Question

我在一个文件中有一个mysql脚本，我需要能够从我的c＃应用程序执行。以下是脚本包含的示例：

USE osae;

-- Set DB version 
CALL osae_sp_object_property_set('SYSTEM', 'DB Version', '0.3.5', '', '');
CALL osae_sp_object_property_set('SYSTEM', 'Debug', 'FALSE', '', '');
CALL osae_sp_object_type_property_add ('Prune Logs','Boolean','TRUE','SYSTEM',0);
CALL osae_sp_object_property_set ('SYSTEM','Prune Logs','TRUE','','');

DELIMITER $$

DROP PROCEDURE IF EXISTS osae_sp_object_event_script_update$$
CREATE DEFINER = 'root'@'localhost'
PROCEDURE osae_sp_object_event_script_update(IN pobject varchar(200), IN pevent varchar(200), IN ptext text)
BEGIN
DECLARE vObjectCount INT;
DECLARE vObjectID INT;
DECLARE vObjectTypeID INT;
DECLARE vEventCount INT;
DECLARE vEventID INT;
    SELECT COUNT(object_id) INTO vObjectCount FROM osae_object WHERE UPPER(object_name)=UPPER(pobject);
    IF vObjectCount > 0 THEN
              SELECT object_id,object_type_id INTO vObjectID,vObjectTypeID FROM osae_object WHERE UPPER(object_name)=UPPER(pobject);
        SELECT COUNT(event_id) INTO vEventCount FROM osae_object_type_event WHERE object_type_id=vObjectTypeID AND (UPPER(event_name)=UPPER(pevent) OR UPPER(event_label)=UPPER(pevent));
        IF vEventCount = 1 THEN     
            SELECT event_id INTO vEventID FROM osae_object_type_event WHERE object_type_id=vObjectTypeID AND (UPPER(event_name)=UPPER(pevent) OR UPPER(event_label)=UPPER(pevent));
            UPDATE osae_object_event_script SET event_script=ptext WHERE object_id=vObjectID AND event_id=vEventID;
         -- CALL osae_sp_debug_log_add(CONCAT('Updated ',vObjectID,' - ',vEventID,ptext),'');  
        END IF;
    END IF; 
END
$$

DELIMITER ;

正如您所看到的那样，它有多种行混合调用存储过程，还有一些drop和create语句来更新其他存储过程。

我尝试过两种不同的方法来执行脚本，但都失败了：

MySqlScript script = new MySqlScript(connection, File.ReadAllText("script.sql"));
script.Execute();

抛出异常：索引超出了数组的范围。

MySqlCommand upgCommand = new MySqlCommand();
upgCommand.Connection = connection;
upgCommand.CommandText = File.ReadAllText("script.sql");
upgCommand.ExecuteNonQuery();

这引发了一个异常，即我的sql语法中存在错误。

当我在dbForge Studio中手动运行整个脚本时，它会完美执行。如何从我的C＃app

中正确执行此脚本

Answer 1

看看here。您应该为MySqlScript指定一个分隔符（因为那里有存储过程）。您的查询应如下所示：

-- Set DB version 
CALL osae_sp_object_property_set('SYSTEM', 'DB Version', '0.3.5', '', '')$$
CALL osae_sp_object_property_set('SYSTEM', 'Debug', 'FALSE', '', '')$$
CALL osae_sp_object_type_property_add ('Prune Logs','Boolean','TRUE','SYSTEM',0)$$
CALL osae_sp_object_property_set ('SYSTEM','Prune Logs','TRUE','','')$$



DROP PROCEDURE IF EXISTS osae_sp_object_event_script_update$$
CREATE DEFINER = 'root'@'localhost'
PROCEDURE osae_sp_object_event_script_update(IN pobject varchar(200), IN pevent varchar(200), IN ptext text)
BEGIN
DECLARE vObjectCount INT;
DECLARE vObjectID INT;
DECLARE vObjectTypeID INT;
DECLARE vEventCount INT;
DECLARE vEventID INT;
    SELECT COUNT(object_id) INTO vObjectCount FROM osae_object WHERE UPPER(object_name)=UPPER(pobject);
    IF vObjectCount > 0 THEN
              SELECT object_id,object_type_id INTO vObjectID,vObjectTypeID FROM osae_object WHERE UPPER(object_name)=UPPER(pobject);
        SELECT COUNT(event_id) INTO vEventCount FROM osae_object_type_event WHERE object_type_id=vObjectTypeID AND (UPPER(event_name)=UPPER(pevent) OR UPPER(event_label)=UPPER(pevent));
        IF vEventCount = 1 THEN     
            SELECT event_id INTO vEventID FROM osae_object_type_event WHERE object_type_id=vObjectTypeID AND (UPPER(event_name)=UPPER(pevent) OR UPPER(event_label)=UPPER(pevent));
            UPDATE osae_object_event_script SET event_script=ptext WHERE object_id=vObjectID AND event_id=vEventID;
         -- CALL osae_sp_debug_log_add(CONCAT('Updated ',vObjectID,' - ',vEventID,ptext),'');  
        END IF;
    END IF; 
END
$$

然后你的代码：

MySqlScript script = new MySqlScript(connection, File.ReadAllText("script.sql"));
script.Delimiter = "$$";
script.Execute();

Answer 2

您可以运行单独的Process来执行脚本。例如：

Process.Start("mysql < script.sql");

根据您的环境，您可能需要稍微使用它来包含mysql可执行文件或sql脚本的路径。

Answer 3

如果将sql脚本放在存储过程中怎么办？如果您仍然希望使用这种方式将sql文件作为文件附加到应用程序资源（文件.resx），并执行它：

MySql.Data.MySqlClient.MySqlCommand cmdMySQL = newMySqlConnection.CreateCommand();
cmdMySQL.CommandText = (System.String)globalResource.your_file_name;

Answer 4

我不是100％确定原生MySql语法是什么，但是当我们为Sql Server执行类似的功能时，我们必须根据仅使用的文字值（GO）将sql文件分成块由查询执行程序（Sql Server管理控制台）。

我怀疑上面的请求中可能嵌入了类似的信息，例如DEFINE语句。

确切知道MySql所抱怨的内容将有助于改进解决方案。

如何在我的c＃应用程序中执行* .sql mysql文件

4 个答案: