sql declare cursor

Label: The table1 structure is as follows2Idint 3Namevarchar( -) 4 5 Declare @id int 6 Declare @name varchar( -) 7 DeclareCursor1cursor for --Defining Cursors Cursor1 8 Select * fromTable1--objects using cursors (fill in select text as required) 9 OpenCursor1--Open Cursor Ten One Fetch Next fromCursor1 into @id,@name --move the

Declare Cr cursor for select doctitle, author from tbldocs -- sentence 1st Open cr -- sentence 2nd Declare @ doctitle varchar (50), @ author varchar (20) -- sentence 3rdFetch next from Cr into @ doctitle, @ author -- sentence 4thWhile @ fetch_status = 0 -- 5th sentenceBeginPrint @ doctitle + 'is written by' + @ author -- sentence 6thFetch next from Cr into @

--declaration variable declare @IMType varchar, @IMResourceID varchar (10)--Define cursor declare information_cursor cursor forselect [Imtype] , [Imresourceid] from [Bjyx]. [dbo]. [information]--opens the cursor open information_cursor--searches the row and stores the data i

example.Declare @ SQL varchar (8000 ),@ Rolename varchar (100)Set @ SQL =''Declare rolecursor cursor Select [role] From roledata -- data to be traversedOpen rolecursorFetch next from rolecursor into @ rolenameWhile @ fetch_status = 0BeginSet @ SQL = 'insert into roles (ro

Tags: example last not upd creat roc shift cursor when--Cursors DeclareCursor cursor nameIsQuery statement;Beginother statements;End --the properties of the cursor%found%notfound%isopen%rowcount (The pointer displacement amount of the current cursor) Two forms of--fetchFETCH cursor_name into var1, var2, ...;FETCH curso

SQL table variables differ from temporal tables + non-cursor temporary table traversalCategory: SQL Server2009-11-27 17:01 1196 People read Comments (2) favorite reports Sqlinsert Storage SQL ServermicrosoftstatisticsQuestion 1: Why do I introduce table variables when I already have a temporary table?Answer 1: tabl

LoopBighrc: = 3;Update sec_hrc_audit set hrc_code = bighrc where current of cursor_name;End loop;Commit; Cursor _ variable DeclareType RC is ref cursor return sec_hrc_audit % rowtype;Var1 RC;RT sec_hrc_audit % rowtype;Type REC is record (hrc_code number (4), hrc_name varchar2 (2 ));Type RC2 is ref cursor return REC;BeginOpen var1 for select * From sec_hrc_audit;

) (Figure2: All table information for all databases) Second, realize First, define a temporary table variable @tablespaceinfo the information used to hold the table, use the cursor to read the table name in Sys.tables, and then insert the relevant data from the sp_spaceused to the TEMP table variable @tablespaceinfo. The following is an implementation of the SQL script, as shown in Figure1: --SCRIPT1

SQL Server cursors use cursors! In relational databases, we think about queries in a set. The cursor breaks this rule and changes the way we think about it into a row-by-row approach. For C-like developers, this approach is more comfortable. The normal way of thinking for the set is: For the cursor: This is also SQL Se

. syslockinfoOther methods include SMO and DMO. For deadlocks, refer to the U Lock mentioned above. SQL Server has a deadlock monitor. If circular dependency is detected, select One of them as a victim (really poor ...), An error occurred while terminating the transaction. 3. cursor lockThe cursor type varies with the locking method.The static

column in the cursor result set, and the data type of each variable also matches the data type of the data column in the cursor. @ @FETCH_STATUS global variable returns the state of the last FETCH command executed. When you read data from a cursor every time you use fetch, you should examine the variable to determine whether the last fetch operation was success

Select * From DBO. Bank 1 Zhang San 100012 Li Si 100013. Wang Wu 100014 pediatric 10001 Declare @ bankid intdeclare @ username varchar (50) Declare @ rmbnum varchar (50) Declare cursor1 cursor for -- Define the cursor cursor1select * From DBO. bank ---- use the

-- Dynamic SQL and Dynamic Cursor declarecntnumber; beginexecuteimmediate -- Dynamic SQL and Dynamic Cursor declare cnt number; begin execute immediate -- Dynamic SQL and Dynamic CursorDeclareCnt number;BeginExecute immediate

SQL Server cursor statement usage:Copy codeThe Code is as follows:-- Declare a cursorDECLARE MyCursor CURSORFor select top 5 FBookName, FBookCoding FROM TBookInfo // defines a cursor called MyCursor, which stores data after select-- Open a cursorOPEN MyCursor // OPEN This dataset-- Loop a cursorDECLARE @ BookName nvarc

Here we mainly compare the following three formats of cursor loops: 1. Single processing of open cursors; LOOPFETCH cursinto variables; EXITWHEN conditions; ENDLOOP; CLOSE game Here we mainly compare the following three formats of cursor loops: 1. Single processing of open cursors; loop fetch cursinto variables; exit when conditions; end loop; CLOSE games Here we mainly compare the

Copy Code code as follows: DECLARE @OldId varchar (50) DECLARE @CustomerID varchar (50) DECLARE my_cursor Cursor--Defining cursors For (select Customerid,oldid from Customer where area= ' BJ ')--Find the collection you want and put it in cursor OPEN My_cursor; --Ope

When an SQL statement is used, the Oracle server allocates a large block of memory to parse and execute SQL commands. This workspace is a cursor. When the execution part of a block contains an SQL statement, PL/SQL creates an implicit c