Runstarts normal execution of the unit test, and displays the results in the Results tab. (Before you click Run, you can specify the database user for the run operation by selecting a database connection on the
Selection(选择): A select operation selects a subset of rows (records) in a table (relation) that satisfy a selection condition. The ability to select rows from out of complete result set is called Selection. It involves conditional filtering and data staging. The subset can range from no r...
(Before you click Run, you can specify the database user for the run operation by selecting a database connection on the right.) Edit (pencil icon) enables you to edit the unit test specification. (If you cannot modify the unit test, lick the Edit icon.) Commit Changes saves any ...
If the value supplied isn't numeric, or doesn't fall into that range, sqlcmd generates an error message. A value of 0 specifies time-out to be infinite.-EUses a trusted connection instead of using a user name and password to sign in to SQL Server. By default, without -E specified,...
When the underlying tables are subject to significant inserts, updates, and deletes, be very careful in selecting the indexes (both table and view) that will provide the greatest coverage across your queries for the lowest cost. Typically, environments that are best suited for indexed views are...
Select a filegroup from the list of Filegroups associated with the selected File type above. Selecting a different filegroup changes the selections in the other fields accordingly. File name Select a file from the list of available files of the selected filegroup and file type. Location Displays ...
selecting the column values by statistically sampling the rows or by performing a full scan of all rows in the table or view. If the histogram is created from a sampled set of rows, the stored totals for number of rows and number of distinct values are estimates and don't need to be ...
An execution plan is a definition that sequences the source tables to access and the methods used to extract data from each table. Optimization is the process of selecting one execution plan from potentially many possible plans. Each possible execution plan has an associated cost...
To avoid these problems, the WAIT_AT_LOW_PRIORITY option allows you to manage the behavior of S or Sch-M locks required for an online index operation to start and complete, selecting from three options. In all cases, if during the wait time specified by MAX_DURATION = n [minutes] there...
To avoid these problems, the WAIT_AT_LOW_PRIORITY option allows you to manage the behavior of S or Sch-M locks required for an online index operation to start and complete, selecting from three options. In all cases, if during the wait time specified by MAX_DURATION = n [minutes] there...