public static async void T_InsertAndSelect_TAP()
{
System.Diagnostics.Stopwatch stopW = new System.Diagnostics.Stopwatch();
stopW.Start();
await Task.Run(async() =>
{
var connStr = GetMySqlConnString();
var conn = new MySqlConnection(connStr);
conn.UseConnectionPool = true;
await conn.OpenAsync();
//------------------------------------------
//drop table if exist
{
string sql = "drop table if exists test001";
var cmd = new MySqlCommand(sql, conn);
await cmd.ExecuteNonQueryAsync();
}
//------------------------------------------
{
string sql = "create table test001(col_id int(10) unsigned not null auto_increment, col1 int(10)," +
"col2 char(2),col3 varchar(255),col4 datetime, primary key(col_id) )";
var cmd = new MySqlCommand(sql, conn);
await cmd.ExecuteNonQueryAsync();
}
//---------------------------------------------
for (int i = 0; i < 100; ++i)
{
string sql = "insert into test001(col1,col2,col3,col4) values(10,'AA','123456789','0001-01-01')";
var cmd = new MySqlCommand(sql, conn);
await cmd.ExecuteNonQueryAsync();
}
{
//test prepared statement
string sql = "insert into test001(col1,col2,col3,col4) values(?col1,?col2,?col3,?col4)";
var cmd = new MySqlCommand(sql, conn);
await cmd.PrepareAsync(); //prepare
CommandParams pars = cmd.Parameters;
for (int i = 0; i < 100; ++i)
{
pars.AddWithValue("?col1", 1000 + i);
pars.AddWithValue("?col2", "AA");
pars.AddWithValue("?col3", "how are you" + i);
pars.AddWithValue("?col4", DateTime.Now);
await cmd.ExecuteNonQueryAsync();
pars.Clear();
}
await cmd.ClosePrepareAsync();
}
//--------------------------------------------
//select back
{
string sql = "select * from test001";
var cmd = new MySqlCommand(sql, conn);
#if DEBUG
conn.dbugPleaseBreak = true;
#endif
int count = 0;
await cmd.ExecuteReaderAsync(reader =>
{
count++;
//if (count > 10)
//{
// //test stop reader
//reader.Stop();
//}
});
}
});
//--------------------------------------------
stopW.Stop();
Report.WriteLine("avg:" + stopW.ElapsedTicks);
}