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## How do I create a double in MySQL?

The FLOAT and DOUBLE types represent approximate **numeric data values**. MySQL uses four bytes for single-precision values and eight bytes for double-precision values.

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Floating-Point Types.

Types | Description |
---|---|

DOUBLE | A precision from 24 to 53 results in an eight-byte double-precision DOUBLE column. |

## What is double data type 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.

## How do you represent a double data type?

**DOUBLE Data Type**

- Syntax:
- Range: 4.94065645841246544e-324d .. …
- Precision: 15 to 17 significant digits, depending on usage. …
- Representation: The values are stored in 8 bytes, using IEEE 754 Double Precision Binary Floating Point format.
- Conversions: Impala does not automatically convert DOUBLE to any other type.

## What is datatype of Double?

double: The double data type is **a double-precision 64-bit IEEE 754 floating point**. Its range of values is beyond the scope of this discussion, but is specified in the Floating-Point Types, Formats, and Values section of the Java Language Specification. For decimal values, this data type is generally the default choice.

## What is data type in MySQL?

A Data Type **specifies a particular type of data**, like integer, floating points, Boolean, etc. … In MySQL, each database table has many columns and contains specific data types for each column. We can determine the data type in MySQL with the following characteristics: The type of values (fixed or variable) it represents.

## What is data type for date in MySQL?

The DATE type is used for values with a date part but no time part. MySQL retrieves and displays DATE values in **‘ YYYY-MM-DD ‘ format**. The supported range is ‘1000-01-01’ to ‘9999-12-31’ . The DATETIME type is used for values that contain both date and time parts.

## What is Number data type?

Numeric data types are **numbers stored in database columns**. These data types are typically grouped by: Exact numeric types, values where the precision and scale need to be preserved. The exact numeric types are INTEGER , BIGINT , DECIMAL , NUMERIC , NUMBER , and MONEY .

## Which is not a data type in MySQL?

MySQL does not have the **built-in BOOLEAN or BOOL data type**. To represent boolean values, MySQL uses the smallest integer type which is TINYINT(1) . In other words, BOOLEAN and BOOL are synonyms for TINYINT(1).

## What is a double data type example?

The integer and fractional parts are sequences of decimal digits. Examples: **double a=12.111**; … For example, numbers 0.3 and 0.7 are represented in the computer as infinite fractions, while the number of 0.25 is stored exactly, because it represents the power of two.

## What is difference between double and float?

What’s the difference ? **double has 2x more precision then float**. float is a 32 bit IEEE 754 single precision Floating Point Number1 bit for the sign, (8 bits for the exponent, and 23* for the value), i.e. float has 7 decimal digits of precision.