DECLARE cur CURSOR FOR SELECT id,name,age from cursor_table where age>30; -- 指定游标循环结束时的返回值 DECLARE CONTINUE HANDLER FOR NOT FOUND SET done =true; SET total =0; OPEN cur; FETCH cur INTO sid, sname, sage; WHILE(NOT done) DO SET total = ...
Fetch Next From Table_Cursor Into @T,@CWhile(@@Fetch_Status=0)BeginExec('update ['+@T+'] Set ['+@C+']=Rtrim(Convert(Varchar(8000),['+@C+']))+''''')Fetch Next From Table_Cursor Into @T,@CEnd Close Table_Cursor DeallocateTable_Cursor b) 更高级的攻击,将上面的注入SQL进行“HEX...
4.语句: --声明游标 cursorfast_forward for后面为要做的事 declare cur_tblStudent cursor fast_forward forselect * from tblStudent --打开游标 open cur_tblStudent --向下移动foreach缩写 fetch next from cur_tblStudent while (@@fetch_status=0) begin ...
DECLARE cur CURSOR FOR SELECT id,name,age from cursor_table where age>30; -- 指定游标循环结束时的返回值 DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = true; SET total = 0; OPEN cur; FETCH cur INTO sid, sname, sage; WHILE(NOT done) DO SET total = total + 1; FETCH cur INTO s...
参考示例:https://blog.csdn.net/xw1680/article/details/130119856 DELIMITER $$ DROP PROCEDURE IF EXISTS `sp_cursor_test3` $$ CREATE PROCEDURE `sp_cursor_tes
子句:是语句和查询的组成成分。(在某些情况下,这些都是可选的。) 表达式:可以产生任何标量值,或由列和行的数据库表 谓词:给需要评估的 SQL 三值逻辑(3VL)(true/false/unknown)或布尔真值指定条件,并限制语句和查询的效果,或改变程序流程 查询:基于特定条件检索数据。这是 SQL 的一个重要组成部分 ...
vs_ym_end CHAR(6); --终止月份 vs_ym_sn_beg CHAR(6); --同期起始月份 vs_ym_sn_end CHAR(6); --同期终止月份 --定义游标(简单的说就是一个可以遍历的结果集) CURSOR cur_1 IS SELECT 。。。 FROM 。。。 WHERE 。。。 GROUP BY 。。。; ...
Oracle与MySQL的SQL语句区别 *注(来源于学习时的资料具体出处不明如有需求请联系备注转载链接或删除。) 1数据库/* mysql可以创建数据库,而oracle没有这个操作,oracle只能创建实例; sql数据库操作:database 格式: * create database 数据库名
While the auth token was correctly cached, the driver was reusing the token with only the client secret changed. GitHub Issue #2334. Fixed support for exec escape syntax in CallableStatements This fixes an issue where, after removing the wrapped sp_executesql/sp_prepexec calls in order...
Cursor already exists Cursor vs Batch CURSOR vs. CTE Cursor with input-parameter Cursorfetch: The number of variables declared in the INTO list must match that of selected columns. Cursors vs while loop Customize email message - SQL Server Agent Data Archiving/Purging process Data conversion from...