mysql decimal vs double

Database overviewWhat is DataSymbolic records describing things are called dataWhat is a databaseThe database is the warehouse where the data is stored, except that the warehouse is on a computer storage device, and the data is stored in a certain

Since the introduction of the relational database model by edugatd in 1970, relational databases began to emerge. After more than 40 years of evolution, today's relational databases have a wide variety of features and are widely used. In the face of

This article lists the MySQL data type list, which consists of five main categories: integer type, floating-point type, String type, date type, and other data types, which are explained in detail in the following five data types. There are also the

Lead Practical experience from the frontline There's a bloody lesson behind every military rule. Do not be gorgeous, as long as practical If there's one that benefits you, you'll be comforting. Primarily for database

* Operation of the library (increase and deletion check)I. System databaseView system library commands show databases1.information_schema:Virtual library, does not occupy disk space, storage is the database startup parameters, such as user table

[Mysql] database usage specifications, mysql database specificationsI. MySQL Problems The optimizer does not support complex SQL statements. Poor Support for SQL standards The large-scale cluster solution is not mature, mainly refers to

1 Overall knowledge introduction : MySQL basic operation and use, MySQL optimization (index, sub-table, etc.), MySQL deployment (read/write separation, load balancing, etc.)Database Basic Introduction : Database concept, common database, Web

How to choose the right storage engineFeatures of several common storage enginesHere we focus on several common storage engines and compare the differences and recommended usage between each storage engine.Features

I. Problems with MySQL Optimizer does not support complex SQL Poor support for SQL standard Large-scale cluster scheme is immature, mainly refers to middleware ID generator, global self-increment ID Asynchronous logical

MySQL data types can be categorized into three categories, namely, numeric data types, string data types, and datetime data types.Numeric data typeNumeric types can also be classified as Integer, floating-point type, Decimal.Integral typeThe MySQL