隐式转换不需要规范 CAST 函数或 CONVERT 函数。 显示转换需要规范 CAST 函数或 CONVERT 函数。 以下图例显示了可对 SQL Server 系统提供的数据类型执行的所有显式和隐式数据类型转换。 这些包括 bigint、sql_variant 和 xml 。 不存在对 sql_variant 数据类型的赋值进行的隐式转换,但是存在转换为 sql_variant ...
隐式转换不需要规范 CAST 函数或 CONVERT 函数。 显示转换需要规范 CAST 函数或 CONVERT 函数。 以下图例显示了可对 SQL Server 系统提供的数据类型执行的所有显式和隐式数据类型转换。 这些包括 bigint、sql_variant 和 xml 。 不存在对 sql_variant 数据类型的赋值进行的隐式转换,但是存在转换为 sql_variant ...
隱含轉換不需要指定 CAST 函數或 CONVERT 函數。 明確轉換需要指定 CAST 函數或 CONVERT 函數。 下圖顯示 SQL Server 系統提供之資料類型所能使用的所有明確與隱含資料類型轉換。 這些包含 bigint、sql_variant 和xml。從 sql_variant 資料類型進行指派時,不可使用隱含轉換,但可以隱含轉換成 sql_variant。
CONVERT syntax:syntaxsql Copy CONVERT ( data_type [ ( length ) ] , expression [ , style ] ) Transact-SQL syntax conventionsNote To view Transact-SQL syntax for SQL Server 2014 and earlier, see Previous versions documentation.Argumentsexpression...
SQL Server provides the two digit year cutoff configuration option to change the cutoff year used by SQL Server. This allows for the consistent treatment of dates. We recommend specifying four-digit years.3 Input when you convert to datetime; output when you convert to character data....
SQL Server provides the two digit year cutoff configuration option to change the cutoff year used by SQL Server. This allows for the consistent treatment of dates. We recommend specifying four-digit years.3 Input when you convert to datetime; output when you convert to character data....
SQL Server provides the two digit year cutoff configuration option to change the cutoff year used by SQL Server. This allows for the consistent treatment of dates. We recommend specifying four-digit years.3 Input when you convert to datetime; output when you convert to character data....
3 Input when you convert to datetime; output when you convert to character data.4 Designed for XML use. For conversion from datetime or smalldatetime to character data, see the previous table for the output format.5 Hijri is a calendar system with several variations. SQL Server uses the ...
SQL Server provides the two digit year cutoff configuration option to change the cutoff year used by SQL Server. This allows for the consistent treatment of dates. We recommend specifying four-digit years.3 Input when you convert to datetime; output when you convert to character data....
SQL Server provides the two digit year cutoff configuration option to change the cutoff year used by SQL Server. This allows for the consistent treatment of dates. We recommend specifying four-digit years.3 Input when you convert to datetime; output when you convert to character data....