what integer data type

MySQL has a similar data type as SQL Server. Therefore, it is possible to ignore the same place as SQL Server and learn on the basis of SQL Server.first, the width of the whole type of displayMySQL data types are somewhat different from SQL Server

Indexing is the key to fast searching. MySQL indexing is important for the efficient operation of MySQL. Here are a few common types of MySQL indexes.In a database table, indexing a field can greatly improve query speed. Suppose we create a mytable

Continue to write blog, I hope I can persist in blogging every day. Sharing your own bits and pieces is helpful to your own growth. This afternoon high-intensity played three hours of basketball, calf cramps. It was cool, and the lost mood seemed to

1 bytes = 8 bits tinyint is a byte 2 of 8 times = 256 so store up to 256Date and time data types MySQL data type Meaning Date 3 bytes, date, format: 2014-09-18 Time 3 bytes, time, format: 0

Write in front: indexes have a critical impact on the speed of queries, and understanding indexes is also a starting point for database Performance tuning. Consider the following scenario, assuming that a table in the database has 10^6 records, the

int, bigint, smallint, and tinyintAn exact numeric data type that uses integer data.bigintInteger data (all numbers) from -2^63 (-9223372036854775808) to 2^63-1 (9223372036854775807). The storage size is 8 bytes.IntInteger data (all numbers) from -2^

An exact numeric data type that uses integer data. bigint from  -2^63  ( -9223372036854775808)   to  2^63-1  (9223372036854775807) Integer data for   (all numbers). The storage size is  8  bytes. int from  -2^31  ( -2,147,483,648)   to  2^31 

bigint 20-digit 8-byteInteger data (all numbers) from -2^63 (-9223372036854775808) to 2^63-1 (9223372036854775807). The storage size is 8 bytes.9223372036854775808P.S. bigint already has length, in MySQL build table length, just used to display the

Reasonable index-building 's recommendations:(1) Smaller data types are generally better: smaller data types typically require less space in disk, memory, and CPU caches, and are processed faster.(2) Simple data types are better: integer data is

Production Environment:Source database: RHEL + Oracle 11.2.0.3Target database: HP-UX + Oracle 10.2.0.4Requirements: Migrate part of the table 11.2.0.3-->10.2.0.4, if some tables within the migration scope already exist in the target library, then

Write in front: indexes have a critical impact on the speed of queries, and understanding indexes is also a starting point for database Performance tuning. Consider the following scenario, assuming that a table in the database has 10^6 records, the

A data type is a basic rule that defines what data can be stored in a column and how that data is actually stored. in practical programming, when choosing the basic type of a column, the basic principle is to choose the smallest type that satisfies

Write in front: indexes have a critical impact on the speed of queries, and understanding indexes is also a starting point for database Performance tuning. Consider the following scenario, assuming that a table in the database has 10^6 records, the

Use the exact numeric data type of integer data. Bigint integer data from-2 ^ 63 (-9223372036854775808) to 2 ^ 63-1 (9223372036854775807) (All numbers ). The storage size is 8 bytes. Int integer data from-2 ^ 31 (-2,147,483,648) to 2 ^ 31-1 (2,147,48

The dollar sign $ is the identifier of the variable, and all variables begin with the $ symbol, and the $ symbol should be used, whether declaring the variable or calling the variable.PHP supports a total of 8 primitive types:1, Boolean (Boolean):

From the iphone 5S A7 CPU start to the newly released iphone 6 (A8 CPU) has already supported the 64-bit ARM architecture 1.Xcode 5.0.1 start to support compiling binary for 32-bit and 64-bit 2. Support both 32-bit and 64-bit, we need

1. An application is typically composed of multiple activity.2. The task stack (the alias back stack) records the activity that the user has opened.3. When an application is turned on the system assigns him a task stack, and when all activity exits,

In mysql, the difference and length between int, bigint, smallint, and tinyint are created by creating a table, let's take a look at the differences between int bigint smallint and tinyint in mysql and the length of www.2cto.com 1. CREATE the

I. Bigint type comparison: integer data from-2 ^ 63 (-9223372036854775808) to 2 ^ 63-1 (9223372036854775807). The storage size is 8 bytes. If a byte is 8 bits, bigint has 64 bits of int: integer data from-2 ^ 31 (-2,147,483,648) to 2 ^ 31-1 (2,147,48

I recently read some architectural materials, but found that the basic knowledge is not very strong. In the next period, I will summarize the basic knowledge on a regular basis. I. Data Types 1. Integer Data Type Storage space