What is the length of Tinyint?
Table 11.1 Required Storage and Range for Integer Types Supported by MySQL
| Type | Storage (Bytes) | Maximum Value Signed |
|---|---|---|
| TINYINT | 1 | 127 |
| SMALLINT | 2 | 32767 |
| MEDIUMINT | 3 | 8388607 |
| INT | 4 | 2147483647 |
What is the permitted width for Tinyint datatype?
TINYINT − A very small integer that can be signed or unsigned. If signed, the allowable range is from -128 to 127. If unsigned, the allowable range is from 0 to 255. You can specify a width of up to 4 digits.
What does Tinyint 2 mean?
It means display width. Whether you use tinyint(1) or tinyint(2), it does not make any difference. I always use tinyint(1) and int(11), I used several mysql clients (navicat, sequel pro). It does not mean anything AT ALL! I ran a test, all above clients or even the command-line client seems to ignore this.
What does Int 4 mean in mysql?
For example, INT(4) specifies an INT with a display width of four digits. This optional display width may be used by applications to display integer values having a width less than the width specified for the column by left-padding them with spaces.
What is the maximum value support in char data type?
65,535
char: The char data type is a single 16-bit Unicode character. It has a minimum value of ” (or 0) and a maximum value of ‘ffff’ (or 65,535 inclusive).
What is data type for date in MySQL?
The DATETIME type is used for values that contain both date and time parts. MySQL retrieves and displays DATETIME values in ‘ YYYY-MM-DD hh:mm:ss ‘ format. The supported range is ‘1000-01-01 00:00:00’ to ‘9999-12-31 23:59:59’ . The TIMESTAMP data type is used for values that contain both date and time parts.
What is 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….Floating-Point Types.
| Types | Description |
|---|---|
| DOUBLE | A precision from 24 to 53 results in an eight-byte double-precision DOUBLE column. |
What is Tinyint data type?
A 1-byte integer data type used in CREATE TABLE and ALTER TABLE statements.
What’s the difference between TINYINT ( 1, 2, 3 )?
Here a, band care using TINYINT(1), TINYINT(2)and TINYINT(3)respectively. As you can see, it pads the values on the left side using the display width. It’s important to note that it does not affect the accepted range of values for that particular type, i.e. TINYINT(1)still accepts [-128 .. 127].
What is the display width of TINYINT ( m )?
TinyINT(M) always has a range from -128..+127 signed or 0..255 unsigned. M is the display width. M indicates the maximum display width for integer types. The maximum display width is 255. Display width is unrelated to the range of values a type can contain, as described in Section 11.2, “Numeric Types”.
What is the value of TINYINT ( 1 ) in DDL?
A tinyint (1) can hold numbers in the range -128 to 127, due to the datatype being 8 bits (1 byte) – obviously an unsigned tinyint can hold values 0-255. The value used in the DDL for the datatype (eg: tinyint (1)) is, as you suspected, the display width.
Why do I use TINYINT in MySQL?
According to Mysql manual all decimal numeric types supports syntax: When using DECIMAL it allows you to specify precision. With *INT types it’s has mainly display function which also specifies how many places should be added when using ZEROFILL. The byte size remains unaffected ( 1B for TINYINT ). (n) is for display purposes.
