deallocate [ Global ] cursor_name | cursor_variable_name --释放游标 deallocate orderNum_03_cursor 使用实例: USE Test_DB; DECLARE @jid CHAR(5) DECLARE @pic NVARCHAR(64) DECLARE My_Cursor CURSOR --定义游标 FOR (SELECT jid FROM journal WHERE isall in(1,2)) --查出需要的集合放到游标中 OP...
SQL is a set-based language, meaning operations are completed on all or rows of the result. However, there are times, when you want to do operation on a row by row basis. This is where cursors come in to play. What is a Database Cursor?
84. What is TRUE about %ROWCOUNT in PL/SQL Cursor? A SELECT INTO statement or DML statements like INSERT, DELETE, AND UPDATE do not result in any rows being affected. Results are returned for DML statements such as inserting, deleting, and updating records, or for those returned by a SEL...
.pdb files in production environment? 'An operation was attempted on a nonexistent network connection' error 'bootstrap' is not a valid script name. The name must end in '.js'. 'Cannot implicitly convert 'System.TimeSpan' to 'System.DateTime' 'DayOfWeek' is not supported in LINQ to Entit...
ACE.OLEDB.12.0' provider not working in 64 bit Windows 10 and office 2016 'Oracle Provider for OLE DB' is missing " failed because truncation occurred, and the truncation row disposition "Could not bulk load because SSIS file mapping object 'Global\DTSQLIMPORT' could not be opened. Operating...
Rowset functions Return an object that can be used like table references in a SQL statement. Scalar functions Operate on a single value and then return a single value. Scalar functions can be used wherever an expression is valid. Categories of scalar functions Expand table Function categoryDescr...
I have written a query that is a bit involved, it is multi-line and it contains a union and a call to lookup. It works well as a query, but if I save it as a...
I have value in each cell. I want to add comma at the end for example Structured QUery Language, Science, Social. So I can count each cell value with the help of comma. How to add ...
There is a new refactoring that detects variable swaps and suggests using a tuple to swap values instead of using a temporary variable in-order to swap arguments. Place your cursor on a temporary variable assignment where you are swapping values. Press (Ctrl+.) to trigger the Quick Actions an...
Visual Studio has evolved as well. Remember when Web developers basically had to install a full server as a developer rig just to have IIS and SQL Server to run their sites? Then we were introduced to the more lightweight world of Cassini, and then IIS Express. Now HTML5 is here and ...