大约有 43,000 项符合查询结果（耗时：0.0631秒） [XML]
Database sharding vs partitioning
I have been reading about scalable architectures recently. In that context, two words that keep on showing up with regards to databases are sharding and partitioning . I looked up descriptions but still ended up confused.
...
Best practices for SQL varchar column length [closed]
Every time is set up a new SQL table or add a new varchar column to an existing table, I am wondering one thing: what is the best value for the length .
...
Tips for using Vim as a Java IDE? [closed]
I'm addicted to Vim, it's now my de facto way of editing text files.
7 Answers
7
...
Difference between Key, Primary Key, Unique Key and Index in MySQL
When should I use KEY , PRIMARY KEY , UNIQUE KEY and INDEX ?
8 Answers
8
...
Dump a mysql database to a plaintext (CSV) backup from the command line
I'd like to avoid mysqldump since that outputs in a form that is only convenient for mysql to read. CSV seems more universal (one file per table is fine). But if there are advantages to mysqldump, I'm all ears. Also, I'd like something I can run from the command line (linux). If that's a mysql s...
Why doesn't Python have a sign function?
I can't understand why Python doesn't have a sign function. It has an abs builtin (which I consider sign 's sister), but no sign .
...
How to make a Java class that implements one interface with two generic types?
I have a generic interface
9 Answers
9
...
When can I use a forward declaration?
I am looking for the definition of when I am allowed to do forward declaration of a class in another class's header file:
1...
How to create an object property from a variable value in JavaScript? [duplicate]
I want to add a new property to 'myObj', name it 'string1' and give it a value of 'string2', but when I do it it returns 'undefined:
...
Sort array of objects by single key with date value
I have an array of objects with several key value pairs, and I need to sort them based on 'updated_at':
19 Answers
...