sql server data masking

When the foreign key constraint is added to an existing column in the table, the SQL Server 2005 database engine checks the existing data in the column by default, to ensure that all values except null exist in the referenced primary key or unique constraint column. However, by specifying with nocheck, the database engine can not check column

the same as the file generated during export. Otherwise, the copy fails. By default, the imported file is a tab-separated file, the files generated by DTs use a lot of quotation marks or parentheses to separate fields. Therefore, the text exported by DTs and the text exported by BCP cannot be universal, otherwise, the "unexpected EOF encountered in the BCP data file" error will occur. As follows: NullStart copying...Sqlstate = s1000, nativeerror = 0E

name to import)-> determine Restore backup Set-> database-complete Finally press the OK button. The full database import succeeded. (If you restore a database on an existing SQL Server database, you may experience a failure to restore it if someone else is using it. You can go to see-> admin-> Current active-> lock/Object-> Find the process number of the database under lock-> into Query Analyzer kill the l

Label:Get the most complete data dictionary for SQL Server The following code is executed in Microsoft SQL Server 2013 by SELECTSysobjects.name astable name,--sys.extended_properties. [Value] As table description,Syscolumns.name asfield name,--Properties. [Value] As field d

1. Export and import data to a database in SQL Server 1. Select the database to be transferred in the SQL Server Enterprise Manager, right-click and choose all tasks> back up the database. 2. Select database for backup-complete, Target backup to press add Enter a custom back

Implementation of SQL Server native data from XML to generate JSON data instance code, xmljson Example code for generating JSON data from XML with SQL Server native

Only the SQL scripts of the database are exported, but the data in the table is still not exported. Next we will solve this problem for you. If you are interested, refer to the tutorial. Only the SQL scripts of the database are exported, but the data in the table is still not exported. Next we will solve this problem

Myth #21: Database corruption can be resolved by restarting SQL Server or Windows, or by attaching and detaching databases Error None of the operations in SQL Server can repair data corruption. Damaged pages need to be repaired or restored by some mechanism-but not by rest

In SQL Server, we sometimes need to obtain one of multiple duplicate data records. For more information, see the following statement. In SQL Server, we sometimes need to obtain one of multiple duplicate data records. For more inf

Agent history: distribution] [Clear distribution: distribution] [Copy proxy check] [Re-initialize a subscription with failed data verification] The SQL Server Enterprise Manager has a replication Monitor, which allows you to publish, distribute, and subscribe to the current machine. In SQL

use the stored procedure, instead of using SQL statements to reduce the overhead of the parser.Database ConnectionTo provide ACID (four features of transactions), SQL Server must ensure that all database changes are sequential. It uses locks to ensure that the insert, delete, or update operations of the database do not conflict with each other (for database lock

Today, a vendor asked me a question. If you want to change the data type of a field in a table, whether it is a field type in View also responds to automatic changes. At that time, I thought it would be changed automatically. However, the vendors said they had tried and won't change it. They asked me if I had any other choice but to try again. At that time, I thought of the storage process sp_refreshview for refreshing the View and asked them to give

1. Export SQL Server as Excel: To use T-SQL statements to export directly to the Excel worksheet, you have to borrow an extended stored procedure from the SQL Server Manager: xp_cmdshell, this process is used to execute a given command string in the form of an operating sys

Many friends asked SQL server database "generate scripts" and exported only the SQL scripts of the database, while the data in the table is still not exported. It is very simple. Take a look at the Tutorial: Note: I use SQLServer2008 here. Other versions should be similar. 1. Select the database to be exported-> task

100336 lines, we remember this number Another feature of statistics is that statistics are automatically created on query columns (non-indexed columns), as followsDuring query execution, a statistic named: _wa_sys_00000003_24e8431a is created automatically.This statistic is the statistic for the COL3 column, and you can find the number of rows that are greater than or equal to 2012-10-20. In SQL Server

Usage scenarios:For example, you need to query all student numbers with scores greater than 95, separated by commas into a string, from the Student score table.To prepare the test data:CREATE TABLE score (ID int,score int)INSERT into score values (1,90)INSERT into score values (2,96)INSERT into score values (3,99)It is now necessary to query the result string "2,,3" with a single statement.The SQL Server st

Bcp is a command line tool used in SQL Server to import and export data. It is based on DB-Library and can efficiently import and export large batches of data in parallel. Bcp can be used to export tables or views of a database, or filter tables or views using the select from statement to export them. When importing an

This course aims to achieveIn the SQL Server Enterprise ManagerData conversion Service (DTS) designerCreate an analysis services processing taskTo achieve automatic extraction, conversion, and filling of the data required by the Data Warehouse-------------------------------(For details, refer toCreate an analysis servi

My device Inserts 2000 data per second into the database, 2 devices total 4,000, when inserted directly in the program with INSERT statement, the two devices at the same time insert about about 2,800, data loss about 1200, testing a lot of methods, The solution of two kinds of obvious effect is put out: Method One: Use SQL S