1,000,000,000 Rows).
I have 开发者_运维技巧an invitations table in my database, which has got a from and to columns, which are both foreign keys for the userId column in my users table.
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