ansi sql data types

I. Numeric typeMySQL supports all numeric types in standard SQL, including strict data types (integer,smallint,decimal,numberic), and approximate numeric data types (float,real,double presision). and expand on this basis.The exten

C # Calling DLL file time parameter corresponding table unmanaged types in Wtypes.h unmanaged C language type managed class name Description HANDLE void* System.IntPtr 32-bit BYTE unsigned char System.Byte 8-bit Short Short System.Int16 16-bit WORD unsigned short System.UInt16 16-bit INT int System.Int32 32-b

type in MySQL3.22 .) CHAR (M) [BINARY]A fixed-length string, when stored, is always filled with spaces to the right to the specified length. The range of M is 1 ~ It can contain 255 characters. When the value is retrieved, the tail of the space is deleted. CHAR values are sorted and compared in a case that is not distinguished by the default Character Set, unless BINARY keywords are given. National char (short form NCHAR) is an ansi

Numeric data type Visual Basic supports several Numeric data types: Integer (integer), long, single (single-precision floating-point type), double (double-precision floating-point type), and Currency (currency type). The Numeric type occupies less storage space than the Variant type. If you know that a variable always holds an integer (such as 12) instead of a

that you use nvarchar for all fields whose content is stored in Chinese. Operation Description: Open SQL Server Management Studio, select the database for which you want to update the field type, click the new query menu, and execute the following statement. Code details: -- Replace all user data tables in the database with scripts whose field data

Tags: Locate store src employee number date_sub specified position subscript valueTransferred from: http://www.cnblogs.com/mark-chan/p/5384139.htmlIntroduction to Stored ProceduresSQL statements need to be compiled and executed, and stored procedures (Stored Procedure) are a set of SQL statements that are compiled in order to accomplish a particular function, stored in a database after compilation, and invoked by the user by specifying the name of the

data format to the CLOB data format. The can reference a Long data type column in the following SQL statement type: * SELECT list * In the SET clause of the UPDATE statement * Using the Long data type in the VALUES clause of the INSERT statement will be subject to many

Underlying data type Java type SQL type int or Java.lang.Integer INTEGER Long or Java.lang.Long BIGINT Short or Java.lang.Short SMALLINT float or java.lang.Float FLOAT Double or java.lang.Double DOUBLE Java.math.BigDecimal NUMERIC Java.lang.String VARCHAR

database to the MySQL database. To facilitate the comparison, the Data Types of the two databases are summarized as follows: Recommended reading: From commercial to open-source: Best practices for migrating DB2 to MySQL Analyzes the differences between DB2 and MySQL Databases in 15 dimensions From Oracle to MySQL, the most important thing is... Non-technical differences

sql| Difference |varchar| field type What is the difference between nvarchar and varchar in SQL Server 2000? SQL Server provides two types of data to store character information. The two data

meet our needs, enter four numbers to indicate the year. Dateyime and timestamp typesIn addition to the date and time data types, MySQL also supports the combination of dateyime and timestamp. They can store dates and times as a single value. These two types are usually used to automatically store timestamps containing the current date and time, it can also play

own INSTEAD of triggers. INSTEAD of triggers cannot be used with updatable views using the WITH CHECK OPTION. If you add a INSTEAD of trigger to an updatable view that specifies with CHECK OPTION, SQL Server throws an error. The user must delete this option with ALTER VIEW to define the INSTEAD of trigger. {[DELETE] [,] [INSERT] [,] [UPDATE]} Specifies data modification statements that enable the DML tr

xml| Data | data type Overview Java EE developers typically need to store XML documents in relational databases and retrieve XML documents from the database for element values and attribute values. Currently, only vendor-specific technology and data types can be used to store XML documents in a relational database. For

--------------------------------------------------------------------------- 12-DEC-85 01-DEC-84 + 000000376-00 -- Directly change the subtracted days to an adult, Because I specify to change the days to years. SQL> select a-B, c from bb; A-B ---------- C --------------------------------------------------------------------------- 376 + 000000376-00 SQL> insert into bb values (null, null, numtoyminterv

Recently, due to programming needs, I have made some research on C # type conversion, the content involves C # Packing/unpacking/alias, mutual conversion between numeric types, ASCII and Unicode characters, conversion between numeric strings and numeric values, string and character array/byte conversion between arrays, conversion between various numeric types and byte arrays, hexadecimal output, and some Co