Index type1. Unique index: Unique index does not allow two rows to have the same index value2. Primary KEY index: Defining a primary key for a table will automatically create a primary key index, which is a special type of unique index. The primary
directory of this document
First, arithmetic operators
Second, assignment operator
The increment operator and the self-decrement operator
Iv. sizeof
Five, comma operator
Vi. Relational operators
Seven, logical
Python BASICS (10)-numbers, python basics-Numbers
The topic of this article is numbers in Python. Describes each numeric type in detail, the various operators they apply, and the built-in functions used to process numbers. At the end of the article,
Next article: A * exploring gamedev.net
Use a binary heap in a * pathfindingPatrick Lester (updated in December April 11, 2003)Translator: panic March 28, 2005Preface:This article is "A * pathfinding for beginners. ", that is, Supplement to another
The topic of this article is numbers in Python. Describes each numeric type in detail, the various operators they apply, and the built-in functions used to process numbers. At the end of the article, I briefly introduced several modules used to
Interpreting histogram informationFrom:Interpreting histogram information (Doc ID 72539.1)Suitable for:Oracle database-enterprise edition-version 7.3.0.0 and laterOracle Database-standard edition-version 7.3.0.0 and laterOracle database-personal
ReprintedBytes
IndexYou can use indexes to quickly access specific information in database tables. An index is a structure that sorts the values of one or more columns in a database table (for example, the last name (lname) column of the employee
There are two arrays A and B with the length of m and n, respectively. Find the same elements in the two arrays with the number of comparisons not greater than m + n, and delete the same elements in the array.There are two arrays A and B with the
MULINB by: The classic intelligent pathfinding algorithm, a foreigner wrote very thorough very clear, it is easy to let people understand the mysterious A * algorithm. The following is a Chinese translation version. A * search for the road
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.