sql declare cursor

A SQL Server cursor and a loop nested stored procedure use case Preparation code --创建表CREATE TABLE everyoneAVG( ID int primary key identity(1,1), AccNo INT, AVGTime INT, AddTimes INT);DROP TABLE everyoneAVG;SELECT ID,AccNo AS ‘用户号‘,AVGTime/60 AS ‘平均充值时间间隔(小时)‘,AddTimes AS ‘总充值次数‘ FROM everyoneAVGORDER BY AVGTime/60 DESC;DELETE everyoneAVG;Functional RequirementsFind out the average recharg

Number Standard parcel Code (LANDCODE) Section Code (SECTCODE) 1 131001bg001 G001 2 131001bg002 G001 3 131001bg003 G001 4 131001bg004 G002 5 131001bg005 G003 Now you need to convert the data in the table to the results shown in the following table: Number Section coding Included Standard parcel 1 G001 131001bg001,131001bg002,131001bg003

-- Test declare @ sname varchar (20) Declare dd cursor for select sname from sopen DD. you need to determine whether the cursor exists select * from master. DBO. syscursors where cursor_name = 'dd' -- perform the following operations to check whether a cursor exists and chec

Cursors provide a flexible way to retrieve and operate data from tables. cursors are mainly used on servers to process SQL statements sent from clients to servers, or data processing requests in batch processing, stored procedures, and triggers. How can I use a cursor?First declare the cursor:

SQL Server trigger cursor note today receives a requirement to use a trigger to update other tables through conditions. I haven't touched SQLSERVER for a long time, and there is no SQLSERVER installation package in my computer. My colleague sent an installation package. I was shocked, 3.6 GB !!!! After a long wait, start the job. Requirements: 1. When field a is updated to 2 or 3, and field B is

Tags:beginusecourseend data creatproc read for Use NewTest1---Declaration view---CREATE VIEW newviewte as select Studentinfo.name as name, studentinfo.sex as gender, Course.name as course fr Om studentinfo join Course on studentinfo.cid= course.id---Call view select * FROM newviewte---declaration trigger---CREATE TRIGGER NewT RI on ClassInfo for insert as print ' data insert test ' go create trigger NewTri1 on ClassInfo for delete as print ' data delete test ' Go inser T into ClassInfo Values

Summary This article describes varous methods that you canUse to simulate a cursor-like fetch-Next logic in a stored procedure,Trigger, or transact-SQL batch. Use Transact-SQL statements to iterate through a result set There are three methods you can use to iterate through a result set by using Transact-SQL statement

The data block cursor example is as follows: Begindeclare @ item_code varchar (32) -- defines the variable declare @ item_name varchar (32) Declare @ invest_money_sum float -- defines the cursor declare my_cursor cursor forselect

[SQL] -- 1. Update the salary of each teacher to the original salary + bonus -- Defines two variables to store ttid and reward Declare @ TID intDeclare @ reward money -- 1. Create a cursor Based on the bonus table Declare cur_reward cursor fast_forward for select ttid

In (1), we will explain how to input a String array and an int array. Here, we will explain how to output a String array. After reading the Code, some friends may wonder: why do we need to transfer the String array? Is it difficult to transmit a cursor directly? Here we will briefly describe the original intention: The cursor can only be transmitted from the table, or, from the custom array, select as a

[SQL] --1. Update each teacher's salary to the original salary + bonus --defines two variables that are used to store ttid and reward DECLARE @tid int DECLARE @reward Money --1. Create a cursor based on the bonus table Declare cur_reward