MS SQL SERVER 支持三种类型的游标:Transact_SQL 游标,API服务器游标和客户游标。 (1)Transact_SQL 游标 Transact_SQL 游标是由DECLARE CURSOR 语法定义、主要用在Transact_SQL脚本、存储过程和触发器中。Transact_SQL 游标主要用在服务器上,由从客户端发送给服务器的Transact_SQL 语句或是批处理、存储过程、触发器...
Problem In this article, we will explore how to use SQL Server scroll cursors to selectively pick a row from the cursor instead of looping through rows one by one. Solution ASQL Server cursoris T-SQL logic to loop through a finite number of rows which are determined by the query that is...
下面先给出一个客户端 USE语句的跟踪堆栈。 mysql> use mysql (gdb) bt #0 com_use (buffer=0x93c0c0 <glob_buffer>, line=0x9f5570 "use mysql") at /home/loushuai/src/mysql/hust-mysql/client/mysql.cc:4118 #1 0x000000000040c619 in read_and_execute (interactive=true) at /home/loushuai/s...
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USE `数据库名称`$$ CREATE PROCEDURE GetOfficeByCountry(IN countryName VARCHAR(255)) BEGIN SELECT * FROM offices WHERE country = countryName; END$$ DELIMITER ; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 在上面的sql中,countryName是存储过程的IN参数。在存储过程中,我们查询位于countryName参数...
As always thank you for your valuable time in helping out the newbies. Thank you a million times. Regards and we said... Basically, you will use a ref cursor, and you will build the query dynamically, the query will resemble: where (1=1 or :COLUMN_NAME1 is null) and ( column_name...
You can use a query hint within a cursor declaration. However, if you also use theFOR UPDATE OFclause, specifyOPTION (<query_hint>)afterFOR UPDATE OF. SQL Server implicitly converts the cursor to another type if clauses inselect_statementconflict with the functionality of the requested cursor...
Name: Namespace=SQL AREA(00) Type=CURSOR(00) Statistics: InvalidationCount=0 ExecutionCount=0 LoadCount=1 ActiveLocks=1 TotalLockCount=1 TotalPinCount=2 Counters: BrokenCount=1 RevocablePointer=1 KeepDependency=0 Version=0 BucketInUse=0 HandleInUse=0 HandleReferenceCount=0 ...
SQL USEAdventureWorks2022; GODECLARE@prep_handleINT, @cursorINT, @scrolloptINT=4104, @ccoptINT=8193, @rowcntINT; EXEC sp_cursorprepexec @prep_handle OUTPUT, @cursor OUTPUT, N'@fName nvarchar(100)', N'SELECTFirstName, LastNameFROMPerson.PersonWHEREFirstName = @fName', @scro...
This topic discusses the use of the SQLFetchScroll function in the cursor library. For general information about SQLFetchScroll, see SQLFetchScroll Function. The cursor library implements SQLFetchScroll by repeatedly calling SQLFetch in the driver. It transfers...