FETCH NEXT FROM contact_cursor INTO @LastName, @FirstName; -- Check @@FETCH_STATUS to see if there are any more rows to fetch. WHILE @@FETCH_STATUS = 0 BEGIN -- Concatenate and display the current values in the variables. PRINT 'Contact Name: ' + @FirstName + ' ' + @LastName...
打开游标(Open Cursor) 提取游标(Fetch Cursor) 关闭游标(Close Cursor) 释放游标(Deallocate Cursor) 使用游标的过程如下: 注:图片来源 https://www.sqlservertutorial.net/sql-server-stored-procedures/sql-server-cursor/ 1.4 基本语法 ①完整的声明游标 DECLARE cursor_name CURSOR [ LOCAL | GLOBAL ] [ FORWAR...
OPEN MyCursor FETCH NEXT FROM MyCursor INTO @BatchID WHILE @@FETCH_STATUS = 0 BEGIN FETCH NEXT FROM MyCursor INTO @BatchID IF @@FETCH_STATUS = 0 BEGIN ... END END CLOSE MyCursor DEALLOCATE MyCursor It seems to me that checking @@FETCH_STATUS twice in a row without any c...
游标一般格式: DECLARE 游标名称 CURSOR FOR SELECT 字段1,字段2,字段3,... FROM 表名 WHERE ... OPEN 游标名称 FETCH NEXT FROM 游标名称 INTO 变量名1,变量名2,变量名3,... WHILE @@FETCH_STATUS=0 BEGIN SQL语句执行过程... ... FETCH NEXT FROM 游标名称 INTO 变量名1,变量名2,变量名3,... ...
Applies to: SQL ServerFetches a buffer of one or more rows from the database. The group of rows in this buffer is called the cursor's fetch buffer. sp_cursorfetch is invoked by specifying ID = 7 in a tabular data stream (TDS) packet.Transact...
The fields in which SQLFetch or SQLFetchScroll returns the length/indicator for a column follows the buffer for that column and precedes the buffer for the next column. These fields are optional. When the application requests a new rowset, the cursor li...
SQL DECLAREEmployee_CursorCURSORFORSELECTBusinessEntityID, JobTitleFROMAdventureWorks2022.HumanResources.Employee; OPEN Employee_Cursor; FETCH NEXT FROM Employee_Cursor; WHILE @@FETCH_STATUS = 0BEGINFETCHNEXTFROMEmployee_Cursor;END; CLOSE Employee_Cursor;DEALLOCATEEmployee_Cursor; GO ...
问cursor - FETCH next from不是MySQL游标中循环中此位置的有效输入。EN存储过程（Stored Procedure）是...
The default cursor type is a dynamic cursor which means that SQL Server evaluates the condition for every FETCH which is not good for performance and also can have some confusing effects if you modify data in the cursor loop. With a static cursor, SQL Server copies the result set into tempd...
FETCH [[NEXT] FROM] cursor_name INTO var_name [, var_name] ... This statement fetches the next row for the SELECT statement associated with the specified cursor (which must be open), and advances the cursor pointer. If a row exists, the fetched columns are stored in the named variables...