In MySQL there are three main data types: string, numeric, and date and time. String Data Types Data typeDescription CHAR(size)A FIXED length string (can contain letters, numbers, and special characters). Thesizeparameter specifies the column length in characters - can be from 0 to 255. De...
2. String Data Types We are able to store the binary statistics like photographs of different media documents and even plain test inside the string statistics type values in MySQL. In addition, MySQL gives distinct functionalities for searching the string values using normal expressions, like operato...
MySQL 支持所有标准 SQL 数值数据类型。 这些类型包括严格数值数据类型(INTEGER、SMALLINT、DECIMAL 和 NUMERIC),以及近似数值数据类型(FLOAT、REAL 和 DOUBLE PRECISION)。 关键字INT是INTEGER的同义词,关键字DEC是DECIMAL的同义词。 BIT数据类型保存位字段值,并且支持 ...
MySQL has data types for storing dates and times:DATE,TIME,DATETIME,YEAR, andTIMESTAMP. MySQL tries to interpret date and time values in several formats but the date parts must always be given in year/month/day order. MySQL automatically converts a date or time value to a number if the ...
For TIME, DATETIME, and TIMESTAMP columns, the storage required for tables created before MySQL 5.6.4 differs from tables created from 5.6.4 on. This is due to a change in 5.6.4 that permits these types to have a fractional part, which requires from 0 to 3 bytes. ...
In some cases, MySQL may change a string column to a type different from that given in a CREATE TABLE or ALTER TABLE statement. For definitions of character string columns (CHAR, VARCHAR, and the TEXT types), MySQL interprets【ɪnˈtɜːrprəts诠释;说明;把…理解为;领会;口译;】...
13.9 Using Data Types from Other Database Engines MySQL supportsSQLdata types in several categories: numeric types, date and time types, string (character and byte) types, spatial types, and theJSONdata type. This chapter provides an overview and more detailed description of the properties of th...
11.1.4 Floating-Point Types (Approximate Value) - FLOAT, DOUBLE 11.1.5 Bit-Value Type - BIT 11.1.6 Numeric Type Attributes 11.1.7 Out-of-Range and Overflow Handling MySQL supports all standard SQL numeric data types. These types include the exact numeric data types (INTEGER,SMALLINT,DECIMAL...
MySQL Date and Time Types The date and time types represent DATE, TIME, DATETIME, TIMESTAMP, and YEAR. Each type has a range of valid values, as well as a “zero” value. DATETIME, DATE, and TIMESTAMP Types Time Type MySQL fetches and displays TIME values in 'HH:MM:SS' format or ...
Discover MySQL data types. Integers, decimals, text, datetime, binary choose correctly and ensure data integrity.