在SQL*Plus中使用begin/end运行Oracle查询,可以通过以下步骤实现: 1. 打开SQL*Plus:在命令行中输入`sqlplus`,然后按回车键。 2. 输入用户名和密码:按照提示...
importmysql.connectordefexecute_transaction(sql_commands):conn=mysql.connector.connect(user='user',password='password',database='dbname')cursor=conn.cursor()try:cursor.execute("BEGIN;")forcommandinsql_commands:cursor.execute(command)cursor.execute("COMMIT;")exceptExceptionase:conn.rollback()print("Er...
lex->sql_command= SQLCOM_BEGIN; /* READ ONLY and READ WRITE are mutually exclusive. */ if (($3 & MYSQL_START_TRANS_OPT_READ_WRITE) && ($3 & MYSQL_START_TRANS_OPT_READ_ONLY)) { YYTHD->syntax_error(); MYSQL_YYABORT; } lex->start_transaction_opt= $3; } ; 上面是解析 START ...
lex->sql_command= SQLCOM_BEGIN; /* READ ONLY and READ WRITE are mutually exclusive. */ if (($3 & MYSQL_START_TRANS_OPT_READ_WRITE) && ($3 & MYSQL_START_TRANS_OPT_READ_ONLY)) { YYTHD->syntax_error(); MYSQL_YYABORT; } lex->start_transaction_opt= $3; } ; 1. 2. 3. 4. ...
lex->sql_command= SQLCOM_BEGIN; /* READ ONLY and READ WRITE are mutually exclusive. */ if (($3 & MYSQL_START_TRANS_OPT_READ_WRITE) && ($3 & MYSQL_START_TRANS_OPT_READ_ONLY)) { YYTHD->syntax_error(); MYSQL_YYABORT; }
lex->sql_command= SQLCOM_BEGIN; /* READ ONLY and READ WRITE are mutually exclusive. */ if (($3 & MYSQL_START_TRANS_OPT_READ_WRITE) && ($3 & MYSQL_START_TRANS_OPT_READ_ONLY)) { YYTHD->syntax_error(); MYSQL_YYABORT; }
; SqlCommand command =newSqlCommand(commandText, connection); connection.Open(); IAsyncResult result = command.BeginExecuteReader( CommandBehavior.CloseConnection);// Although it is not necessary, the following code// displays a counter in the console window, indicating that// the main ...
屬性CommandText 通常會指定具有有效 FOR XML 子句的 Transact-SQL 語句。 不過, CommandText 也可以指定語句來傳回 ntext 包含有效 XML 的數據。 一般BeginExecuteXmlReader 查詢的格式可以如下列 C# 範例所示: C# 複製 SqlCommand command = new SqlCommand("SELECT ContactID, FirstName, LastName FROM dbo.Conta...
下列範例會SqlConnection建立 和SqlTransaction。 它也會示範如何使用BeginTransaction、Commit和Rollback方法。 C# privatestaticvoidExecuteSqlTransaction(stringconnectionString){using(SqlConnection connection =newSqlConnection(connectionString)) { connection.Open(); SqlCommand command = connection.Creat...
When handling errors in SQL Server, SQL developers have several options for resolving issues that arise during query execution. Two commonly used methods are BEGIN TRY/BEGIN CATCH and GOTO. While both serve to manage and respond to errors, they do so in distinct ways. In this article, we’...