mysql double type

Mysql float double type 1. float Type float column type default length cannot be found, you must specify the precision, such as num float, insert into table (num) values (0.12); select * from table where num = 0.12, empty set. Num float (0.12),

A. Numeric type MySQL supports numeric types in all standard SQL, including strict data types (integer,smallint,decimal,numberic), and approximate numeric data types (float,real,double presision). And on this basis to expand. After the expansion,

MySQL常用指令，java，php程序员，数据库工程师必备。程序员小冰常用资料整理MySQL common commands (for reference)The most common display commands are:1. Display the list of databases.show databases;2. Display the data table in the library:Use MySQL;Show tables;3, display the

1.float typeFloat column Type default length cannot find results, you must specify precision,For example , num float, INSERT into table (num) values (0.12); Select * from table where num=0.12, empty set.Num Float (9,7), insert into table (num)

See: http://blog.yemou.net/article/query/info/tytfjhfascvhzxcyt336A real number is one with a fractional part. However, they are not just for storing fractional parts, but they can also be usedDeclmal stores an integer larger than the bigint. MySQL

1.float typeThe default length of the float column type does not find the result. Precision must be specified.For example , num float, INSERT into table (num) values (0.12); Select * FROM table where num=0.12 words. Empty set.Num Float (9,7),

1. float TypeThe float column type cannot be found by default. The precision must be specified,For example, numFloat,InsertTable (num) values (0.12); select* From table where num = 0.12, empty set.Num float (9, 7 ),InsertTable (num) values (0.12);

1. Integral type MySQL data type Meaning (Signed) tinyint (m) 1 byte range ( -128~127) smallint (m) 2 byte range ( -32768~32767) Mediumint (M) 3 byte range ( -8388608~8388607)

MYSQL getting started 4: MYSQL data type bitsCN.com MYSQL entry 4: MYSQL data types Related links: MYSQL: Basic operations Http: // database/201212/173868 .html MYSQL 2: use regular expressions to search Http: // database/201212/173869 .html MYSQL

Mysql Data Type I. Numerical type Mysql supports all numeric types in standard SQL, including strict data types (INTEGER, SMALLINT, DECIMAL, NUMBERIC), and approximate numeric data types (FLOAT, REAL, DOUBLE PRESISION ), in addition, it is extended.