change data type sql

Label:Original: SQL Server audit feature Getting Started: CDC (change Data Capture)IntroductionSQL Server 2008 introduces CDC (Change Data Capture), which can record:1. What data lines have changed2. The history of

represents the number of digits after the decimal point. For example: Decimal (15 5), which represents a total of 15 digits, where the integer is 10 bits, and the decimal number is 5. Bit table 4-3 lists the relationships between the number of bytes required for each precision.4,NUMERICThe numeric data type is exactly the same as the decimal data type.Note:SQL S

the byte space used increases by one times Span style= "Font-size:12px;font-family:verdana;color:rgb (50,62,50);" >binary binary data type binary data type is used to store fixed-length binary data up to 8000 bytes long. You should us

index to update; 6. To return the current timestamp value for the database: SELECT @ @DBTS 7. In the DDL statement, try to use rowversion instead of timestamp, and there is no rowversion data type when you design the table in SSMs; 8. In the CREATE table or ALTER table statement, you do not have to specify a column name for the timestamp data

characters, and the byte space used increases by one times Binary Binary data types The binary data type is used to store fixed-length binary data up to 8000 bytes long. You should use this data

TypesRowversion/timestampThe two data types feature the same, butMicrosoftin any case, it is advisable to indicate asrowversionand nottimestamp, becauserowversionmore accurately reflects the true nature of the data type. timestampThe data type is completely unrelated to tim

the cutoff year 2049. That is, the two-digit year 49 is interpreted as 2049, and the two-digit year 50 is interpreted as 1950. Many client applications, such as those based on OLE automation objects, use 2030 as the cutoff year.SQL Server provides a configuration option ("Two-digit cutoff year") to change the cutoff year used by SQL Server and to make the dates consistent. However, the safest option is to

　　 A data type is a property of the data that represents the type of information represented by the data. Any computer language defines its own data type. Of course, different programmi

Client ApplicationsProgram(For example, client applications based on OLE automation objects) Use 2030 as the end year. SQL Server provides a configuration option ("") to change the end year used by SQL Server and process the date in a consistent manner. However, the safest way is to specify a four-digit year. When converting from smalldatetime to character

/yy Hh:mi:ss:mmmAM* The default value (style 0 or 100, 9 or 109, 13 or 113, 20 or 120, 21, or 121) always returns century digits (yyyy).* * input when converting to datetime, and output when converting to character data.specifically for XML. For conversions from DateTime or smalldatetime to character data, the output format is shown in the table. For conversions from float, money, or smallmoney to character data