sql server audit table changes

I. Clustered IndexThe page level of the clustered index includes the index key and data page. Therefore, the answer to what the leaf level of the clustered index stores besides the key value is everything, that is, all fields in each row are in the leaf level.Another talk is that data itself is part of the clustered index, which maintains the Data Order in the table based on the key value.In SQL

I. Clustered Index The page level of the clustered index includes the index key and data page. Therefore, the answer to what the leaf level of the clustered index stores besides the key value is everything, that is, all fields in each row are in the leaf level.Another talk is that data itself is part of the clustered index, which maintains the Data Order in the table based on the key value.In SQL

Table expressionTable expressions do not have any physical instantiation, they are virtual when querying table expressions, internal queries are non-nested, in other words, external queries and internal queries are merged directly into a query of an underlying object, and the benefits of using table expressions are often related to the logical aspects of the code

Label:Original: SQL Server recovers table-level dataIn recent days, the company's technical maintenance staff frequently let me recover the database, because they are always missing the where condition, resulting in update, delete has unrecoverable consequences, plus those libraries are dozens of G. It takes about more than 10 minutes to recover. To this end, to

All information about the SQL Server database is stored in its system table. I wonder if you have spent more time checking the system tables because you are always busy with user forms. However, you may need to do something unusual occasionally, such as all the triggers in the database. You can check the table one by o

number, length from syscolumns where id = object_id (' db_table1 ') Use Db_sqlserver;goalter table db_table1 drop column e-mail select Name field name, Xusertype type number, length from syscolumns where id = object_id (' Db_table1 ')16: Delete Database tables[SQL]View Plaincopyprint? Use Db_sqlserver; Go Drop Table Db_table1 Drop

When a trigger is encountered, the other three columns used to identify the trigger type are deltrig, instrig, and uptrig. You can use the following command to list all objects of interest: Select * From sysobjects where xtype = In special cases, when the parent table has a trigger, you may want to use the following code to find the database: SelectSys2. [name] tablename,Sys1. [name] triggername,CaseWhen sys1.deltrig> 0 then 'delete'When sys1.instr

A pivot table is a method for analyzing data. It contains a powerful data pivot function in Excel. What is data pivoting? It may be easier to give an example. Assume there is a data table: Sales volume of books ---------------------------------------- Wang Excel teaching material 10 Xiao Li Excel teaching material 15 Wang Word teaching material 8 Xiao Li Excel teaching material 7 John Excel teaching materia

in loss of some data.2. DBCC checktableIf the DBCC CHECKDB check still has errors, you can use DBCC CHECKTABLE to fix them.Use the name of the database entity that needs to be repairedDECLARE @dbname varchar (255)Set @dbname = ' Name of the database entity to be repaired 'exec sp_dboption @dbname, ' Single user ', ' true 'DBCC CHECKTABLE (' name of the data table to be repaired ', repair_allow_data_loss)DBCC CHECKTABLE (' name of the data

How can I determine whether an SQL Server table exists? If I need to know whether a table exists in the SQL database, what should I do? The following describes how to determine whether an SQL