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Label:Mapping from a JDBC type to a Java type JDBC Type Java Type CHAR String VARCHAR String LONGVARCHAR String NUMERIC java.math.BigDecimal DECIMAL java
You see this article from HTTP://WWW.CNBLOGS.COM/AYANMWReprinted from: http://blog.csdn.net/daydreamingboy/article/details/6310907Analyze the length of the MySQL data typeMySQL has several data types that can limit the "length" of a type, with char (length), VARCHAR (length), TINYINT (length), SMALLINT (length), mediumint (length), INT ( Length), BIGINT (length),
-point operation may have rounding errors.Common methods for type int>>> Help (int)Methods defined here:__abs__ (self,/)--Take absolute valueABS (self)-->>> age=-18>>> age.__abs__ ()18>>> ABS (age)-perform built-in functions abs () is actually called the int.__abs__ method18Bit_length (...)Int.bit_length () int--Get the length of the int store>>> Bin (37)' 0b100101 '>>> (PNS). Bit_length ()6__divmod__ (self, value,/)--seeking quotient and remainderRet
type stores all positive integers from 0 to 255. Each tinyint type of data consumes 1 bytes of storage space.4, BIGINTThe BIGINT data type stores all positive and negative integers from -2^63 (-9, 223, 372, 036, 854, 775, 807) to 2^63-1 (9, 223, 372, 036, 854, 775, 807). Ea
Label:The following table lists the default mappings between the basic SQL Server, JDBC, and Java programming language data types: SQL Server Type JDBC Type (java.sql.Types) Java Language Types bigint BIGINT Long TimestampBinary BINARY Byte[] Bit BIT Boolean
Database C # programs Int Int32 Text String bigint Int64 Binary System.byte[] Bit Boolean Char String Datetime System.DateTime Decimal System.Decimal Float System.Double Image System.byte[] Money System.Decimal NChar Strin
SQL Server Type JDBC Type (java.sql.Types) Java Language Types bigint BIGINT Long TimestampBinary BINARY Byte[] Bit BIT Boolean Char CHAR String DecimalMoneySmallMoney DECIMAL Java.math.BigDecimal Float DOUBLE D
(1) Integer typeintegers include bigint, int, smallint, and tinyint, which can be seen from the meaning of identifiers, and their range of representations is gradually shrinking.L bigint: Large integer, number range is-263 (-9223372036854775808) ~263-1 (9223372036854775807), with a precision of 19, a scale of 0, and a length of 8 bytes.L int: integer, number range is-231 (-2,147,483,648) ~231-1 (2,147,483,647), its precision is 10, the number of decimal
Data type1.OBJECTIVE-C data types can be categorized as: Basic data types, object data types, and ID types.2. The basic data types are: int, float, double, and char type.3. The object type
Front-end PHP variables, data types and scopes, PHP data types Directory[1] variable variable definition variable assignment [2] data type string integer floating-point Boolean Array Object NULL resource [3] scope global static Variable Variable definition A variable is a container for storing information, beginning w
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) Int (m) 4 byte range ( -2147483648~2147483647) BigInt (M) 8 byte Range (18 +-9.22*10 of the
ArticleDirectory Int type Float, double, and decimal types Char and varchar types Text and blob types Date, time, and tear types Dateyime and timestamp types Enum type Set Type Value Type MySQL numeric
is relatively safe and does not accept embedding of malicious script contentint integral typeThe int data type can store integers from 2 to 31 powers (-2147483648) to 2 to 31 powers (2147483 647). Almost all numeric data stored in a database can be used with this data type.
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 additi
INT 8-byte BIGINT type [Attributes can be added: UNSIGNED] Float (decimal ): FLOAT (M, N) 4-byte [length M, retain N digits after the decimal point] DOUBLE (M, N) 8 bytes DECIMAL (M, N) M + 2 bytes [number of points, data is stored in the form of strings, more accurate
participates in an operation or expression:Error: Reference error3. Data type: 2 major categories:The first large type: the value of the original type is stored directly in the variable local data type"5": number String Boolean u
value of "M:" +m);The following table lists most of the data types, in fact, the data type is not limited to the four class eight, there are many, we understand the function functions, including a lot of methods can be seen as a kind of data, and then can operate on it, learning is still too little Byte
Next, I will provide a summary of mysql Data Types, that is, field types, including type descriptions and string lengths of different data types. I will introduce them below. I. numeric type Storage required for column typesTINYINT 1 byteSMALLINT 2 bytesMEDIUMINT 3 bytesINT 4 bytesINTEGER 4 bytesBIGINT 8 bytesFLOAT (X)
The main learning T-SQL data type: numeric data type, numeric data type, temporary data type, hybrid d
Tags: style ar using SP strong file data on DivNumeric typeMySQL's numeric data types can be roughly divided into two categories, one is an integer and the other is a floating-point or decimal. Many different subtypes are available for each of these categories, and each subtype supports data of different sizes, and MyS
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