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necessary to identify a large number of space-occupying objects, such as: tables or indexes, and then by archiving historical data, the space is released first.2. The master data file (primary files) cannot be emptied. There are auxiliary data files that can be completely emptied.3. If you want to empty a filegroup, delete the objects (tables or indexes) assigned to the filegroup, or move them to another filegroup, DBCC Shrinkfile will not do the work for you.After the deleted data and objects
.. sysdatabases d Where sid not in (select Sid from Master .. syslogins where name = 'sa ')OrSelect dbid, name as db_name from Master .. sysdatabases where Sid
14: query the fields and Data Types of a tableSelect column_name, data_type from information_schema.columnsWhere table_name = 'table name'
[N]. [title]:Select * From tablename order by customername
[N]. [title]:Select * From tablename order by customername
1. view the database versi
PHP connection to SQL Server database, the database is known as bs3000+_001_2011 this with the + number of the database, can not choose to enter the database??
Tags: des http io ar os for SP Strong onError:When click 'New Database Diagram', a error popped up and said 'attempted to read or write protected memory. This is often a indication that other memory is corrupt. (Microsoft.VisualStudio.OLE.Interop)"Related Link:https://social.msdn.microsoft.com/Forums/en-US/fa9df00f-49ba-4345-b036-423ae30a5d47/ problem-to-create-new-database-diagram-in-microsoft-
Tags: database access Microsoft database application Drive Server(content is organized from the MSDN Azure SQL Database topic section) similar to SQL Server, Azure
SQL server determines whether a database, table, column, or view exists. SQL server
1. Determine whether the database exists
If exists (select * from sys. databases where name = 'database
1. View the version of the database
SELECT @ @version
2. View the machine operating system parameters of the database
EXEC master.. xp_msver
3. View Database Startup Parameters
sp_configure
4. View Database Startup time
Select CONVERT (varchar, login_time,120) from master. sysprocesses where spid=1
To view the
SQL server calculates the value of a field in the database, removes duplicate data, and SQL server
Sometimes, some duplicate data exists in the database, but we want to calculate the value of a field, and we need to remove the dup
1. view the database version
Select @ version
2. view the operating system parameters of the machine where the database is locatedExec master .. xp_msver
3. view database startup parametersSp_configure
4. view the database startup timeSelect convert (varchar (30), login_time, 120) from Master .. sysprocesses where spi
SQLServer how to use the T-SQL command to query a database in which tables, convenient table operations, need friends can refer to the next
SQLServer how to use the T-SQL command to query a database in which tables, convenient table operations, need friends can refer to the next
1. query all tables in
Tags: Manage user name picture data source link Server Studio List C # databaseWhen involved in the old project data migration, the database structure has changed completely, and the old data needs to be treated with special fields, and the data is large, using Navicat to export a single table, a table data about more than 1 million, the direct export of SQL exec
1. query all tables in SQL:
Select TABLE_NAME FROM database name. INFORMATION_SCHEMA.TABLES Where TABLE_TYPE = 'base table' after execution, you can see the names of all tables created by yourself in the database.
2. query all tables and columns in SQL:
Select dbo. sysobjects. name as Table_name, dbo. syscolumns.
MySQL is a common repository server, and the cloud-based Azure SQL Database on Microsoft Azure is a powerful and affordable option, through this article, using the SQL Server migration Assistant, which is Here's a simple: SSMA) take a few simple steps to move your MySQL repo
very deep, that is, more and more practical problems, have to have theoretical knowledge to support,But it is often theoretically said that the situation does not appear frequently or even if there is no attention, there is time to neglect some theoretical knowledge.For the problems encountered, if you really want to find out, still have some theoretical knowledge to do the groundwork. Many times, often after encountering problems, recalled once good seems to have seen this aspect of theoretica
The previous configuration of the mirrored database has been completed and the failover test has been carried out. Next you will deploy the witness server for automatic failover.
First, about the witness server
1. To support automatic failover, you must configure the database mirroring session in high security mode a
1. Query all tables in sql:
Select table_name from database name. Information_schema. Tables Where table_type= ' BASE table ' is executed, you can see the names of all the tables in the database that belong to you
2. Query all tables and columns in sql:Select Dbo.sysobjects.name as TABLE_NAME, dbo.syscolumns.name as column_name from Dbo.syscolumns INNER JOIN
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