• <small id='w7YWu'></small><noframes id='w7YWu'>

      <bdo id='w7YWu'></bdo><ul id='w7YWu'></ul>
  • <i id='w7YWu'><tr id='w7YWu'><dt id='w7YWu'><q id='w7YWu'><span id='w7YWu'><b id='w7YWu'><form id='w7YWu'><ins id='w7YWu'></ins><ul id='w7YWu'></ul><sub id='w7YWu'></sub></form><legend id='w7YWu'></legend><bdo id='w7YWu'><pre id='w7YWu'><center id='w7YWu'></center></pre></bdo></b><th id='w7YWu'></th></span></q></dt></tr></i><div id='w7YWu'><tfoot id='w7YWu'></tfoot><dl id='w7YWu'><fieldset id='w7YWu'></fieldset></dl></div>
    1. <tfoot id='w7YWu'></tfoot>
      <legend id='w7YWu'><style id='w7YWu'><dir id='w7YWu'><q id='w7YWu'></q></dir></style></legend>

        MySQL 将 EXECUTE 的结果保存在变量中?

        MySQL save results of EXECUTE in a variable?(MySQL 将 EXECUTE 的结果保存在变量中?)
          <legend id='jVqYI'><style id='jVqYI'><dir id='jVqYI'><q id='jVqYI'></q></dir></style></legend>

              <bdo id='jVqYI'></bdo><ul id='jVqYI'></ul>
                <tbody id='jVqYI'></tbody>
            • <small id='jVqYI'></small><noframes id='jVqYI'>

                1. <i id='jVqYI'><tr id='jVqYI'><dt id='jVqYI'><q id='jVqYI'><span id='jVqYI'><b id='jVqYI'><form id='jVqYI'><ins id='jVqYI'></ins><ul id='jVqYI'></ul><sub id='jVqYI'></sub></form><legend id='jVqYI'></legend><bdo id='jVqYI'><pre id='jVqYI'><center id='jVqYI'></center></pre></bdo></b><th id='jVqYI'></th></span></q></dt></tr></i><div id='jVqYI'><tfoot id='jVqYI'></tfoot><dl id='jVqYI'><fieldset id='jVqYI'></fieldset></dl></div>
                  <tfoot id='jVqYI'></tfoot>
                  本文介绍了MySQL 将 EXECUTE 的结果保存在变量中?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  如何将 EXECUTE 语句的结果保存到变量中?类似的东西

                  How do I save the results of EXECUTE statement to a variable? Something like

                  SET a = (EXECUTE stmtl);
                  

                  推荐答案

                  如果你想用准备好的语句来做到这一点,那么你需要在原始语句声明中包含变量赋值.

                  If you want to do this with a prepared statement, then you need to include the variable assignment in the original statement declaration.

                  如果您想使用存储的例程,那就更容易了.可以将存储函数的返回值直接赋值给变量,存储过程支持输出参数.

                  If you want to use a stored routine it's easier. You can assign the return value of a stored function directly to a variable, and stored procedures support out parameters.

                  示例:

                  准备好的声明:

                  PREPARE square_stmt from 'select pow(?,2) into @outvar';
                  set @invar = 1;
                  execute square_stmt using @invar;
                  select @outvar;
                  +---------+
                  | @outvar |
                  +---------+
                  |       1 |
                  +---------+
                  DEALLOCATE PREPARE square_stmt;
                  

                  存储函数:

                  delimiter $$
                  create function square_func(p_input int) returns int
                  begin
                    return pow(p_input,2);
                  end $$
                  delimiter ;
                  
                  set @outvar = square_func(2);
                  select @outvar;
                  +---------+
                  | @outvar |
                  +---------+
                  |       4 |
                  +---------+
                  

                  存储过程:

                  delimiter $$
                  create procedure square_proc(p_input int, p_output int)
                  begin
                    set p_output = pow(p_input,2);
                  end $$
                  delimiter ;
                  
                  set @outvar = square_func(3);
                  call square_proc(2,@outvar);
                  select @outvar;
                  +---------+
                  | @outvar |
                  +---------+
                  |       9 |
                  +---------+
                  

                  这篇关于MySQL 将 EXECUTE 的结果保存在变量中?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

                  本站部分内容来源互联网,如果有图片或者内容侵犯了您的权益,请联系我们,我们会在确认后第一时间进行删除!

                  相关文档推荐

                  Accessing another user#39;s table within an Oracle Stored Procedure(在 Oracle 存储过程中访问另一个用户的表)
                  How to View Oracle Stored Procedure using SQLPlus?(如何使用 SQLPlus 查看 Oracle 存储过程?)
                  How to Pass Java List of Objects to Oracle Stored Procedure Using MyBatis?(如何使用 MyBatis 将 Java 对象列表传递给 Oracle 存储过程?)
                  Set the variable result, from query(设置变量结果,来自查询)
                  What is dynamic SQL?(什么是动态 SQL?)
                  Mysql - How to quit/exit from stored procedure(Mysql - 如何退出/退出存储过程)
                    <bdo id='Tgh3y'></bdo><ul id='Tgh3y'></ul>
                    • <i id='Tgh3y'><tr id='Tgh3y'><dt id='Tgh3y'><q id='Tgh3y'><span id='Tgh3y'><b id='Tgh3y'><form id='Tgh3y'><ins id='Tgh3y'></ins><ul id='Tgh3y'></ul><sub id='Tgh3y'></sub></form><legend id='Tgh3y'></legend><bdo id='Tgh3y'><pre id='Tgh3y'><center id='Tgh3y'></center></pre></bdo></b><th id='Tgh3y'></th></span></q></dt></tr></i><div id='Tgh3y'><tfoot id='Tgh3y'></tfoot><dl id='Tgh3y'><fieldset id='Tgh3y'></fieldset></dl></div>

                    • <small id='Tgh3y'></small><noframes id='Tgh3y'>

                      <legend id='Tgh3y'><style id='Tgh3y'><dir id='Tgh3y'><q id='Tgh3y'></q></dir></style></legend>
                          <tbody id='Tgh3y'></tbody>
                        <tfoot id='Tgh3y'></tfoot>