Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
701 views
in Technique[技术] by (71.8m points)

mysql - Multiple insert statements in single ODBC ExecuteNonQuery (C#)

I'm inserting multiple rows into a DB, and joining them together in an attempt to improve performance. I get an ODBCException telling me my SQL syntax is wrong. But when I try it in the mysql commandline client, it works just fine.. I ran a simplified test to describe the process.

Command Line Client:


mysql> create table test (`id` int, `name` text);
Query OK, 0 rows affected (0.05 sec)

mysql> INSERT INTO test(id, name) VALUES ('1', 'Foo');INSERT INTO test(id, name) VALUES ('2', 'bar');
Query OK, 1 row affected (0.00 sec)

Query OK, 1 row affected (0.00 sec)

mysql>

After that I ran this code on the same DB:


comm.CommandText = "INSERT INTO test(id, name) VALUES ('1', 'Foo');INSERT INTO test(id, name) VALUES ('2', 'bar');";
comm.ExecuteNonQuery();

which gives me the following error:


+       base    {"ERROR [42000] [MySQL][ODBC 5.1 Driver][mysqld-5.1.51-community]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INSERT INTO test(id, name) VALUES ('2', 'bar')' at line 1"} System.Data.Common.DbException {System.Data.Odbc.OdbcException}

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

Batching is actually supported by MySQL ODBC driver v5+, you just need to click on the Details button of the ODBC control panel (if on Windows) and check the "Allow multiple statements" checkbox.

Alternatively, uses OPTIONS=67108864 on you odbc connection string.

More information here : http://dev.mysql.com/doc/refman/5.0/en/connector-odbc-configuration-connection-parameters.html


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...