What is DOUBLE data type in database?
Double Type Double types are used when we are not certain of the behavior of our data. The input data is interpreted as floating point integer values. Some data may take more digits to the right of the decimal point. While the storage size of the decimal type is variable, the double type takes 8 bytes storage size.
What is the data type for DOUBLE in SQL?
Approximate numeric types
| Type | Description |
|---|---|
| DOUBLE | The JDBC DOUBLE type has 15 digits of precision (double precision) and maps to the SQL Server float type. The JDBC FLOAT type is a synonym of DOUBLE. Because there can be confusion between FLOAT and DOUBLE, DOUBLE is preferred. |
What is datatype DOUBLE?
Double (double-precision floating-point) variables are stored as IEEE 64-bit (8-byte) floating-point numbers ranging in value from: -1.79769313486231E308 to -4.94065645841247E-324 for negative values. 4.94065645841247E-324 to 1.79769313486232E308 for positive values.
What are DB2 data types?
Here are the data types that are supported for DB2 under UNIX and PC Hosts:
- Character data: CHAR(n) LONG VARGRAPHIC. CLOB (character large object) VARCHAR(n)
- Numeric data: BIGINT. INTEGER. DECIMAL | DEC | NUMERIC | NUM. SMALLINT.
- Date and time data: DATE. TIMESTAMP. TIME.
- Binary data: BLOB (binary large object)
How do you use double data types?
All real numbers are floating-point values. A variable can be declared as double by adding the double keyword as a prefix to it. You majorly used this data type where the decimal digits are 14 or 15 digits. However, one must use it cautiously as it consumes memory storage of 8 bytes and is an expensive method.
What is double and int data type?
The int and double are major primitive data types. The main difference between int and double is that int is used to store 32 bit two’s complement integer while double is used to store 64 bit double precision floating point value. In brief, double takes twice memory space than int to store data.
How many types of Db2 are there?
The numeric data types are binary integer, decimal, decimal floating-point, and floating-point. A character string is a sequence of bytes. The length of the string is the number of bytes in the sequence. If the length is zero, the value is called the empty string.