具有timestamp 数据类型。 使用当前的时间戳值。 可以为 Null。 使用 Null 值。 是计算列。 使用计算值。 当向标识列中插入显式值时,必须使用 column_list,并且表的 SET IDENTITY_INSERT 选项必须为 ON。 OUTPUT 子句 将插入行作为插入操作的一部分返回。 结果可返回到处理应用程序或插入到表或表变量中以供进...
对于使用 timestamp 数据类型定义的列,插入下一个时间戳值。 DEFAULT 对标识列无效。expression 一个常量、变量或表达式。 表达式不能包含 EXECUTE 语句。当引用 Unicode 字符数据类型 nchar、nvarchar 和 ntext 时,“expression”应采用大写字母“N”作为前缀。 如果未指定“N”,则 SQL Server 会将字符串转换为与...
The current timestamp value is used. Is nullable. A null value is used. Is a computed column. The calculated value is used. column_list must be used when explicit values are inserted into an identity column, and the SET IDENTITY_INSERT option must be ON for the table. OUTPUT Clause ...
The current timestamp value is used. Is nullable. A null value is used. Is a computed column. The calculated value is used. column_list must be used when explicit values are inserted into an identity column, and the SET IDENTITY_INSERT option must be ON for the table. OUTPUT Clause ...
The current timestamp value is used. Is nullable. A null value is used. Is a computed column. The calculated value is used. column_list must be used when explicit values are inserted into an identity column, and the SET IDENTITY_INSERT option must be ON for the table. OUTPUT Clause ...
Per una colonna definita con tipo di dati timestamp, viene inserito il valore timestamp successivo. DEFAULT non è un valore valido per una colonna Identity.expression Costante, variabile o espressione. L'espressione non può contenere un'istruzione EXECUTE....
Has a timestamp data type. The current timestamp value is used. Is nullable. A null value is used. Is a computed column. The calculated value is used.column_list must be used when explicit values are inserted into an identity column, and the SET IDENTITY_INSERT option must be ON for ...
set @column=''set @columndata=''fetch next from syscolumns_cursor into @name,@xtypewhile@@fetch_status<>-1beginif@@fetch_status<>-2beginif@xtype notin(189,34,35,99,98)--timestamp不需处理,image,text,ntext,sql_variant 暂时不处理 ...
if @xtype not in(189,34,35,99,98) --timestamp不需处理,image,text,ntext,sql_variant 暂时不处理 begin set @column=@column+case when len(@column)=0 then'' else ','end+@name set @columndata=@columndata+case when len(@columndata)=0 then '' else ','','','end ...
set@columndata=''fetchnextfromsyscolumns_cursorinto@name,@xtypewhile@@fetch_status<>-1beginif@@fetch_status<>-2beginif@xtypenotin(189,34,35,99,98)--timestamp不需处理,image,text,ntext,sql_variant 暂时不处理beginset@column=@column+casewhenlen(@column)=0then''else','end+@nameset@column...