SQL Server provides the@@FETCHSTATUSfunction that returns the status of the last cursorFETCHstatement executed against the cursor;If@@FETCHSTATUSreturns 0, meaning theFETCHstatement was successful. You can use theWHILEstatement to fetch all rows from the cursor as shown in the following code: WHIL...
Row fetched is missing. Examples This example uses @@FETCH_STATUS to control cursor activities in a WHILE loop. DECLARE Employee_Cursor CURSOR FOR SELECT LastName, FirstName FROM Northwind.dbo.Employees OPEN Employee_Cursor FETCH NEXT FROM Employee_Cursor WHILE @@FETCH_STATUS = 0 BEGIN FETCH NEX...
Defines the attributes of a Transact-SQL server cursor, such as its scrolling behavior and the query used to build the result set on which the cursor operates.
Actively look for patterns in the information Compare patterns with known examples Test pattern consistency Consider exceptions or special cases Use patterns to guide further investigation Progress Tracking Claude should maintain explicit awareness of: What has been established so far What remains to be ...
In SQL Server, if the cursor was created by setting a cursor variable to a cursor, cursor_name returns the name of the cursor variable. In previous releases, this output column returns a system-generated name. cursor_scope smallint 1 = LOCAL 2 = GLOBAL status smallint The s...
DECLARE CURSOR permissions default to any user that has SELECT permissions on the views, tables, and columns used in the cursor. Examples A. Using simple cursor and syntax The result set generated at the opening of this cursor includes all rows and all columns in the table. This cursor can...
After reading this article you will understand what a database cursor is, see an example, and understand when to use them in a stored procedure. All the examples for this lesson are based on Microsoft SQL Server Management Studio and the sample databases AdventureWorks and WideWorldImporters. ...
Say that you are creating a Next.js project, and that you want to create a certain feature, and it will provide instructions and code examples. 善用 Perplexity 搜索:利用 Perplexity 查找最新的 API 和设计方案。例如,当你开发 Next.js 项目时,直接说明你要实现 某个功能,然后让它提供详细的代码示例...
Keyset-driver or static cursors open asynchronously if the value for sp_configure cursor threshold exceeds 0, and the number of rows in the cursor result set exceeds the cursor threshold. Examples This example first declares a cursor, and then uses SELECT to display the value of @@CURSOR_ROWS...
If SQL Server is running in explicit or implicit transaction mode, then the locks are held until the transaction is either committed or rolled back. For example, the locking done for these two Transact-SQL examples is essentially the same: Copy /* Example 1 */ SET TRANSACTION ISOLATION ...