Erlang mysql example

Question

Just wondering if anyone could give a working example of using the erlang-mysql module (http://code.google.com/p/erlang-mysql-driver/).

I am new to erlang and I am tryin

Answer 1

After trying to use the ODBC module that comes with Erlang/OTP, and running into problems, I recommend the mysql/otp driver. I replaced ODBC with it in just a few hrs and it works fine.

They have good documentation so I will not add examples here.

Answer 2

This is described in the source code of mysql.erl:

Your result will be {data, MySQLRes}.

FieldInfo = mysql:get_result_field_info(MysqlRes), where FieldInfo is a list of {Table, Field, Length, Name} tuples.

AllRows = mysql:get_result_rows(MysqlRes), where AllRows is a list of lists, each representing a row.

Answer 3

you should check the count of rows, then execute:

eg: RowLen = erlang:length(Row), if RowLen > 0 -> {success}; true -> {failed, "Row is null"} end.