What are different data types in MySQL?
In MySQL there are three main data types: string, numeric, and date and time.
What is MySQL What are the different data types in MySQL explain each of them with examples?
MySQL has all essential SQL numeric data types. These data types can include the exact numeric data types (For example, integer, decimal, numeric, etc.), as well as the approximate numeric data types (For example, float, real, and double precision). It also supports BIT datatype to store bit values.
What are the three 3 main category of data types in MySQL?
We will learn about the data types in three different categories i.e. Numeric data type, String data types, and Datetime data types.
What are the five data types?
- String (or str or text). Used for a combination of any characters that appear on a keyboard, such as letters, numbers and symbols.
- Character (or char). Used for single letters.
- Integer (or int). Used for whole numbers.
- Float (or Real). …
- Boolean (or bool).
What are the types of data type?
|Data Type||Used for||Example|
|String||Alphanumeric characters||hello world, Alice, Bob123|
|Integer||Whole numbers||7, 12, 999|
|Float (floating point)||Number with a decimal point||3.15, 9.06, 00.13|
|Character||Encoding text numerically||97 (in ASCII, 97 is a lower case ‘a’)|
What is the full form of MySQL?
The full form of MySQL is My Structured Query Language.
What is a double in MySQL?
DOUBLE is a double precision floating point number. MySQL uses eight bytes to store a DOUBLE value. MySQL treats DOUBLE as a synonym for DOUBLE PRECISION (a non-standard extension). In addition, MySQL also treats REAL as a synonym for DOUBLE PRECISION , unless the REAL_AS_FLOAT SQL mode is enabled.
What is enum data type in MySQL?
An ENUM is a string object with a value chosen from a list of permitted values that are enumerated explicitly in the column specification at table creation time.
What is primary key SQL?
In SQL, a primary key is a single field or combination of fields that uniquely defines a record. None of the fields that are part of the primary key can contain a NULL value. A table can have only one primary key. You use either the CREATE TABLE statement or the ALTER TABLE statement to create a primary key in SQL.
What is data type for date in SQL?
Date and Time data types
|date||YYYY-MM-DD||0001-01-01 through 9999-12-31|
|smalldatetime||YYYY-MM-DD hh:mm:ss||1900-01-01 through 2079-06-06|
|datetime||YYYY-MM-DD hh:mm:ss[.nnn]||1753-01-01 through 9999-12-31|
|datetime2||YYYY-MM-DD hh:mm:ss[.nnnnnnn]||0001-01-01 00:00:00.0000000 through 9999-12-31 23:59:59.9999999|
What data type is price in SQL?
The best type for price column should be DECIMAL. The type DECIMAL stores the value precisely. For Example – DECIMAL(10,2) can be used to store price value. It means the total digit will be 10 and two digits will be after decimal point.
Which are the 2 types of queries?
Two types of queries are available, snapshot queries and continuous queries.
What is varchar in MySQL?
Varchar in MySQL is a data type used for storing text whose length can have a maximum of 65535 characters. The varchar columns in the table are of variable length string that can hold either numeric or character or both.