你可以通过SqlServer Management Studio的UI界面操作来指定计算列,也可以通过Transact-SQL来指定计算列。 在Sql Server Management Studio中, 右键列 -》modify -》 新建列 -》Computed Column Specification 中来指定计算列。 通过Transact-SQL 来指定计算列,格式为:列名as表达式。 --在创建表的时候指定为计算列create...
IFEXISTS(SELECT*FROMsys.tablesWHEREname='computed_column_test_computed')BEGINDROPTABLEdbo.computed_column_test_computedENDIFEXISTS(SELECT*FROMsys.tablesWHEREname='computed_column_test_noncomputed')BEGINDROPTABLEdbo.computed_column_test_noncomputedENDCREATETABLEdbo.computed_column_test_computed ( dttmDATETIME...
SET QUOTED_IDENTIFIERmust beONwhen you are creating or changing indexes on computed columns or indexed views. For more information, seeSET QUOTED_IDENTIFIER (Transact-SQL). Ownership requirements All function references in the computed column must have the same owner as the table. ...
A computed column expression can use data from other columns to calculate a value for the column to which it belongs. You can specify an expression for a computed column in SQL Server by using SQL Server Management Studio (SSMS) or Transact-SQL (T-SQL)....
SET QUOTED_IDENTIFIERmust beONwhen you are creating or changing indexes on computed columns or indexed views. For more information, seeSET QUOTED_IDENTIFIER (Transact-SQL). Ownership requirements All function references in the computed column must have the same owner as the table. ...
The PERSISTED computed column uses the SOUNDEX function. In this scenario, if you run theDBCC CHECKDBcommand on the database, you may receive consistency errors for rows in the table. Resolution This issue is fixed i...
unless the column is markedPERSISTED. A computed column expression can use data from other columns to calculate a value for the column to which it belongs. You can specify an expression for a computed column in SQL Server by using SQL Server Management Studio (SSMS) or Transact-SQL (T-S...
unless the column is markedPERSISTED. A computed column expression can use data from other columns to calculate a value for the column to which it belongs. You can specify an expression for a computed column in SQL Server by using SQL Server Management Studio (SSMS) or Transact-SQL (T-SQL...
unless the column is markedPERSISTED. A computed column expression can use data from other columns to calculate a value for the column to which it belongs. You can specify an expression for a computed column in SQL Server by using SQL Server Management Studio (SSMS) or Transact-SQL (T-SQL...
问SQL Server Alter Computed ColumnEN最近准备给一个生产项目上oracle 11g DataGuard,主备均为oracle 11...