Data Types Overview

MatrixOne Data types conforms with MySQL Data types definition.

Reference: <https://dev.mysql.com/doc/refman/8.0/en/data-types.html>

Integer Numbers

Data Type Size Min Value Max Value
TINYINT 1 byte -128 127
SMALLINT 2 byte -32768 32767
INT 4 byte -2147483648 2147483647
BIGINT 8 byte -9223372036854775808 9223372036854775807
TINYINT UNSIGNED 1 byte 0 255
SMALLINT UNSIGNED 2 byte 0 65535
INT UNSIGNED 4 byte 0 4294967295
BIGINT UNSIGNED 8 byte 0 18446744073709551615

Real Numbers

Data Type Size Precision Syntax
FLOAT32 4 byte 23 bits FLOAT
FLOAT64 8 byte 53 bits DOUBLE

String Types

Data Type Size Syntax
String 24 byte CHAR, VARCHAR

Time and Date Types

Data Type Size Resolution Min Value Max Value Precision
Date 4 byte day 1000-01-01 9999-12-31 YYYY-MM-DD/YYYYMMDD
DateTime 4 byte second 1970-01-01 00:00:00 2105-12-31 23:59:59 YYYY-MM-DD hh:mm:ss

Decimal Types(Beta)

Data Type Size Precision Syntax
Decimal64 8 byte 19 digits Decimal(N,S), N range(1,18), S range(0,N)
Decimal128 16 byte 38 digits Decimal(N,S), N range(19,38), S range(0,N)

Examples

1. //Create a table named "numtable" with 3 attributes of an "int", a "float" and a "double"
2. > create table numtable(id int,fl float, dl double);

4. //Insert a dataset of int, float and double into table "numtable"
5. > insert into numtable values(3,1.234567,1.2345678912345678912);

7. // Create a table named "numtable" with 2 attributes of an "int" and a "float" up to 5 digits in total, of which 3 digits may be after the decimal point.
8. > create table numtable(id int,fl float(5,3));

10. //Insert a dataset of int, float into table "numtable"
11. > insert into numtable values(3,99.123);

13. //Create a table named "numtable" with 2 attributes of an "int" and a "float" up to 23 digits in total.
14. > create table numtable(id int,fl float(23));

16. //Insert a dataset of int, float into table "numtable"
17. > insert into numtable values(1,1.2345678901234567890123456789);

19. //Create a table named "numtable" with 4 attributes of an "unsigned tinyint", an "unsigned smallint", an "unsigned int" and an "unsigned bigint"
20. > create table numtable(a tinyint unsigned, b smallint unsigned, c int unsigned, d bigint unsigned);

22. //Insert a dataset of unsigned (tinyint, smallint, int and bigint) into table "numtable"
23. > insert into numtable values(255,65535,4294967295,18446744073709551615);

25. //Create a table named "names" with 2 attributes of a "varchar" and a "char"
26. > create table names(name varchar(255),age char(255));

28. //Insert a data of "varchar" and "char" into table "names"
29. > insert into names(name, age) values('Abby', '24');

31. //Create a table named "calendar" with 2 attributes of a "date" and a "datetime"
32. > create table calendar(a date, b datetime);

34. //Insert a data of "date" and "datetime" into table "calendar"
35. > insert into calendar(a, b) values('20220202, '2022-02-02 00:10:30');
36. > insert into calendar(a, b) values('2022-02-02, '2022-02-02 00:10:30');

38. //Create a table named "decimalTest" with 2 attribute of a "decimal" and b "decimal"
39. > create table decimalTest(a decimal(6,3), b decimal(24,18));
40. > insert into decimalTest values(123.4567, 123456.1234567891411241355);
41. > select * from decimalTest;
42. +---------+---------------------------+
43. | a       | b                         |
44. +---------+---------------------------+
45. | 123.456 | 123456.123456789141124135 |
46. +---------+---------------------------+