Which data type is used for fixed data length in MySQL?
Numeric Datatypes
| Data Type Syntax | Maximum Size |
|---|---|
| NUMERIC(m,d) | Unpacked fixed-point number. m defaults to 10, if not specified. d defaults to 0, if not specified. |
| FIXED(m,d) | Unpacked fixed-point number. m defaults to 10, if not specified. d defaults to 0, if not specified. |
| FLOAT(m,d) | Single precision floating point number. |
What is the datatype for long in MySQL?
11.9 Using Data Types from Other Database Engines
| Other Vendor Type | MySQL Type |
|---|---|
| INT8 | BIGINT |
| LONG VARBINARY | MEDIUMBLOB |
| LONG VARCHAR | MEDIUMTEXT |
| LONG | MEDIUMTEXT |
What are the data type storage requirements in MySQL?
Numeric Type Storage Requirements Data Type Storage Required TINYINT 1 byte SMALLINT 2 bytes MEDIUMINT 3 bytes INT , INTEGER 4 bytes
How many bytes are needed for a string in MySQL?
Assuming that the column uses the latin1 character set (one byte per character), the actual storage required is the length of the string ( L ), plus one byte to record the length of the string. For the string ‘abcd’, L is 4 and the storage requirement is five bytes.
How much space do I need for MySQL variable length datatype?
These datatypes require 8, 16, 24, 32, and 64 bits of storage space respectively. Each of them has different maximum and minimum values. If you are sure your values will not exceed a certain number, you should choose the smallest int datatype to conserve space and improve performance.
How is the length of a variable length string stored?
Variable-length string types are stored using a length prefix plus data. The length prefix requires from one to four bytes depending on the data type, and the value of the prefix is L (the byte length of the string). For example, storage for a MEDIUMTEXT value requires L bytes to store the value plus three bytes to store the length of the value.