Standard SQL has a very complete description of its temporal data types. There are rules for converting from numeric and character strings to these data types, and there is a schema table for global time-zone i
The orientation of spatial data is different for the two data types as well. In the planar system used by the geometry data type, orientation of the polygon is not an important factor. For example, a polygon with the coordinates ((0, 0), (10, 0), (0, 20), (0, 0)) is considere...
sql_variantStores up to 8,000 bytes of data of various data types, except text, ntext, and timestamp uniqueidentifierStores a globally unique identifier (GUID) xmlStores XML formatted data. Maximum 2GB cursorStores a reference to a cursor used for database operations ...
The SQL Server stores data in units of pages. Page size is 8 KB or 8192 bytes. Out of which 192 bytes the data is used to metadata information related to the page header, row offset, etc. That leaves us 8000 bytes to store the data. Since column data cannot exceed a page (otherwise...
Note that the decimal and numeric data types are exactly equivalent to each other. Both data types are kept in the product for backwards compatibility. Either data type can be used when you need to store exact numeric data with decimal places, however, it is recommended that you choose either...
DBMS Interval Types: XML Types2 XMLStores XML data. It can be used wherever a SQL datatype is allowed, such as a column of a table. Example : A table using XML data type -- Creating a new table named "test" in the current schema ...
In this example, fixed-length host variables are used to insert a row into a table: 01 LAST-NAME PIC X(40). … MOVE "SMITH" TO LAST-NAME. EXEC SQLINSERT INTOPHONEDIRVALUES(:LAST-NAME, :FIRST-NAME, :MIDDLE-NAME, :PHONE) END-EXEC. ...
In some cases, MySQL may change a string column to a type different from that given in a CREATE TABLE or ALTER TABLE statement. For definitions of character string columns (CHAR, VARCHAR, and the TEXT types), MySQL interprets【ɪnˈtɜːrprəts诠释;说明;把…理解为;领会;口译;】...
The DECIMAL and NUMERIC types store exact numeric data values. These types are used when it is important to preserve exact precision, for example with monetary data. In MySQL, NUMERIC is implemented as DECIMAL, so the following remarks about DECIMAL apply equally to NUMERIC. ...
The precision determines the storage size, that a decimal number takes in the disk. The bytes depends on the precision used.The precision from 1 to 9 will require 5 bytes of disk space. For Example Decimal(3,2) , Decimal(5,2) & Decimal(9,2) will all use 5 bytes of disk space, ...