MySQL supports all standard SQL numeric data types. These types include the exact numeric data types (INTEGER, SMALLINT, DECIMAL, and NUMERIC), as well as the approximate numeric data types (FLOAT, REAL, and DOUBLE PRECISION). The keyword INT is a synonym for INTEGER, and the keywords DEC...
虽然是Numeric,但INSERT/UPDATE时可以传入字符串,MySQL会自动转成对应Numeric类型。 类型 BIT(M) 0<=M<=64 BOOL,BOOLEAN 0 => FALSE 1 => TRUE TINYINT(M) [UNSIGNED] [ZEROFILL] 1B SMALLINT(M) [UNSIGNED] [ZEROFILL] 2B MEDIUMINT(M) [UNSIGNED] [ZEROFILL] 3B INT,INTEGER(M) [UNSIGNED] [ZER...
11.1.3 Fixed-Point Types (Exact Value) - DECIMAL, NUMERIC 11.1.4 Floating-Point Types (Approximate Value) - FLOAT, DOUBLE 11.1.5 Bit-Value Type - BIT 11.1.6 Numeric Type Attributes 11.1.7 Out-of-Range and Overflow Handling MySQL supports all standard SQL numeric data types. These types ...
MySQL中的NUMERIC类型是一种精确数值数据类型,用于存储固定精度的数字。它实际上是DECIMAL类型的别名,因此在MySQL中,NUMERIC和DECIMAL可以互换使用。 基础概念 固定精度:NUMERIC类型允许你指定小数点前后的位数,从而控制数值的精度。 存储空间:NUMERIC类型的数据存储在固定长度的字段中,因此不会因为值的增大而增加存储空间。
20%20%20%40%Number Data Types DistributionINTDECIMALFLOATDOUBLE 关系图示例 最后,让我们使用mermaid语法中的erDiagram标识符创建一个关系图,展示数字数据类型表中的关系结构: erDiagram numbers { INT, DECIMAL, FLOAT, DOUBLE } 结论 虽然MySQL中没有专门的numeric数据类型,但我们可以使用INT、DECIMAL、FLOAT和DOUB...
mysql>create table intw(a smallint(2) zerofill, -> b smallint(9)zerofill) ; Query OK, 0 rows affected (0.08 sec) mysql> insert into intw values (1,1),(1234,1234), (32767,32767); Query OK, 3 rows affected (0.00 sec) Records: 3 Duplicates: 0 Warnings: 0 mysql> select * fr...
13.1 Numeric Data Types MySQL supports all standard SQL numeric data types. These types include the exact numeric data types (INTEGER,SMALLINT,DECIMAL, andNUMERIC), as well as the approximate numeric data types (FLOAT,REAL, andDOUBLE PRECISION). The keywordINTis a synonym forINTEGER, and the ...
SQLServer中numeric对应mysql的什么类型 SQL的语法很像自然语言。每个语句都是一个祈使句,以动词开头,表示所要做的动作。后面跟的是主题和谓词 命令 SQL由命令组成,每个命令以分号(;)结束。如下面是3个独立的命令: SELECT id, name FROM foods; INSERT INTO foods VALUES (NULL, 'Whataburger');...
TheDOUBLE PRECISION [(M,D)]syntax is deprecated in the latest MySQL release. We recommend that you do not use this syntax. If you need to query exact values, use theDECIMALdata type. Bit value type TheBITtype is used to store bit values. ...
it may be pushed to the relevant source trees for release in the next version. You can access the patch from:http://lists.mysql.com/commits/972113132 Luis Soares 2010-01-18BUG#49562: SBR out of sync when using numeric data types + user variable Incremental commit: 1. Moved part of the...